General

  • Target

    c70cd9f4166ce251a72ae7c176630f6deb17b1dd74854769a381102e77a35179

  • Size

    4.9MB

  • Sample

    241212-da98fssnap

  • MD5

    8e81319277a614e4bdedc32b6b547cf1

  • SHA1

    0804063c7b3af88bec63b02986c1437e576deede

  • SHA256

    c70cd9f4166ce251a72ae7c176630f6deb17b1dd74854769a381102e77a35179

  • SHA512

    a0326ac3aecbf5c5b1b237175c3e09f393cf394eea9824faa66680a154c7c8ad574f4ec63307e7f89d90ed1172841c282220fdd049e79991718521819822f2ff

  • 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

      c70cd9f4166ce251a72ae7c176630f6deb17b1dd74854769a381102e77a35179

    • Size

      4.9MB

    • MD5

      8e81319277a614e4bdedc32b6b547cf1

    • SHA1

      0804063c7b3af88bec63b02986c1437e576deede

    • SHA256

      c70cd9f4166ce251a72ae7c176630f6deb17b1dd74854769a381102e77a35179

    • SHA512

      a0326ac3aecbf5c5b1b237175c3e09f393cf394eea9824faa66680a154c7c8ad574f4ec63307e7f89d90ed1172841c282220fdd049e79991718521819822f2ff

    • 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