Resubmissions

27-12-2024 17:46

241227-wcf2haxna1 10

26-12-2024 23:41

241226-3pykmsvnhx 10

General

  • Target

    3a8311c1bffc4aa452ac99de43e4c52f33749385cb788ab783e8efd35306ba54

  • Size

    144KB

  • Sample

    241226-3pykmsvnhx

  • MD5

    9e092ddaae5a606aa7562aefa6d19193

  • SHA1

    f89629fc9325aa4e18563b9fb37d9b01e404e954

  • SHA256

    3a8311c1bffc4aa452ac99de43e4c52f33749385cb788ab783e8efd35306ba54

  • SHA512

    477a5cace00bb9fe1322f80f73b4f55da96ca8b43fbb735853568c406358ea47d68f575eadff34d878ba58d576129e6f007d661138e8d43bd703c201e7aee382

  • SSDEEP

    3072:ICjy4wEgSRZg6tYJbpVOfraR+wS8WurzkMXEe99:nwhmOCYJb/EraRVS8l59

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:46732

listing-repository.gl.at.ply.gg:46732

Attributes
  • Install_directory

    %Userprofile%

  • install_file

    svchost.exe

Extracted

Family

umbral

C2

https://discord.com/api/webhooks/1321219981534298203/2bX3Cg6xbwKu45g5JAiVdKvMjVgYAyc-dGKLvybGhQzK_1h1Jt7szxeJv6nKrIMpNnXN

Targets

    • Target

      3a8311c1bffc4aa452ac99de43e4c52f33749385cb788ab783e8efd35306ba54

    • Size

      144KB

    • MD5

      9e092ddaae5a606aa7562aefa6d19193

    • SHA1

      f89629fc9325aa4e18563b9fb37d9b01e404e954

    • SHA256

      3a8311c1bffc4aa452ac99de43e4c52f33749385cb788ab783e8efd35306ba54

    • SHA512

      477a5cace00bb9fe1322f80f73b4f55da96ca8b43fbb735853568c406358ea47d68f575eadff34d878ba58d576129e6f007d661138e8d43bd703c201e7aee382

    • SSDEEP

      3072:ICjy4wEgSRZg6tYJbpVOfraR+wS8WurzkMXEe99:nwhmOCYJb/EraRVS8l59

    • Detect Umbral payload

    • Detect Xworm Payload

    • Umbral

      Umbral stealer is an opensource moduler stealer written in C#.

    • Umbral family

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Xworm family

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • 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

    • Legitimate hosting services abused for malware hosting/C2

    • 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