General

  • Target

    fba69a368d73d2a2232258d465d825481048ec5cab01cffc0241dd6a37f12d25N.exe

  • Size

    4.9MB

  • Sample

    241216-ry949atmfq

  • MD5

    ebc81db3d71154bc617356d897e0d450

  • SHA1

    d8a2a478437abd6f69685903700b1e9e5a30c6ce

  • SHA256

    fba69a368d73d2a2232258d465d825481048ec5cab01cffc0241dd6a37f12d25

  • SHA512

    33dd0b853085ff2256384c34b44652b9815a34920eea200a3859ac7f626e9795036bdcac6b2de8cf4c03d433431ea5121676f84312a7a90f34fdeb6a8c54ea72

  • SSDEEP

    49152:Dl5MTGChZpxtlBBgxchXb/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

      fba69a368d73d2a2232258d465d825481048ec5cab01cffc0241dd6a37f12d25N.exe

    • Size

      4.9MB

    • MD5

      ebc81db3d71154bc617356d897e0d450

    • SHA1

      d8a2a478437abd6f69685903700b1e9e5a30c6ce

    • SHA256

      fba69a368d73d2a2232258d465d825481048ec5cab01cffc0241dd6a37f12d25

    • SHA512

      33dd0b853085ff2256384c34b44652b9815a34920eea200a3859ac7f626e9795036bdcac6b2de8cf4c03d433431ea5121676f84312a7a90f34fdeb6a8c54ea72

    • SSDEEP

      49152:Dl5MTGChZpxtlBBgxchXb/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