General

  • Target
    8286bc5b89759048ad65136a2d8d4ee52a431798a4664917e926dea98c61e78eN
  • Size 4.9MB
  • Sample240917-ebecvashle
  • SHA256 8286bc5b89759048ad65136a2d8d4ee52a431798a4664917e926dea98c61e78e
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • colibri

Version
  • 1.2.0

Botnet
  • Build1

C2
  • http://zpltcmgodhvvedxtfcygvbgjkvgvcguygytfigj.cc/gate.php

  • http://yugyuvyugguitgyuigtfyutdtoghghbbgyv.cx/gate.php

rc4.plain

Targets

    • Target
      8286bc5b89759048ad65136a2d8d4ee52a431798a4664917e926dea98c61e78eN
    • Size 4.9MB
    • SHA256 8286bc5b89759048ad65136a2d8d4ee52a431798a4664917e926dea98c61e78e
    • MD5 SHA1 SHA512 SSDEEP
    • Colibri Loader

      A loader sold as MaaS first seen in August 2021.

    • DcRat

      DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • UAC bypass

    • DCRat payload

      Detects payload of DCRat, commonly dropped by NSIS installers.

    • 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.

    • Executes dropped EXE

    • Checks whether UAC is enabled

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks