General

  • Target

    JaffaCakes118_0bc836bdac365cca1d22f21516c20a5f

  • Size

    1.2MB

  • Sample

    250220-phg3esvmgm

  • MD5

    0bc836bdac365cca1d22f21516c20a5f

  • SHA1

    60b78606b7f42648a98676f2ae90ce1f214e8726

  • SHA256

    37be64fcb00ea6019c2267a7bae73dfb25987e027a113012c1cd9d96998e2171

  • SHA512

    703ee58f8cfa051660da96a0b5b5b1608fc3b4a3bef1a5897da4ecd2175ee3424812141ce350ffacb950a185292ef09188cc51974ac96897062f3e4cbdce255c

  • SSDEEP

    24576:26GRQyQy6abbABJowhDBpRN2feA6KfJ7NR2pHZkj/eL3bHYLCmt7mACEm6X:xgQ9aW2tWA6iJ7NR8Sj2L3Emmm6X

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

127.0.0.1:1604

Mutex

DC_MUTEX-F54S21D

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    fXF6y0%2CvjT

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    MicroUpdate

rc4.plain

Targets

    • Target

      JaffaCakes118_0bc836bdac365cca1d22f21516c20a5f

    • Size

      1.2MB

    • MD5

      0bc836bdac365cca1d22f21516c20a5f

    • SHA1

      60b78606b7f42648a98676f2ae90ce1f214e8726

    • SHA256

      37be64fcb00ea6019c2267a7bae73dfb25987e027a113012c1cd9d96998e2171

    • SHA512

      703ee58f8cfa051660da96a0b5b5b1608fc3b4a3bef1a5897da4ecd2175ee3424812141ce350ffacb950a185292ef09188cc51974ac96897062f3e4cbdce255c

    • SSDEEP

      24576:26GRQyQy6abbABJowhDBpRN2feA6KfJ7NR2pHZkj/eL3bHYLCmt7mACEm6X:xgQ9aW2tWA6iJ7NR8Sj2L3Emmm6X

    • Darkcomet

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

    • Darkcomet family

    • Modifies WinLogon for persistence

    • 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

    • Identifies Wine through registry keys

      Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

    • Loads dropped DLL

    • Adds Run key to start application

    • Checks whether UAC is enabled

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks