General

  • Target

    24eff6797c0f6a3cc5399d94e03039212e18c33cd698e19ad312a3a7171e1945N

  • Size

    4.9MB

  • Sample

    240930-fy3jmatfqf

  • MD5

    d8d7c64dcdd9a4cd64ba109c53e2ad60

  • SHA1

    f09ef22d84d9d1dfafbb921e0c96d561a980988d

  • SHA256

    24eff6797c0f6a3cc5399d94e03039212e18c33cd698e19ad312a3a7171e1945

  • SHA512

    16840d35e62c73b271f29a89b90b4c2df6d976d39cdcc9f06b6f0f796168eddc8359642ee28ef64ff8513d9e13cefeb2c1c847927d3ba7bdbbc350813439041f

  • 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

      24eff6797c0f6a3cc5399d94e03039212e18c33cd698e19ad312a3a7171e1945N

    • Size

      4.9MB

    • MD5

      d8d7c64dcdd9a4cd64ba109c53e2ad60

    • SHA1

      f09ef22d84d9d1dfafbb921e0c96d561a980988d

    • SHA256

      24eff6797c0f6a3cc5399d94e03039212e18c33cd698e19ad312a3a7171e1945

    • SHA512

      16840d35e62c73b271f29a89b90b4c2df6d976d39cdcc9f06b6f0f796168eddc8359642ee28ef64ff8513d9e13cefeb2c1c847927d3ba7bdbbc350813439041f

    • SSDEEP

      49152:Dl5MTGChZpxtlBBgxchXb/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