General

  • Target

    380901a4d796135abc8a33a11b267aa8647355fa1000d4afeb413f9ec519774d

  • Size

    427KB

  • Sample

    240508-1amtgsag98

  • MD5

    347dd7b659f7f4ce7833cdfd51738e87

  • SHA1

    c9c80fc1556d0e691da88f2da65cd6ba2856d6d4

  • SHA256

    380901a4d796135abc8a33a11b267aa8647355fa1000d4afeb413f9ec519774d

  • SHA512

    22a9d1bba58113b312f4fd1cb6248a2fd2b74a58ac6a78f824ae491811bdf977193c1646da94d0b14f05ad7f97211bf282953952f1886458b450065b6334b541

  • SSDEEP

    6144:HcNYS996KFifeVjBpeExgVTFSXFoMc5RhCaL3790WLJV2k+baoNRL4/:HcW7KEZlPzCy37SyJkk+WoNRL4/

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

0.tcp.eu.ngrok.io:10698

0.tcp.eu.ngrok.io:1604

Mutex

DC_MUTEX-LCL00J7

Attributes
  • InstallPath

    Java\javac.exe

  • gencode

    m9kwXLScPCs9

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    java

Targets

    • Target

      380901a4d796135abc8a33a11b267aa8647355fa1000d4afeb413f9ec519774d

    • Size

      427KB

    • MD5

      347dd7b659f7f4ce7833cdfd51738e87

    • SHA1

      c9c80fc1556d0e691da88f2da65cd6ba2856d6d4

    • SHA256

      380901a4d796135abc8a33a11b267aa8647355fa1000d4afeb413f9ec519774d

    • SHA512

      22a9d1bba58113b312f4fd1cb6248a2fd2b74a58ac6a78f824ae491811bdf977193c1646da94d0b14f05ad7f97211bf282953952f1886458b450065b6334b541

    • SSDEEP

      6144:HcNYS996KFifeVjBpeExgVTFSXFoMc5RhCaL3790WLJV2k+baoNRL4/:HcW7KEZlPzCy37SyJkk+WoNRL4/

    • 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

    • UPX dump on OEP (original entry point)

    • 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.

    • Deletes itself

    • Executes dropped EXE

    • Loads dropped DLL

    • UPX packed file

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

    • Windows security modification

    • Adds Run key to start application

    • Legitimate hosting services abused for malware hosting/C2

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks