General

  • Target

    ca2f91b5d5d54a3fb916249210e53552b78ec7f4ffdce9be81884be15bef2847

  • Size

    4.9MB

  • Sample

    241120-eatfdavmfp

  • MD5

    4e3ae6b4f8ea1c5d2fb3a8bc008e2fff

  • SHA1

    22329e6ce220cce52f7dde6e03c082d31f27bbae

  • SHA256

    ca2f91b5d5d54a3fb916249210e53552b78ec7f4ffdce9be81884be15bef2847

  • SHA512

    6394d0a6883e478bf7f196ef1c829ff7d579ebfde1ddbdd5c59a57eb40ba82c5c15f41f71bfa4f31227198c8d722c5872c0aa01d5e750dd19523a8237db5b655

  • SSDEEP

    49152:Ll5MTGChZpxtlBBgxchXb/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

      ca2f91b5d5d54a3fb916249210e53552b78ec7f4ffdce9be81884be15bef2847

    • Size

      4.9MB

    • MD5

      4e3ae6b4f8ea1c5d2fb3a8bc008e2fff

    • SHA1

      22329e6ce220cce52f7dde6e03c082d31f27bbae

    • SHA256

      ca2f91b5d5d54a3fb916249210e53552b78ec7f4ffdce9be81884be15bef2847

    • SHA512

      6394d0a6883e478bf7f196ef1c829ff7d579ebfde1ddbdd5c59a57eb40ba82c5c15f41f71bfa4f31227198c8d722c5872c0aa01d5e750dd19523a8237db5b655

    • SSDEEP

      49152:Ll5MTGChZpxtlBBgxchXb/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