General

  • Target

    5cff423e688aae2b72e9e04cf70efc27_JaffaCakes118

  • Size

    756KB

  • Sample

    240520-d8lbzsaf8s

  • MD5

    5cff423e688aae2b72e9e04cf70efc27

  • SHA1

    48757eefb310b301c56b4df3aebe8212fa01b3ef

  • SHA256

    de1bcc33b94e80321b2ac8b1ab7d7d1be3016af522790a6d9e9dbc204dc33486

  • SHA512

    f0b6b3d54ba00bd24872c60d585c94d2ed996c04f30881530c04a20a6e92450965f87b3206ea5de5f6d271f4e82c0f0e50bcf2ebb3e81158108619f7e1db7307

  • SSDEEP

    12288:K9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hVF:GZ1xuVVjfFoynPaVBUR8f+kN10EBJ

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

theluckystrike.ddns.net:1604

theluckystrike.ddns.net:27015

Mutex

DC_MUTEX-1ZSPU9S

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    in9m6QCAfouk

  • install

    true

  • offline_keylogger

    false

  • persistence

    false

  • reg_key

    MicroUpdate

Targets

    • Target

      5cff423e688aae2b72e9e04cf70efc27_JaffaCakes118

    • Size

      756KB

    • MD5

      5cff423e688aae2b72e9e04cf70efc27

    • SHA1

      48757eefb310b301c56b4df3aebe8212fa01b3ef

    • SHA256

      de1bcc33b94e80321b2ac8b1ab7d7d1be3016af522790a6d9e9dbc204dc33486

    • SHA512

      f0b6b3d54ba00bd24872c60d585c94d2ed996c04f30881530c04a20a6e92450965f87b3206ea5de5f6d271f4e82c0f0e50bcf2ebb3e81158108619f7e1db7307

    • SSDEEP

      12288:K9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hVF:GZ1xuVVjfFoynPaVBUR8f+kN10EBJ

    • 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

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Windows security modification

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Defense Evasion

Modify Registry

7
T1112

Impair Defenses

2
T1562

Disable or Modify Tools

2
T1562.001

Hide Artifacts

2
T1564

Hidden Files and Directories

2
T1564.001

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Tasks