General

  • Target

    Backdoor.exe

  • Size

    36KB

  • Sample

    240930-xazw9stdqh

  • MD5

    7adbf0695e6b3744e4f800c4d5ea9302

  • SHA1

    c64d7721fae66e49c9e88a6e5effcc0ca9501d37

  • SHA256

    e639fcadaec03de9703201cd5ed26ee2bb56a698c49e662dd7b6edab6accbe69

  • SHA512

    719bd2eecccd929eac4faf3c121940548a8e732695e0bd890f97705cbb0d56b2f65553b822b20e48aaefa58d975ea1a6d70b5fffe65ae54595d14a8d00012c8b

  • SSDEEP

    768:uNnmZ/8vPlLUdhfJ8v6utFpVsOHjPgpG5o7D11ar1:Anwu4DejVdiG5ysr

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

192.168.200.176:2404

Attributes
  • audio_folder

    audio

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    5

  • copy_file

    remcos.exe

  • copy_folder

    remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    true

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    remcos_bzblukwtnxokphw

  • screenshot_crypt

    false

  • screenshot_flag

    true

  • screenshot_folder

    Screens

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      Backdoor.exe

    • Size

      36KB

    • MD5

      7adbf0695e6b3744e4f800c4d5ea9302

    • SHA1

      c64d7721fae66e49c9e88a6e5effcc0ca9501d37

    • SHA256

      e639fcadaec03de9703201cd5ed26ee2bb56a698c49e662dd7b6edab6accbe69

    • SHA512

      719bd2eecccd929eac4faf3c121940548a8e732695e0bd890f97705cbb0d56b2f65553b822b20e48aaefa58d975ea1a6d70b5fffe65ae54595d14a8d00012c8b

    • SSDEEP

      768:uNnmZ/8vPlLUdhfJ8v6utFpVsOHjPgpG5o7D11ar1:Anwu4DejVdiG5ysr

    • Modifies WinLogon for persistence

    • Remcos

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

    • Adds policy Run key to start application

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Modifies WinLogon

MITRE ATT&CK Enterprise v15

Tasks