General

  • Target

    56a8aeac60e96feb740c5b5e1e5d08a33f340094fe2db71af960d4921158b325

  • Size

    1.7MB

  • Sample

    230103-f4cv6aaa39

  • MD5

    f83cb2f595ba590173ecc32fe1a4f957

  • SHA1

    8f70abe57d708789e9c56ad98386c40253224758

  • SHA256

    56a8aeac60e96feb740c5b5e1e5d08a33f340094fe2db71af960d4921158b325

  • SHA512

    ac095b7d37ede5b2d4c31fe2f6a0317726d5a95d90aaba1fa8bb642e608f6c3cb6b2438140729e8d1b56ae8ff3b364db41d0fd12cb19acac267d857edf7c3d6b

  • SSDEEP

    24576:rAOcZGRcaQLzZAZ5WCGXZ2El/5DVvnrjsNNIJhYPZwyI3Tr+Mo5pemHI0YuyqI8u:tBQvZAZ4zJXvMNN8YBdcxo5EmHWqI8u

Malware Config

Extracted

Family

remcos

Botnet

EXPLORER WDs

C2

198.23.207.34:2404

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-563ZPZ

  • screenshot_crypt

    false

  • screenshot_flag

    true

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    PingPongWD

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      56a8aeac60e96feb740c5b5e1e5d08a33f340094fe2db71af960d4921158b325

    • Size

      1.7MB

    • MD5

      f83cb2f595ba590173ecc32fe1a4f957

    • SHA1

      8f70abe57d708789e9c56ad98386c40253224758

    • SHA256

      56a8aeac60e96feb740c5b5e1e5d08a33f340094fe2db71af960d4921158b325

    • SHA512

      ac095b7d37ede5b2d4c31fe2f6a0317726d5a95d90aaba1fa8bb642e608f6c3cb6b2438140729e8d1b56ae8ff3b364db41d0fd12cb19acac267d857edf7c3d6b

    • SSDEEP

      24576:rAOcZGRcaQLzZAZ5WCGXZ2El/5DVvnrjsNNIJhYPZwyI3Tr+Mo5pemHI0YuyqI8u:tBQvZAZ4zJXvMNN8YBdcxo5EmHWqI8u

    • Remcos

      Remcos is a closed-source remote control and surveillance software.

    • UAC bypass

    • Vjw0rm

      Vjw0rm is a remote access trojan written in JavaScript.

    • Blocklisted process makes network request

    • Disables Task Manager via registry modification

    • Executes dropped EXE

    • Checks computer location settings

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

    • Drops startup file

    • Loads dropped DLL

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks