General

  • Target

    7c2553e0b991923e0c4aa1410cf06cb686a455c5ea2867fc00778da787f8dc05N

  • Size

    4.9MB

  • Sample

    241102-3q686s1rgj

  • MD5

    ae0ba9569cf7c10b38e333294ecd7e70

  • SHA1

    ea845af8e5d2a2faee5881f904e79f6316e461dd

  • SHA256

    7c2553e0b991923e0c4aa1410cf06cb686a455c5ea2867fc00778da787f8dc05

  • SHA512

    b9959a49727c1867aeb71d71c9b26cbf0094bb6a310dec981f110d09d9b2aa3d33b9800ae6736cd66c51720ae76d0b6b5887e138377429f6aea6c142b247bd2d

  • SSDEEP

    49152:bl5MTGChZpxtlBBgxchXb/zqP6DUtRgs5q289dAnSz44hnW1XgnYu6fYmPkMSx8E:

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

      7c2553e0b991923e0c4aa1410cf06cb686a455c5ea2867fc00778da787f8dc05N

    • Size

      4.9MB

    • MD5

      ae0ba9569cf7c10b38e333294ecd7e70

    • SHA1

      ea845af8e5d2a2faee5881f904e79f6316e461dd

    • SHA256

      7c2553e0b991923e0c4aa1410cf06cb686a455c5ea2867fc00778da787f8dc05

    • SHA512

      b9959a49727c1867aeb71d71c9b26cbf0094bb6a310dec981f110d09d9b2aa3d33b9800ae6736cd66c51720ae76d0b6b5887e138377429f6aea6c142b247bd2d

    • SSDEEP

      49152:bl5MTGChZpxtlBBgxchXb/zqP6DUtRgs5q289dAnSz44hnW1XgnYu6fYmPkMSx8E:

    • Colibri Loader

      A loader sold as MaaS first seen in August 2021.

    • Colibri family

    • DcRat

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

    • Dcrat family

    • 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