General

  • Target

    PassatHook.exe

  • Size

    81KB

  • Sample

    250118-3gbqxayjfv

  • MD5

    6a94bba080aa0680e802f11fc15f3097

  • SHA1

    5c02939054e727378cb0b53d33cf10fbce153ab8

  • SHA256

    799e38a2d934e537b2f1caf0803549a16f436b36c75d370f82d8565fa707945a

  • SHA512

    4de71ce1b3f3de66626a03f136f19f49bd9df9bafc1ded49e1df4c2ee4466e05e8e6c8de88ee45f36118d8d2f5c5194641ba4382fada02d34be2dccfe544c84e

  • SSDEEP

    1536:jV8pE5LncGZb7ivIUn72/aN6nnOP8YKqX:jV8mncCb2jeOE0X

Malware Config

Extracted

Family

xworm

C2

yet-involving.gl.at.ply.gg:21072

Attributes
  • Install_directory

    %AppData%

  • install_file

    Perm.exe

Targets

    • Target

      PassatHook.exe

    • Size

      81KB

    • MD5

      6a94bba080aa0680e802f11fc15f3097

    • SHA1

      5c02939054e727378cb0b53d33cf10fbce153ab8

    • SHA256

      799e38a2d934e537b2f1caf0803549a16f436b36c75d370f82d8565fa707945a

    • SHA512

      4de71ce1b3f3de66626a03f136f19f49bd9df9bafc1ded49e1df4c2ee4466e05e8e6c8de88ee45f36118d8d2f5c5194641ba4382fada02d34be2dccfe544c84e

    • SSDEEP

      1536:jV8pE5LncGZb7ivIUn72/aN6nnOP8YKqX:jV8mncCb2jeOE0X

    • Contains code to disable Windows Defender

      A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

    • Detect Xworm Payload

    • UAC bypass

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Xworm family

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Drops startup file

    • Executes dropped EXE

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Adds Run key to start application

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

MITRE ATT&CK Enterprise v15

Tasks