General

  • Target

    19f67bb78038966f9f1efb51ced0819105088a530a32bed8fb0df7b5d47e3f39

  • Size

    4.9MB

  • Sample

    241127-y2bt7aymb1

  • MD5

    1487016c15b347c8975ccf3fab67a56b

  • SHA1

    7b7135f7ad70842ae1649f7896c1248575a5d421

  • SHA256

    19f67bb78038966f9f1efb51ced0819105088a530a32bed8fb0df7b5d47e3f39

  • SHA512

    cd021c8329cd45bc769da1b0505db2752c6e0eb2c7af8c62bcedd0e8307e6e7963e7301769cc04729e9634ac81eeb6f598e50d5890da4076022bd90dbc4f04c2

  • SSDEEP

    49152:bl5MTGChZpxtlBBgxchXb/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

      19f67bb78038966f9f1efb51ced0819105088a530a32bed8fb0df7b5d47e3f39

    • Size

      4.9MB

    • MD5

      1487016c15b347c8975ccf3fab67a56b

    • SHA1

      7b7135f7ad70842ae1649f7896c1248575a5d421

    • SHA256

      19f67bb78038966f9f1efb51ced0819105088a530a32bed8fb0df7b5d47e3f39

    • SHA512

      cd021c8329cd45bc769da1b0505db2752c6e0eb2c7af8c62bcedd0e8307e6e7963e7301769cc04729e9634ac81eeb6f598e50d5890da4076022bd90dbc4f04c2

    • SSDEEP

      49152:bl5MTGChZpxtlBBgxchXb/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