General

  • Target

    67801c6458505230f9b814761cab327585213e9dd9d5f04777142bcb77c5b227N

  • Size

    4.9MB

  • Sample

    241026-rv6yestjay

  • MD5

    a87a3e93eb8f7ee1a70c9b6204930910

  • SHA1

    d5540d781ad24f6ebd68773fc6581a519d8c44a9

  • SHA256

    67801c6458505230f9b814761cab327585213e9dd9d5f04777142bcb77c5b227

  • SHA512

    d8c2ea8d31db9e5f96113057fd1a43d042ca7988081c8f31ba69aef10af91098eaaa6837504c91886452dba5f4c94ba9d6054375b6044409b1ccc1b74907e19d

  • 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

      67801c6458505230f9b814761cab327585213e9dd9d5f04777142bcb77c5b227N

    • Size

      4.9MB

    • MD5

      a87a3e93eb8f7ee1a70c9b6204930910

    • SHA1

      d5540d781ad24f6ebd68773fc6581a519d8c44a9

    • SHA256

      67801c6458505230f9b814761cab327585213e9dd9d5f04777142bcb77c5b227

    • SHA512

      d8c2ea8d31db9e5f96113057fd1a43d042ca7988081c8f31ba69aef10af91098eaaa6837504c91886452dba5f4c94ba9d6054375b6044409b1ccc1b74907e19d

    • 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