General

  • Target

    lnk.lnk

  • Size

    26KB

  • Sample

    240910-x4ztcs1apr

  • MD5

    6dddbea89b9df67a2a3e66e5937f78ff

  • SHA1

    ba62ad24df8a06626919cbf8ada946bd49d2d92e

  • SHA256

    dc465334ab894d0f9247004d29eea52a933cb565c3bb5b538c10e9923f0f5489

  • SHA512

    46345a8e638d22ccc019f3005efc0742ecfb24bbac47f47bbfccb02868b7aa5ef3a8f8483cc0646ab50914fa596c2263bfa5305b01c63a675f0d52657ea2d904

  • SSDEEP

    48:88muavUQSAlHqaBxkn/NQxCHXZTOxkn/vhf/dCZZGXu/dZZIa7x:88y8alHqaBGQxCpSy3uqQ

Malware Config

Extracted

Family

remcos

Botnet

rudolfhess

C2

154.216.17.56:20790

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-3TEAZT

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      lnk.lnk

    • Size

      26KB

    • MD5

      6dddbea89b9df67a2a3e66e5937f78ff

    • SHA1

      ba62ad24df8a06626919cbf8ada946bd49d2d92e

    • SHA256

      dc465334ab894d0f9247004d29eea52a933cb565c3bb5b538c10e9923f0f5489

    • SHA512

      46345a8e638d22ccc019f3005efc0742ecfb24bbac47f47bbfccb02868b7aa5ef3a8f8483cc0646ab50914fa596c2263bfa5305b01c63a675f0d52657ea2d904

    • SSDEEP

      48:88muavUQSAlHqaBxkn/NQxCHXZTOxkn/vhf/dCZZGXu/dZZIa7x:88y8alHqaBGQxCpSy3uqQ

    • Remcos

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

    • Blocklisted process makes network request

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks