General

  • Target

    1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318

  • Size

    283KB

  • Sample

    220725-ajh9jsega6

  • MD5

    9c40dc626ff68bd1b114b266ad83aaaa

  • SHA1

    4852aa302d72519f443bff5fa14ae44bec7183a2

  • SHA256

    1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318

  • SHA512

    c09773f312edf242b4071a9eb42e634db36587ebf53e5430ab95ff1421a327fe7b7f909be03279d65db58a335c3958960a96e29c342f926b90e0d70cf54f93cd

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

127.0.0.1:888

Mutex

DC_MUTEX-7X1Q8Z3

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    6Rm4GrjxWWjW

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    MicroUpdate

Targets

    • Target

      1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318

    • Size

      283KB

    • MD5

      9c40dc626ff68bd1b114b266ad83aaaa

    • SHA1

      4852aa302d72519f443bff5fa14ae44bec7183a2

    • SHA256

      1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318

    • SHA512

      c09773f312edf242b4071a9eb42e634db36587ebf53e5430ab95ff1421a327fe7b7f909be03279d65db58a335c3958960a96e29c342f926b90e0d70cf54f93cd

    • Darkcomet

      DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.

    • Modifies WinLogon for persistence

    • Modifies firewall policy service

    • Modifies security service

    • Windows security bypass

    • Disables RegEdit via registry modification

    • Disables Task Manager via registry modification

    • Executes dropped EXE

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Loads dropped DLL

    • Windows security modification

    • Adds Run key to start application

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Winlogon Helper DLL

1
T1004

Modify Existing Service

2
T1031

Hidden Files and Directories

2
T1158

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

7
T1112

Disabling Security Tools

2
T1089

Hidden Files and Directories

2
T1158

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Tasks