General

  • Target

    486f31da577a1addb7ac8ba5612de1a2c71cbc973867eefea40c0c1af361bc28N

  • Size

    4.9MB

  • Sample

    240919-3z2eaaybqr

  • MD5

    674e323ec8e3abd5ffcb9ebbaec24d40

  • SHA1

    2d6725a34476c325783b680e6d994ac62b659409

  • SHA256

    486f31da577a1addb7ac8ba5612de1a2c71cbc973867eefea40c0c1af361bc28

  • SHA512

    452f7149cc2b016bd0b230e0aabb6bcfabb474e3a0da9a906b8a458e42992f2ce30bf4d9c4cd5dbdd0c5fc24d77565b4ae29603faf6fbd71d220dc79017c1a0b

  • SSDEEP

    49152:jl5MTGChZpxtlBBgxchXb/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

      486f31da577a1addb7ac8ba5612de1a2c71cbc973867eefea40c0c1af361bc28N

    • Size

      4.9MB

    • MD5

      674e323ec8e3abd5ffcb9ebbaec24d40

    • SHA1

      2d6725a34476c325783b680e6d994ac62b659409

    • SHA256

      486f31da577a1addb7ac8ba5612de1a2c71cbc973867eefea40c0c1af361bc28

    • SHA512

      452f7149cc2b016bd0b230e0aabb6bcfabb474e3a0da9a906b8a458e42992f2ce30bf4d9c4cd5dbdd0c5fc24d77565b4ae29603faf6fbd71d220dc79017c1a0b

    • SSDEEP

      49152:jl5MTGChZpxtlBBgxchXb/zqP6DUtRgs5q289dAnSz44hnW1XgnYu6fYmPkMSx8E:

    • 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