Menu

  • Alerts
  • Incidents
  • News
  • APTs
  • Cyber Decoded
  • Cyber Hygiene
  • Cyber Review
  • Cyber Tips
  • Definitions
  • Malware
  • Threat Actors
  • Tutorials

Useful Tools

  • Password generator
  • Report an incident
  • Report to authorities
No Result
View All Result
CTF Hack Havoc
CyberMaterial
  • Education
    • Cyber Decoded
    • Definitions
  • Information
    • Alerts
    • Incidents
    • News
  • Insights
    • Cyber Hygiene
    • Cyber Review
    • Tips
    • Tutorials
  • Support
    • Contact Us
    • Report an incident
  • About
    • About Us
    • Advertise with us
Get Help
Hall of Hacks
  • Education
    • Cyber Decoded
    • Definitions
  • Information
    • Alerts
    • Incidents
    • News
  • Insights
    • Cyber Hygiene
    • Cyber Review
    • Tips
    • Tutorials
  • Support
    • Contact Us
    • Report an incident
  • About
    • About Us
    • Advertise with us
Get Help
No Result
View All Result
Hall of Hacks
CyberMaterial
No Result
View All Result
Home Alerts

Mallox Evades AMSI with PowerShell Update

December 28, 2023
Reading Time: 1 min read
in Alerts
Mallox Evades AMSI with PowerShell Update

The Mallox ransomware group, active in targeting Indian companies since 2022, has updated its PowerShell script to circumvent Anti-Malware Scan Interface (AMSI) detection components used by antivirus (AV) software. This modification aims to evade detection during the attack chain, especially after gaining initial access through SQL or RDP.

The updated script attempts to bypass AV’s AMSI detection by patching the Windows Defender registered dll for AMSI, allowing the execution of malicious PowerShell scripts without triggering AV alerts. Outlined in the script, after importing Kernel32.dll and Amsi.dll, a shellcode is stored to overwrite the AMSI function in the registered DLL, MpOav.dll (Windows Defender’s AMSI).

By altering the permissions of MpOav.dll’s .txt section to PAGE_EXECUTE_READWRITE, the script replaces the AMSI function’s original content with shellcode, ensuring that subsequent PowerShell sessions deemed clean without AV scans. Following this modification, the script proceeds to its primary function of downloading the .NET downloader, evading AV detection. The Mallox group’s utilization of bypassing techniques highlights their adaptability when encountering AV detections.

To stay ahead of such threats, users are advised to keep abreast of evolving bypassing techniques employed by threat actors. Employing reputable security products like K7 Total Security, which actively detects and mitigates such techniques, is essential to safeguard devices in the current threat landscape. The K7 Labs team continually updates its product to combat the latest threats, emphasizing the importance of staying vigilant and using reliable security measures.

Reference:
  • Mallox Ransomware Adapts with AMSI Bypass for Covert Attacks
Tags: Cyber AlertCyber Alerts 2023Cyber RiskCyber threatDecember 2023Mallox ransomware
ADVERTISEMENT

Related Posts

OneDrive Flaw Gives Sites Full Data Access

OneDrive Flaw Gives Sites Full Data Access

May 30, 2025
OneDrive Flaw Gives Sites Full Data Access

Fake AI Apps Drop Ransomware And Malware

May 30, 2025
OneDrive Flaw Gives Sites Full Data Access

EDDIESTEALER Uses Fake CAPTCHAs for Stealing

May 30, 2025
APT41 Uses Google Calendar For C2 Operations

APT41 Uses Google Calendar For C2 Operations

May 29, 2025
APT41 Uses Google Calendar For C2 Operations

New PumaBot IoT Botnet Uses SSH Attack

May 29, 2025
APT41 Uses Google Calendar For C2 Operations

New NodeSnake RAT Hits UK Universities

May 29, 2025

Latest Alerts

EDDIESTEALER Uses Fake CAPTCHAs for Stealing

Fake AI Apps Drop Ransomware And Malware

OneDrive Flaw Gives Sites Full Data Access

New PumaBot IoT Botnet Uses SSH Attack

APT41 Uses Google Calendar For C2 Operations

New NodeSnake RAT Hits UK Universities

Subscribe to our newsletter

    Latest Incidents

    State Actors Hit ConnectWise ScreenConnect

    Ivanti Flaw Hits NHS Staff and Patient Data

    Amalgamated Sugar Data Breach Exposes SSNs

    Cork Protocol Paused After $12M Exploit

    Victoria’s Secret Site Down After Breach

    LexisNexis GitHub Breach Affects 364K People

    CyberMaterial Logo
    • About Us
    • Contact Us
    • Jobs
    • Legal and Privacy Policy
    • Site Map

    © 2025 | CyberMaterial | All rights reserved

    Welcome Back!

    Login to your account below

    Forgotten Password?

    Retrieve your password

    Please enter your username or email address to reset your password.

    Log In

    Add New Playlist

    No Result
    View All Result
    • Alerts
    • Incidents
    • News
    • Cyber Decoded
    • Cyber Hygiene
    • Cyber Review
    • Definitions
    • Malware
    • Cyber Tips
    • Tutorials
    • Advanced Persistent Threats
    • Threat Actors
    • Report an incident
    • Password Generator
    • About Us
    • Contact Us
    • Advertise with us

    Copyright © 2025 CyberMaterial