General

  • Target

    1982e9b7f36a5bddaac372b2e6fea5cdacbd238bcfb1c548d1184044437488eaN.exe

  • Size

    4.9MB

  • Sample

    241126-sdj8rssmak

  • MD5

    9c9a433ffb088d490ec324f3d76d9520

  • SHA1

    60f30b59520078f280e4ff966d727c1fbea7058a

  • SHA256

    1982e9b7f36a5bddaac372b2e6fea5cdacbd238bcfb1c548d1184044437488ea

  • SHA512

    fe78c7cec8d6e752712912dc54ae71c53bfbadc59577031590c1d4e9756bb3a06a9421cbc94ec71672667db80c97a570df288089904b01f8d26bb79466baaead

  • 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

      1982e9b7f36a5bddaac372b2e6fea5cdacbd238bcfb1c548d1184044437488eaN.exe

    • Size

      4.9MB

    • MD5

      9c9a433ffb088d490ec324f3d76d9520

    • SHA1

      60f30b59520078f280e4ff966d727c1fbea7058a

    • SHA256

      1982e9b7f36a5bddaac372b2e6fea5cdacbd238bcfb1c548d1184044437488ea

    • SHA512

      fe78c7cec8d6e752712912dc54ae71c53bfbadc59577031590c1d4e9756bb3a06a9421cbc94ec71672667db80c97a570df288089904b01f8d26bb79466baaead

    • 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