General

  • Target

    4c1588420e7a12fe738bc30798c17423931c022447b4a0bdf6f5e706ffaf5f21

  • Size

    4.9MB

  • Sample

    241006-z3l7zswdqq

  • MD5

    85ab5c50c78b5db54a69d9f85c8d07ff

  • SHA1

    112a5c1bf9a479baf32c8196ba4b1bc24b27541e

  • SHA256

    4c1588420e7a12fe738bc30798c17423931c022447b4a0bdf6f5e706ffaf5f21

  • SHA512

    2978fdea829a99e828bff671748a346e075ed4fb597127dba6f99bd23704d740d8d776afe530bbd544d42bf71dbcf328a66dbcd55f48dd25ee2a9cb46878eaa4

  • 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

      4c1588420e7a12fe738bc30798c17423931c022447b4a0bdf6f5e706ffaf5f21

    • Size

      4.9MB

    • MD5

      85ab5c50c78b5db54a69d9f85c8d07ff

    • SHA1

      112a5c1bf9a479baf32c8196ba4b1bc24b27541e

    • SHA256

      4c1588420e7a12fe738bc30798c17423931c022447b4a0bdf6f5e706ffaf5f21

    • SHA512

      2978fdea829a99e828bff671748a346e075ed4fb597127dba6f99bd23704d740d8d776afe530bbd544d42bf71dbcf328a66dbcd55f48dd25ee2a9cb46878eaa4

    • 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