Malware

Security Advisory

Chrome V8 Type Confusion Vulnerability Actively Exploited In The Wild 

Summary : Security advisory: Google has released an urgent security update to patch two high-severity Type Confusion vulnerabilities in the V8 JavaScript engine. The CVEs vulnerabilities are CVE-2025-13223, CVE-2025-13224 .

OEM Google 
Severity High 
CVSS Score 8.8 
CVEs CVE-2025-13223, CVE-2025-13224 
POC Available No 
Actively Exploited Yes 
Exploited in Wild Yes 
Advisory Version 1.0 

Overview 

One of these vulnerability (CVE-2025-13223) is already being actively exploited in the wild, allowing attackers to potentially execute arbitrary code through malicious web content. which attackers can bypass Chrome’s sandbox, steal sensitive data, or deploy malware. The fixes have been rolled out for Chrome Stable 142.0.7444.175/.176 across Windows, Mac, and Linux. 

Vulnerability Name CVE ID Product Affected Severity Fixed Version 
​Type Confusion Vulnerability in V8 JavaScript Engine CVE-2025-13223 Google Chrome High v142.0.7444.175 / v142.0.7444.176 
Type Confusion Vulnerability in V8 JavaScript Engine CVE-2025-13224 Google Chrome High v142.0.7444.175 / v142.0.7444.176 

Technical Summary 

Both vulnerabilities occur from Type Confusion vulnerabilities in Chrome’s V8 engine, where incorrect data-type handling leads to memory corruption and possible code execution. The CVE-2025-13223 is already being exploited in the wild and may involve APT-driven activity.

Another vulnerability was found internally through Google’s Big Sleep fuzzing system as part of ongoing proactive defense.

These weaknesses can allow attackers to bypass browser security boundaries and execute malicious actions remotely. Urgent need for users and administrators to apply Chrome’s latest security updates immediately. 

CVE ID System Affected  Vulnerability Details Impact 
CVE-2025-13223 Google Chrome (V8 Engine) Type confusion due to improper type handling in V8 allowing memory corruption.  Remote Code Execution, Sandbox Escape 
CVE-2025-13224 Google Chrome (V8 Engine) Type confusion triggered during script execution, discovered via fuzzing Remote Code Execution, Browser Crash 

Remediation: 

  • Immediate Action: Users and organization administrators should update Chrome immediately to the following patched versions: 
  • Windows: 142.0.7444.175 / 142.0.7444.176 
  • MacOS: 142.0.7444.176 
  • Linux: 142.0.7444.175 

Here are some recommendations below 

  • Enforce Chrome auto-updates on all endpoints via enterprise policies. 
  • Monitor browser crash logs and unusual behaviors tied to JavaScript execution. 
  • Run updated vulnerability & patch management tools to ensure full endpoint compliance. 
  • Educate users to avoid suspicious links and unknown websites during active exploitation events 

Conclusion: 
With Chrome being the most widely used browser globally, prompt updates are essential for the new security vulnerabilities. Maintaining browsers at the latest versions remains the strongest defenses against modern web-based attacks in modern cyber world. 

References: 

Security Advisory

TP-Link Security Update, Omada Gateway Exploits Fixed in October Release 

Summary: TP-Link’s October 2025 security updates fixes 4 vulnerabilities in its Omada Gateway devices, including multiple models commonly used in business networks.

OEM TP-Link 
Severity Critical 
CVSS Score 9.3 
CVEs CVE-2025-6541, CVE-2025-6542, CVE-2025-7850, CVE-2025-7851 
Date of Announcement 2025-10-21 
Actively Exploited No 
Exploited in Wild No 
Advisory Version 1.0 

Overview: 

The vulnerabilities allow attackers to execute remote commands, even without authentication, potentially compromising systems. Some vulnerabilities also let authenticated users inject commands or gain root access, which could lead to traffic interception, configuration changes or malware installation. Security teams are advised to update firmware immediately, review network configurations and change passwords to reduce the risk of exploitation. 

Vulnerability Name CVE ID Product Affected Severity CVSS Score 
OS Command Injection Vulnerability CVE-2025-6542 TP-Link Omada Gateways Critical 9.3 
Command Injection Vulnerability CVE-2025-7850 TP-Link Omada Gateways Critical 9.3 

Technical Summary: 

TP-Link Omada Gateways allows attackers to run arbitrary commands. The most critical one, CVE-2025-6542, a remote attacker can take full control of the device without logging in through the web interface. Another one allows logged-in users to inject commands and gain root access. The issues show the risks of exposed management portals. TP-Link recommends updating firmware, limiting network access and monitoring systems for any signs of attack. 

CVE ID System Affected  Vulnerability Details Impact 
CVE-2025-6542 TP-Link Omada Gateways (ER605, ER7206, ER8411 & Others) Unauthenticated remote attackers can execute arbitrary OS commands on the device Remote Code Execution,  System Compromise, Malware Deployment 
CVE-2025-7850 TP-Link Omada Gateways (ER7412-M2, ER7212PC, & Others) Command injection exploitable after admin authentication on the web portal System Compromise,  Root-Level Control 

Additional Vulnerabilities: 

The following high-severity vulnerabilities were also addressed in October 2025 TP-Link security updates for Omada Gateways – 

Vulnerability Name CVE ID Affected Component Severity 
Authenticated Arbitrary OS Command Execution in Omada Gateways CVE-2025-6541 TP-Link Omada Gateways High 
Root Shell Access Under Restricted Conditions in Omada Gateways CVE-2025-7851 TP-Link Omada Gateways High 

Remediation: 

Install the October 2025 firmware updates immediately via the TP-Link support portal to mitigate risks. Here is the below table with the updated version information for the models. 

Model Affected Versions Fixed Version 
ER8411 < 1.3.3 Build 20251013 Rel.44647 >= 1.3.3 Build 20251013 Rel.44647 
ER7412-M2 < 1.1.0 Build 20251015 Rel.63594 >= 1.1.0 Build 20251015 Rel.63594 
ER707-M2 < 1.3.1 Build 20251009 Rel.67687 >= 1.3.1 Build 20251009 Rel.67687 
ER7206 < 2.2.2 Build 20250724 Rel.11109 >= 2.2.2 Build 20250724 Rel.11109 
ER605 < 2.3.1 Build 20251015 Rel.78291 >= 2.3.1 Build 20251015 Rel.78291 
ER706W < 1.2.1 Build 20250821 Rel.80909 >= 1.2.1 Build 20250821 Rel.80909 
ER706W-4G < 1.2.1 Build 20250821 Rel.82492 >= 1.2.1 Build 20250821 Rel.82492 
ER7212PC < 2.1.3 Build 20251016 Rel.82571 >= 2.1.3 Build 20251016 Rel.82571 
G36 < 1.1.4 Build 20251015 Rel.84206 >= 1.1.4 Build 20251015 Rel.84206 
G611 < 1.2.2 Build 20251017 Rel.45512 >= 1.2.2 Build 20251017 Rel.45512 
FR365 < 1.1.10 Build 20250626 Rel.81746 >= 1.1.10 Build 20250626 Rel.81746 
FR205 < 1.0.3 Build 20251016 Rel.61376 >= 1.0.3 Build 20251016 Rel.61376 
FR307-M2 < 1.2.5 Build 20251015 Rel.76743 >= 1.2.5 Build 20251015 Rel.76743 

Here are some recommendations below 

  • Restrict network access to the management interface and enable trusted networks only. 
  • Apply least privilege principles and regular security audits for network devices. 
  • Disable remote management if not required and segment networks to limit lateral movement. 

Conclusion: 

There is no active exploitation noticed but organizations must prioritize firmware updates to prevent data breaches, malware and intrusions. Security teams should deploy updates immediately, enhance monitoring and implement mitigations to safeguard critical infrastructure. 

References: 

 

Blogs

New Stealit Malware Campaign Leveraged VPN installers to Exploit Node.js as per Fortinet

Cyber criminals are installing Stealit malware campaign that leverages VPN installers to exploit Node.js’ Single Executable Application (SEA) features and distribute its payloads. In the past Stealit campaigns were built using Electron, an open-source framework that packages Node.js scripts as NSIS installers for distribution. 

As per Fortinet cyber criminals deployed a new active Stealit malware campaign deploying via disguised applications.

Malware campaign are now designed and placed in such a way are mostly AI-generated, legitimate-looking code to infiltrate systems. These malwares can evade detection and gain persistent access to maximize disruption worldwide.

Researchers observed that filenames this malware is used and distributed as disguised installers for games and VPN applications. This was same as observed in previous campaigns.

How the campaign was devised?

First the cyber criminals gained initial access is gained via fake game and VPN installers bundled in PyInstaller and common compressed archives. Then uploaded to file-sharing sites such as Mediafire and Discord.

The threat actor then employed heavy obfuscation and numerous anti-analysis techniques to evade detection and complicate analysis.

Purpose of Stealit Campaign

The present situation are making attackers more desperate try to integrate these malware in games, demo s to make them appear legitimate. In some situations, the game might be real but one cannot deny presence of malware.

These files look safe, but they are designed to run code that steals credentials, drains cryptocurrency wallets, or takes over accounts.

In some cases, attackers slip the malware into an update after release so it’s not suspicious from the get-go. Other times, they redirect players off a storefront to an external download that evades platform checks.

When the malware binary was updated, Stealit has relocated its panel website to new domains. When reserachers first observed this campaign, the panel—also functioning as the Command-and-Control (C2) server—was hosted at stealituptaded[.]lol. As per researchers the domain quickly became inaccessible as the C2 server was moved to iloveanimals[.]shop.

Accessing the panel leads to a commercial website for Stealit, which promotes itself as offering “professional data extraction solutions” through various subscription plans.

A dedicated features page outlines its capabilities, highlighting typical remote access trojan (RAT) functionalities such as file extraction, webcam control, live screen monitoring, and ransomware deployment targeting both Android and Microsoft Windows systems. The site also features instructional videos that demonstrate how the service operates on each platform.

The website offers payment plans for the Windows and Android versions of the stealer, with lifetime subscriptions available for approximately $ 500 and $ 2,000, respectively.

The service also has a Telegram channel named StealitPublic, where they post updates and promotions to possible clients. The main contact person is a Telegram user with the handle @deceptacle.

Operators of the malware have also imbued the latest Stealit variant with heavily obfuscated code and comprehensive anti-analysis checks. Such findings were regarded by Bugcrowd Chief Strategy and Trust Officer Trey Ford as indicative of an evolving focused cyber campaign.

At the end we should remember that threat actors can time their campaigns for maximum effect and any time new content could appear and any hype paves way for “early access” invites much more believable.

We often or might encounter weather On Discord or Telegram, attackers rely on social engineering and compromise accounts by sending messages as ‘try our game” and subsequently that messages also reach friends.

Victims often trust the sender and install the file this extends the scam’s reach.

(Reference: https://www.fortinet.com/blog/threat-research/stealit-campaign-abuses-nodejs-single-executable-application)

Blogs

Cyber Campaign by Hacker’s on Microsoft teams invites to execute “device code phishing” attacks 

Microsoft Teams have been on top of prime targets by threat actors and this time a Cyber campaign by Storm-2372 a hacking group targeted Microsoft Teams, a platform where collaboration and meeting is most sought after while inviting for meeting and executing “device code phishing” attacks.

The cyber campaign targets governments, NGOs, IT services, defense, telecommunications, health, education, and energy sectors across Europe, North America, Africa, and the Middle East. Microsoft Threat Intelligence team has rounded up and hardened the Teams environment, with countermeasures and controls across identity, endpoints, and network layers.

“It should come as no surprise that if they can build a persona for social engineering, they will take advantage of the same resources as legitimate organizations, including custom domains and branding, especially if it can lend credibility to impersonating internal help desk, admin, or IT support,” Microsoft explains.

Prime Target of Hackers

The attack pattern reveal type of social engineering campaign, which often combines a traditional email spam campaign with Microsoft Teams-based manipulation.

The primary target of hackers is to use convincing pretexts to compromise targets through chat messaging or phone calls. But for actual compromise and initial access on Teams, hackers will need to deliver information-stealing malware, which leads to credential theft, extortion, and ransomware.

As Microsoft Team is popular it is also a carrier of Malware which are mostly information stealing. Microsoft noted the rise in email bombing (sending large volumes of emails) to create a sense of urgency.

Not one but many hacking groups have previously targeted Microsoft teams of which Russian hackers from Midnight Blizzard have been imitating security and tech support teams. The hackers urging targets to “verify their identities under the pretext of protecting their accounts by entering authentication codes.”

Microsoft noted the rise in email bombing (sending large volumes of emails) to create a sense of urgency. These emails prompt recipients to authenticate using the provided device code on Microsoft’s legitimate login page.

The threat actor targets the victim, allows him to complete authentication then intercepts the access and refresh tokens generated during the process. 

(Image courtesy: Cybersecuritynews.com)

Threat Mitigation strategies:

  • Any suspicious activity if detected, revoke user refresh tokens using revokeSignInSessions.
  • Important to Enforce MFA and block risky sign-ins based on user behavior.
  • FIDO tokens or passkeys instead of SMS-based MFA must be adopted
  • Integrate streamlined monitoring and response with on-premises directories .

The attackers’ intent was to convince users to download the remote monitoring and management (RMM) tool, AnyDesk, which would give them initial access to the target environment with the ultimate aim of deploying ransomware.

Security Advisory

Threat Actors Exploiting Microsoft Teams to Gain Remote Access & Transfer Malware 

Security Advisory:

A new wave of social engineering attacks is exploiting Microsoft Teams, one of the most trusted enterprise collaboration platforms as a malware delivery channel.

Threat actors are impersonating IT support staff to trick employees into installing remote access tools and running malicious PowerShell scripts, enabling full compromise of victim environments. 

This campaign represents an evolution beyond traditional phishing, weaponizing corporate communication channels that employees inherently trust. Once access is established, attackers deploy multifunctional malware loaders such as DarkGate and Matanbuchus, with capabilities for credential theft, persistence, lateral movement and ransomware deployment. 

Technical Summary 

Security researchers have observed financially motivated threat groups abusing Microsoft Teams chats and calls to impersonate IT administrators. Attackers create malicious or compromised Teams accounts often using convincing display names like “IT SUPPORT ” or “Help Desk Specialist” as looking like legitimate and verified account to initiate direct conversations with employees. The social engineering process typically follows this chain 

Attack Process                                                                             Source: permiso.io 

It included the malware features 

  • Credential theft via GUI-based Windows prompts. 
  • Persistence using Scheduled Tasks (e.g. Google LLC Updater) or Registry Run keys. 
  • Encrypted C2 communications with hardcoded AES keys & IVs. 
  • Process protection via RtlSetProcessIsCritical, making malware harder to remove. 
  • Harvesting system info for reconnaissance and follow-on payloads. 

The campaigns have been linked to threat actor groups such as Water Gamayun (aka EncryptHub), known for blending social engineering, custom malware and ransomware operations. 

Element Detail 
Initial Access Direct messages/calls via Microsoft Teams impersonating IT staff 
Social Engineering Fake IT accounts with display names like “IT SUPPORT ✅” and onmicrosoft.com domains 
Malicious Tools QuickAssist, AnyDesk, PowerShell-based loaders (DarkGate, Matanbuchus) 
Persistence Scheduled Tasks (Google LLC Updater), Registry autoruns 
Payload Features Credential theft, system profiling, encrypted C2, remote execution 
Target Enterprise employees, IT professionals, developers 
Objective Credential theft, long-term access, ransomware deployment 

IOCs 

Organizations are urged to block the following indicators immediately: 

Indicator Type 
https://audiorealteak[.]com/payload/build.ps1 URL 
https://cjhsbam[.]com/payload/runner.ps1 URL 
104.21.40[.]219 IPv4 
193.5.65[.]199 IPv4 
Mozilla/5.0 (Windows NT; Windows NT 10.0; en-US) AppleWebKit/534.6 (KHTML, like Gecko) Chrome/7.0.500.0 Safari/534.6 UA 
&9*zS7LY%ZN1thfI Initialization Vector 
123456789012345678901234r0hollah Encryption Key 
62088a7b-ae9f-2333-77a-6e9c921cb48e Mutex 
Help Desk Specialist  User Display Name 
IT SUPPORT User Display Name 
Marco DaSilva IT Support  User Display Name 
IT SUPPORT  User Display Name 
Help Desk User Display Name 
@cybersecurityadm.onmicrosoft.com User Principal Name 
@updateteamis.onmicrosoft.com User Principal Name 
@supportbotit.onmicrosoft.com User Principal Name 
@replysupport.onmicrosoft.com User Principal Name 
@administratoritdep.onmicrosoft.com User Principal Name 
@luxadmln.onmicrosoft.com User Principal Name 
@firewalloverview.onmicrosoft.com User Principal Name 

Remediation: 

  1. Strengthen Microsoft Teams Security 
  • Restrict external tenants and enforce strict access control on Teams. 
  • Implement anomaly detection for suspicious Teams account activity. 
  • Block installation of unauthorized remote access tools (QuickAssist, AnyDesk). 

2. Enhance Endpoint & Network Defenses 

  • Monitor PowerShell execution with EDR/XDR solutions. 
  • Detect persistence artifacts (scheduled tasks, autorun keys, rundll32 activity). 
  • Block known IoCs at DNS/firewall levels. 

 3. Employee Awareness & MFA Security 

  • Train employees to verify IT support requests through independent channels. 
  • Warn staff against installing software via unsolicited Teams messages. 
  • Enforce multi-factor authentication (MFA) for all accounts. 

Conclusion: 
By shifting malware delivery into Microsoft Teams, attackers are exploiting a platform that enterprises inherently trust. The blending of social engineering with technical abuse of PowerShell and remote access tools makes this campaign particularly dangerous, enabling attackers to infiltrate organizations without relying on traditional email phishing. 

Organizations must treat collaboration platforms as high-value attack surfaces not just communication tools. Strengthening monitoring, restricting external interactions and training employees to validate IT requests are critical to defending against this evolving threat.  

References: 

Blogs

Deep Dive into AI Ransomware ‘PromptLock’ Malware

AI Ransomware ‘PromptLock’ uses OpenAI gpt-oss-20b Model for Encryption has been identified by ESET research team, is believed to be the first-ever ransomware strain that leverages a local AI model to generate its malicious components. As we Deep dive into AI Ransomware we discover the intricacies and challenges organizations face dure to AI ransomware.

The malware uses OpenAI’s gpt-oss:20b model via the Ollama API to create custom, cross-platform Lua scripts for its attack.

PromptLock is written in Golang and has been identified in both Windows and Linux variants on the VirusTotal repository and uses the gpt-oss:20b model from OpenAI locally via the Ollama API to generate malicious Lua scripts in real-time.

ESET researchers have discovered the first known AI-powered ransomware. The malware, which ESET has named PromptLock, has the ability to exfiltrate, encrypt and possibly even destroy data, though this last functionality appears not to have been implemented in the malware yet.

PromptLock was not spotted in actual attacks and is instead thought to be a proof-of-concept (PoC) or a work in progress, ESET’s discovery shows how malicious use of publicly-available AI tools could supercharge ransomware and other pervasive cyberthreats.

“The PromptLock malware uses the gpt-oss-20b model from OpenAI locally via the Ollama API to generate malicious Lua scripts on the fly, which it then executes. PromptLock leverages Lua scripts generated from hard-coded prompts to enumerate the local filesystem, inspect target files, exfiltrate selected data, and perform encryption,” said ESET researchers.

New Era of AI Generated Ransomware

A tool can be used to automate various stages of ransomware attacks and the same can be said as AI-powered malware are able to adapt to the environment and change its tactics on the fly and warns of a new frontier in cyberattacks.

Its core functionality is different then traditional ransomware, which typically contains pre-compiled malicious logic. Instead, PromptLock carries hard-coded prompts that it feeds to a locally running gpt-oss:20b model.

As per researchers for its encryption payload, PromptLock utilizes the SPECK 128-bit block cipher, a lightweight algorithm suitable for this flexible attack model.

ESET researchers emphasize that multiple indicators suggest PromptLock is still in a developmental stage. For instance, a function intended for data destruction appears to be defined but not yet implemented.

Indicators of Compromise (IoCs)

Malware Family: Filecoder.PromptLock.A

SHA1 Hashes:

  • 24BF7B72F54AA5B93C6681B4F69E579A47D7C102
  • AD223FE2BB4563446AEE5227357BBFDC8ADA3797
  • BB8FB75285BCD151132A3287F2786D4D91DA58B8
  • F3F4C40C344695388E10CBF29DDB18EF3B61F7EF
  • 639DBC9B365096D6347142FCAE64725BD9F73270
  • 161CDCDB46FB8A348AEC609A86FF5823752065D2

Given LLMs’ success, many companies and academic groups are currently creating all kinds of models and constantly developing variants and improvements to LLM. In the context of LLMs, a “prompt” is an input text given to the model to generate a response. 

The success rate is high so threat actors are leveraging these models for illicit purposes, making it easier to create sophisticated attacks like ransomware and evade traditional defenses. sale of models Now

By automating the creation of phishing emails, ransomware scripts, and malware payloads, LLMs allow less skilled attackers to conduct sophisticated campaigns.

For AI-powered ransomware

AI-powered ransomware is a challenging threat to organizations far and above older attack tactics adopted by cyber criminals. If organization’s basic defensive methods such as ensuring critical vulnerabilities are patched as soon as possible, network traffic is monitored and implementing offline backups applied on time.

How Intrucept helps Defend Against AI-Powered Ransomware

Analyzing threat by behavior allows for early detection and response to malware threats and alert generation,. This reduces the risk of data exfiltration.

Intru360

Intru360 gives security analysts and SOC managers a clear view across the organization, helping them fully understand the extent and context of an attack. It also simplifies workflows by automatically handling alerts, allowing for faster detection of both known and unknown threats.

Identify latest threats without having to purchase, implement, and oversee several solutions or find, hire, and manage a team security analyst.

Unify latest threat intelligence and security technologies to prioritize the threats that pose the greatest risk to your company.

Here are some features we offer:

  • Over 400 third-party and cloud integrations.
  • More than 1,100 preconfigured correlation rules.
  • Ready-to-use threat analytics, threat intelligence service feeds, and prioritization based on risk.
  • Prebuilt playbooks and automated response capabilities.

Source of above graphics : Courtesy: First AI Ransomware ‘PromptLock’ Uses OpenAI gpt-oss-20b Model for Encryption

Blogs

Fake ChatGPT Desktop App used to deliver PipeMagic Malware

Microsoft finds that a fake ChatGPT Desktop App Delivering PipeMagic Backdoor,a part of sophisticated malware framework. The PipeMagic campaign represents a dangerous evolution in the global cybercrime landscape. The malicious campaign, powered by a new backdoor called PipeMagic, targets multiple industries including IT, finance, and real estate. The PipeMagic attack is centered around CVE-2025-29824, a critical Windows Common Log File System (CLFS) vulnerability

The PipeMagic campaign a malware to technical threat exploiting trust globally

As per Microsoft cybercriminals are disguising malware as widely popular ChatGPT Desktop Application to launch ransomware attacks across the globe.  

PipeMagic’s evolution from malware to technical threat exploiting trust globally

The malware allows hackers to escalate privileges once inside a system, by leveraging the immense popularity of ChatGPT, attackers have successfully weaponized user trust.

Microsoft has linked the operation to Storm-2460, a financially motivated cybercrime group known for deploying ransomware through stealthy backdoors.

PipeMagic is a malware first detected in December 2022 while investigating a malicious campaign involving RansomExx. The victims were industrial companies in Southeast Asia. To penetrate the infrastructure, the attackers exploited the CVE-2017-0144 vulnerability.

The backdoor’s loader was a trojanized version of Rufus, a utility for formatting USB drives. PipeMagic supported two modes of operation – as a full-fledged backdoor providing remote access, and as a network gateway – and enabled the execution of a wide range of commands.

Pipemagic’s technique of attack

PipeMagic also reflects a growing trend where attackers combine fileless malware techniques with modular frameworks.

By running directly in memory, it avoids detection from traditional signature-based tools. The modular design means it can expand its functionality much like commercial software — essentially transforming cybercrime into a scalable business model.

Another key point is the use of cloud infrastructure for command-and-control. By hosting their servers on Azure, the hackers blend into normal enterprise traffic, making malicious communications far less suspicious. This tactic underscores the need for behavioral monitoring instead of relying solely on blacklists.

Microsoft attributes PipeMagic to a financially motivated group known as Storm-2460. This is a warning sign for future attacks in the broader cybersecurity landscape.

PipeMagic’s modus operandi could be an inspiration for future malware families and its modular framework could fuel a wave of ransomware-as-a-service operations. That possibility raises the stakes not just for enterprises but also for small businesses and even government institutions.

The first stage of the PipeMagic infection execution begins with a malicious in-memory dropper disguised as the open-source for chat GPT application project. The threat actor uses a modified version of the GitHub project that includes malicious code to decrypt and launch an embedded payload in memory.

The embedded payload is the PipeMagic malware, a modular backdoor that communicates with its C2 server over TCP. Once active, PipeMagic receives payload modules through a named pipe and its C2 server.

The malware self-updates by storing these modules in memory using a series of doubly linked lists.

These lists serve distinct purposes for staging, execution, and communication, enabling the threat actor to interact and manage capabilities of backdoor throughout its lifecycle.

By offloading network communication and backdoor tasks to discrete modules, PipeMagic maintains a modular, stealthy, and highly extensible architecture, making detection and analysis significantly challenging.

Microsoft Threat Intelligence encountered PipeMagic as part of research on an attack chain involving the exploitation of CVE-2025-29824, an elevation of privilege vulnerability in Windows Common Log File System (CLFS).

Blogs

Malware Uses AWS Lambda to collect data; Govt Org’s Across S E Asia affected by HazyBeacon

Data Stolen from various government based organizations across South east-Asia via State-Backed HazyBeacon Malware that Uses AWS Lambda was discovered and tracked by researchers Palo Alto Networks Unit 42 under the moniker CL-STA-1020.

Here “CL” stands for “cluster” and “STA” refers to “state-backed motivation, data collected include information about recent tariffs and trade disputes. The initial access vector used to deliver the malware is currently not known, although evidence shows the use of DLL side-loading techniques to deploy it on compromised hosts. Specifically, it involves planting a malicious version of a DLL called “mscorsvc.dll” along with the legitimate Windows executable, “mscorsvw.exe.”

Campaign execution flow

As per researchers backdoor leverages AWS Lambda URLs as command and control (C2) infrastructure. AWS Lambda URLs are a feature of AWS Lambda that allows users to invoke serverless functions directly over HTTPS.

This technique uses legitimate cloud functionality to hide in plain sight, creating a reliable, scalable and difficult-to-detect communication channel.

Figure 1 shows the high-level execution flow of this attack.

(Source: Behind the Clouds: Attackers Targeting Governments in Southeast Asia Implement Novel Covert C2 Communication)

Key points:

The malware is using a newly discovered Windows backdoor dubbed HazyBeacon.

Secondly, it exploits a legitimate feature of the AWS Lambda serverless compute service called Lambda URLs, to hide its malicious activities

AWS Lambda URLs are a part of AWS Lambda that allow users to invoke serverless functions directly over HTTPS.

In this attack, the HazyBeacon backdoor uses the service to establish C2 communications, allowing the actor to engage in covert intelligence gathering.

Researchers at Trellix, revealed the attacker tactic of using Lambda to obscure C2 activity in late June, noting that such obscurity “makes network-based detection nearly impossible without decryption or deep behavioral analysis,” according to their report.

During backdoor deployment, attackers also establish persistence on the compromised Windows endpoint by creating a Windows service named msdnetsvc, which ensures that the HazyBeacon DLL would be loaded even after rebooting the system.

Unit 42 included a list of indicators of compromise (IoCs) in the post to help identify a potential attack. Defenders can set their machine-learning models and analysis techniques to be triggered by those IoCs, as well as use behavioral threat protection to detect and block the execution of processes with malicious behavior in their cloud environments.

How the malware reaches out to serverless AWS Lambda endpoints

  • These URLs are hosted on cloud infrastructure that’s globally trusted
  • Traffic looks like regular HTTPS communication
  • Detection becomes near-impossible for traditional firewalls or EDRs

This use of cloud-native tools for C2 is a growing trend in advanced persistent threats (APTs).

South east Asia a focal point of target

The reason why Southeast Asia has increasingly becoming a focal point for cyber espionage mainly due various sensitive trade negotiations being done by countries, defense enhancement taken up by countries as a part of modernization and power alignment between U.S.–China.

Why threat actors chose this area via targeting government agencies as the data stolen carried various intelligence inputs that were based on foreign policy direction, infrastructure planning and various regulatory shifts that further influence the behavior of global markets.

HazyBeacon reflects a broader aspect and trend in cyber security related to advanced persistent threats using trusted platforms as covert channels.

This cloud-based malware cluster, similar techniques have been observed in threats using Google Workspace, Microsoft Teams, or Dropbox APIs to evade detection and facilitate persistent access.

Once the malware is on the system, it doesn’t want to leave. HazyBeacon registers itself as a Windows service, making sure it gets relaunched after every reboot.

Organizations who detect and mitigate this emerging threats also understand how attackers exploit cloud services for malicious purposes.

The misuse of AWS Lambda occurs when the malicious DLL, mscorsvc.dll, establishes a C2 channel through an AWS Lambda URL. AWS Lambda runs code in response to events without requiring server provisioning or management; the URLs feature, introduced in 2022, extends this functionality by providing customers with a way to configure dedicated HTTPS endpoints for Lambda functions.

Source: 🔍 Deep Dive: How State‑Backed HazyBeacon Malware is Weaponizing AWS Lambda & Steganography | by Abhay Haswani | Jul, 2025 | Medium

Security Advisory

SEO Poisoning Campaign Targets IT Admins with Weaponized PuTTY & WinSCP 

SEO poisoning & malvertising campaign Summary 

A sophisticated SEO poisoning and malvertising campaign has been active since early June 2025, targeting IT administrators with Trojanized installers of commonly used tools like PuTTY and WinSCP. 

Attackers are manipulating search engine results and sponsored ads to lead users to fake websites, which deliver backdoored versions of these tools. Arctic Wolf security researchers have uncovered thia malvertising campaign that has been targeting IT professionals since early June 2025.

The malicious campaign leverages search engine manipulation to promote fake download sites that closely mimic legitimate software repositories. 

Technical Summary 

A threat campaign has been leveraging SEO poisoning and malicious advertisements to trick IT professionals into downloading Trojanized versions of PuTTY and WinSCP from fake websites. Once installed, a malware known as Oyster (aka Broomstick) creates persistent access within the victim’s environment, posing a severe risk to enterprise infrastructure. 

This malware establishes persistence by creating a scheduled task that triggers every three minutes, invoking rundll32.exe to execute a malicious DLL named twain_96.dll using the DllRegisterServer export function, a technique commonly used to bypass traditional detection.  

The attackers specifically target IT administrators and system operators due to their elevated privileges, which allows rapid lateral movement, access to sensitive systems such as domain controllers and the potential deployment of additional payloads like ransomware.

The campaign’s effectiveness stems from its exploitation of everyday workflows, especially IT admins’ reliance on search engines to download tools making it both highly targeted and socially engineered for success. 

Element Detail 
Initial Access SEO poisoning and fake sponsored ads redirect users to malicious download sites. 
Malicious Tools Trojanized installers of PuTTY and WinSCP. 
Payload Backdoor malware is known as Oyster/Broomstick. 
Persistence Scheduled Task every 3 minutes executing twain_96.dll using rundll32.exe via DllRegisterServer. 
Target IT admins with elevated privileges (Domain Admins, Server Admins). 
Objective Network penetration, domain controller access, data exfiltration, possible ransomware deployment. 

Malicious Sponsored PuTTY Ad on Bing.       Source: Arcticwolf 

Observed Malicious Domains 

Organizations are urged to block the following domains immediately: 

  • updaterputty[.]com 
  • zephyrhype[.]com 
  • putty[.]run 
  • putty[.]bet 
  • puttyy[.]org 

These domains host fake versions of PuTTY and WinSCP and are actively used in the ongoing campaign. 

Remediation: 

1. Enforce Trusted Software Acquisition Policies 

  • Mandate the use of verified internal software repositories or direct access to official vendor websites. 
  • Where feasible, implement ad-blocking or web filtering to restrict access to software download categories known to be targeted by malvertising. 

2. Strengthen Network and Endpoint Security Controls 

  • Block known malicious domains at firewall and DNS levels. 
  • Continuously monitor endpoints for suspicious behavior, including: 
  • The creation of unauthorized or high frequency scheduled tasks. 
  • DLL execution via rundll32.exe, especially involving non-standard DLLs such as twain_96.dll. 
  • Deploy or enhance EDR/XDR solutions to detect backdoor persistence methods. 

3. User Awareness 

  • Educate IT staff on SEO poisoning and the risks of downloading tools via search results. 

Conclusion: 
By focusing on widely used administrative tools like PuTTY and WinSCP, threat actors are exploiting the trust and habits of IT professionals through convincing social engineering and poisoned search results.

This approach turns essential tools into delivery mechanisms for backdoors and persistent threats, compromising high-privilege users at the core of enterprise infrastructure.  

Organizations must respond decisively by reinforcing endpoint monitoring, tightening software acquisition policies and implementing robust network-level defenses to mitigate the risks posed by this rapidly evolving threat landscape. 

References: 

Blogs

Cyber-Breach on Qantas Airliner re-echo’s Cyber Risk associated with Third Party

Third-party vendors are critical to and business or industry – but they confirm to significant amount of cyber risk. Qanatas airline confirmed of cyber attack where nearly  six million customers data may have been compromised. The airliner issued statement that said credit card details, financial information, and passport details were not part of the breach.

Qantas said in a statement: “We are continuing to investigate the proportion of the data that has been stolen, though we expect it will be significant. An initial review has confirmed the data includes some customers’ names, email addresses, phone numbers, birth dates and frequent flyer numbers.”

The alarming aspect of a third-party data breach is the sheer scale of impact. Hackers have the potential to attack thousands of organizations in one fell swoop.

KPMG, study showed how 73% of organizations have experienced at least one significant disruption from a third-party cyber incident within the last three years. 

Qantas Group chief executive Vanessa Hudson said the company was working closely with the National Cyber Security Coordinator and the Australian Cyber Security Centre.

We sincerely apologies to our customers and we recognize the uncertainty this will cause. Our customers trust us with their personal information, and we take that responsibility seriously,” she said.

In the breach that affected Qantas airliner which is one of the oldest, did not point to any hackers group. This data breach is one of Australia’s biggest breach in years which caused major setback and reputation damage to an airliner.

Last week, FBI said Scattered Spider group  was targeting airlines and that Hawaiian Airlines (HAII.UL) and Canada’s WestJet had already reported breaches. Read more on our blogs:

Key pointer of the Qantas Breach

The Cyber hacker broke into a database containing the personal information of millions of customer.

The breach was executed by hackers who targeted a call center and gained access to a third-party customer service platform containing six million names, email addresses, phone numbers, birth dates and frequent flyer numbers.

Third party risk management is complex but neglecting can be fatal for organizations whose data volume is huge such as airliners.

The airline is emailing affected customers and has set up a dedicated support line at 1800 971 541 (or +61 2 8028 0534 from overseas).

If we observe in recent past 2020, the solar Winds attack that happened where Solar winds confirmed that its network had been penetrated by a malicious actor and a complex malware program inserted into software updates of its technology platform – SolarWinds OrionⓇ.

Such is the magnitude of the attack that the malware program comprised a multistage process, scanning downstream customer networks to detect security tools it could avoid or disable, and stealthily connecting to the attacker’s command and control servers. The malware persisted for months before initial detection.

The solar winds attack cost to the company amounted to significant loss with Incident response and forensic services cost companies 11% of their annual revenue (an average of $12 million). 

How to make sure your vendor don’t create unnecessary risk that pose challenge for organization at large

First ensure your third party vendor’s meet the required robust security posture

Vendor risk assessment must be done holistically by streamlining due diligence

Upon discovery of any vulnerabilities, it is important that customizing and updating security requirements of the newly discovered threats and patch.

As a part of better threat mitigation strategy it is important that to automate vendors onboarding this will provide agility.

Managing Third party risk with Intru360

A research with KPMG found that found 61% of businesses underestimate third party risk management and often also struggle to have a healthy operation model and scale it same time.

KPMG research further found that Third-party/nth-party risk management that covers all third-party relationships over the entire life cycle; subjects vendors that support critical activities or are heavily relied upon to more comprehensive and rigorous oversight; and considers transition, contingency, recovery, and duplicity alternatives.

With most of the technology investments fail to provide visibility into third-party risk, we at Intercept help you to expand the scope and cover third parties related risk areas by identifying.

Intru360 gives security analysts and SOC managers a clear view across the organization, helping them fully understand the extent and context of an attack. It also simplifies workflows by automatically handling alerts, allowing for faster detection of both known and unknown threats.

In vendor security and management here are some of the features we offer to make sure cyber health of each and every supplier is checked and alerts are placed to get notification.

Prebuilt playbooks and automated response capabilities.

Over 400 third-party and cloud integrations.

More than 1,100 preconfigured correlation rules.

Ready-to-use threat analytics, threat intelligence service feeds, and prioritization based on risk.

Sources: https://www.techtarget.com/whatis/feature/SolarWinds-hack-explained-Everything-you-need-to-know

https://kpmg.com/us/en/articles/2022/ten-key-regulatory-challenges-2023-risk-governance.html
https://www.sbs.com.au/news/article/qantas-data-breach-everything-we-know-so-far-about-stolen-customer-details/49iggxre0

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