General

  • Target

    456d1b550633ca213dad95d30642164a98ba2b7ace5689daa7c0dab25a928a30

  • Size

    4.9MB

  • Sample

    241202-z89v8szjar

  • MD5

    bc6d8c1824fbce3832a86042be6ce8ec

  • SHA1

    5c750a20d9ddeb5be64ba89d220a8657adbce18b

  • SHA256

    456d1b550633ca213dad95d30642164a98ba2b7ace5689daa7c0dab25a928a30

  • SHA512

    abdc44b1d6694dea890128229b6bab2dbddd8bbf34d4413afefa84147f91b8dc855b6797d41505842fc181fa09b08cb79abaa720c23ceb1f06dd36a3e7676292

  • 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

      456d1b550633ca213dad95d30642164a98ba2b7ace5689daa7c0dab25a928a30

    • Size

      4.9MB

    • MD5

      bc6d8c1824fbce3832a86042be6ce8ec

    • SHA1

      5c750a20d9ddeb5be64ba89d220a8657adbce18b

    • SHA256

      456d1b550633ca213dad95d30642164a98ba2b7ace5689daa7c0dab25a928a30

    • SHA512

      abdc44b1d6694dea890128229b6bab2dbddd8bbf34d4413afefa84147f91b8dc855b6797d41505842fc181fa09b08cb79abaa720c23ceb1f06dd36a3e7676292

    • SSDEEP

      49152:jl5MTGChZpxtlBBgxchXb/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