General

  • Target

    76393f320e41bfa364c5abe6b82d67890679c1a7d621e425f8d1ddeae3fe9a77

  • Size

    922KB

  • Sample

    221124-qa5n7aeg62

  • MD5

    25e1eec118c9b10f0c49b9addb45af5a

  • SHA1

    d3a607dcf6da82e181a90d86da4cf0ae49908956

  • SHA256

    76393f320e41bfa364c5abe6b82d67890679c1a7d621e425f8d1ddeae3fe9a77

  • SHA512

    4e871ae95aba790b00621b5cb46ab289b1dfc42313c926c9f6d81fc2d85f1c66752310f8825d2b6d24a19864652bd9155449756c8a0518c85ce1bb3ad5686560

  • SSDEEP

    24576:kX0hD34ShYVRygOzg5yOT24lbUvNR4THl+Z0X:kEcShYV9MeyA2oM7i+q

Malware Config

Extracted

Family

darkcomet

Botnet

÷èò

C2

46.0.112.29:1604

Mutex

DC_MUTEX-C3QSCC3

Attributes
  • InstallPath

    MSDCSC\Skype.exe

  • gencode

    z1VNQ1AP1Aku

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    Skype

Targets

    • Target

      76393f320e41bfa364c5abe6b82d67890679c1a7d621e425f8d1ddeae3fe9a77

    • Size

      922KB

    • MD5

      25e1eec118c9b10f0c49b9addb45af5a

    • SHA1

      d3a607dcf6da82e181a90d86da4cf0ae49908956

    • SHA256

      76393f320e41bfa364c5abe6b82d67890679c1a7d621e425f8d1ddeae3fe9a77

    • SHA512

      4e871ae95aba790b00621b5cb46ab289b1dfc42313c926c9f6d81fc2d85f1c66752310f8825d2b6d24a19864652bd9155449756c8a0518c85ce1bb3ad5686560

    • SSDEEP

      24576:kX0hD34ShYVRygOzg5yOT24lbUvNR4THl+Z0X:kEcShYV9MeyA2oM7i+q

    • 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.

    • Deletes itself

    • Loads dropped DLL

    • Windows security modification

    • Adds Run key to start application

    • AutoIT Executable

      AutoIT scripts compiled to PE executables.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks