General

  • Target

    7e60f1b37aecfc21c61c46b534862a212af62ad8ce5b9af83ba9d8f4f32f5a81N.exe

  • Size

    4.9MB

  • Sample

    241220-ca2qmswrcj

  • MD5

    84c3e32da77210eb29452816fe3d4830

  • SHA1

    073ef3fe85c0ec68ad52c88c76644a8c2a4c0411

  • SHA256

    7e60f1b37aecfc21c61c46b534862a212af62ad8ce5b9af83ba9d8f4f32f5a81

  • SHA512

    d094bdaa1fe2c53ee7e955be38e295fbb09c7138865fa095aa2441d4b6faa49aa3773746e9f1e9e35677f7bb84dfec24e8525bdd774fdbe2e8b1867445294692

  • 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

      7e60f1b37aecfc21c61c46b534862a212af62ad8ce5b9af83ba9d8f4f32f5a81N.exe

    • Size

      4.9MB

    • MD5

      84c3e32da77210eb29452816fe3d4830

    • SHA1

      073ef3fe85c0ec68ad52c88c76644a8c2a4c0411

    • SHA256

      7e60f1b37aecfc21c61c46b534862a212af62ad8ce5b9af83ba9d8f4f32f5a81

    • SHA512

      d094bdaa1fe2c53ee7e955be38e295fbb09c7138865fa095aa2441d4b6faa49aa3773746e9f1e9e35677f7bb84dfec24e8525bdd774fdbe2e8b1867445294692

    • 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