General

  • Target

    c24f2fb77a06cdfe4e9c074b1e2accb305b0ad091c1668372cc1f5249612b8b2.exe

  • Size

    4.9MB

  • Sample

    241120-ge4s1sxkaj

  • MD5

    7bcee51d69d6f7f7872dade20a2c5916

  • SHA1

    4ad1278f8368527aa02d08c6ee86da5b22be2cab

  • SHA256

    c24f2fb77a06cdfe4e9c074b1e2accb305b0ad091c1668372cc1f5249612b8b2

  • SHA512

    8da8506093074361776f8b1693a2058fc6775be636034237c8ef7f5a03d422b881a9c8ea047b8d89bc314c649ba0c3bd7a16ac8dcd4c41d788135845bd151e34

  • SSDEEP

    49152:bl5MTGChZpxtlBBgxchXb/zqP6DUtRgs5q289dAnSz44hnW1XgnYu6fYmPkMSx8u:G

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

      c24f2fb77a06cdfe4e9c074b1e2accb305b0ad091c1668372cc1f5249612b8b2.exe

    • Size

      4.9MB

    • MD5

      7bcee51d69d6f7f7872dade20a2c5916

    • SHA1

      4ad1278f8368527aa02d08c6ee86da5b22be2cab

    • SHA256

      c24f2fb77a06cdfe4e9c074b1e2accb305b0ad091c1668372cc1f5249612b8b2

    • SHA512

      8da8506093074361776f8b1693a2058fc6775be636034237c8ef7f5a03d422b881a9c8ea047b8d89bc314c649ba0c3bd7a16ac8dcd4c41d788135845bd151e34

    • SSDEEP

      49152:bl5MTGChZpxtlBBgxchXb/zqP6DUtRgs5q289dAnSz44hnW1XgnYu6fYmPkMSx8u:G

    • 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