General

  • Target

    820527243750a28e1729bcc01aad699f_JaffaCakes118

  • Size

    363KB

  • Sample

    240801-2ndcmszfml

  • MD5

    820527243750a28e1729bcc01aad699f

  • SHA1

    125df4c2841b1335669bb07e2c697994db065683

  • SHA256

    b7115feb8e9603503cb99ef451123ed8ca0209358df0fedd1493472777268e64

  • SHA512

    7c8741a9c2f512745baea3948fbeb451f1c400217879403f451cf3818ce0b67edd63b5302a1d98a373c50a29eee4fe034b6b8dd37fec6b0da7d5cf63e7156700

  • SSDEEP

    6144:ucNYS996KFifeVjBpeExgVTFSXFoMc5RhCaL37ydwS:ucW7KEZlPzCy37yl

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

tihe17.zapto.org:8030

Mutex

DC_MUTEX-X1RN242

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    umehiZR0cf0n

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    MicroUpdate

Targets

    • Target

      820527243750a28e1729bcc01aad699f_JaffaCakes118

    • Size

      363KB

    • MD5

      820527243750a28e1729bcc01aad699f

    • SHA1

      125df4c2841b1335669bb07e2c697994db065683

    • SHA256

      b7115feb8e9603503cb99ef451123ed8ca0209358df0fedd1493472777268e64

    • SHA512

      7c8741a9c2f512745baea3948fbeb451f1c400217879403f451cf3818ce0b67edd63b5302a1d98a373c50a29eee4fe034b6b8dd37fec6b0da7d5cf63e7156700

    • SSDEEP

      6144:ucNYS996KFifeVjBpeExgVTFSXFoMc5RhCaL37ydwS:ucW7KEZlPzCy37yl

    • 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

    • Adds policy Run key to start application

    • 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

    • Maps connected drives based on registry

      Disk information is often read in order to detect sandboxing environments.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks