General

  • Target

    29112024_0124_A1_racun_11-2024�pdf.vbs.zip

  • Size

    19KB

  • Sample

    241129-bskz6sxphs

  • MD5

    bd727fb1a8818b23ad409f52143fae28

  • SHA1

    2599145540391a2c6cfaa3b326c517ed49abc4be

  • SHA256

    473e499898c19aaffee3f27962c2395b36ade8e750f58f20d09c1e9e5bf2bfc2

  • SHA512

    b6b213518ab60cc7b626d320d24fd77c06b52989f4dcc62d989752f0fccc533b7122d8b537aa2e846ea4c5200ab8d14c654e5201ac95cd67d5f0bf54e80f9b96

  • SSDEEP

    384:78jbSGXTAMVqxrfUBCeeCd7OjaI+j+nEw8gg8P4pnH+Y:78/SuANxrfUBCuaJZN8XGSnh

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

8766e34g8.duckdns.org:3782

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • 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

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-93TSMD

  • 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

      A1_racun_11-2024·pdf.vbs

    • Size

      33KB

    • MD5

      f504f2da583147ba689b230b21f1e8d3

    • SHA1

      50db98c2c533c4b8d253e05341ce99245e6c9af2

    • SHA256

      9f76359976c222dd3a0f75b05b171711f88f60105f2a285dacd3cd122fb56794

    • SHA512

      8b2d7844ea1400316c79d0055039e977eed7336fe7f387c8c2931d8437cebbae3af75431d16c93eeffcdd45ffe1cdc8b3578afe8da008f386dd26eb106545b13

    • SSDEEP

      768:VxCasOdkFIouoA9wVI5XULTNTNk3hEC9cjhZrE0XYfONFZqMVVasDwrqqX:HCasfILrxaOI/J8sDw2Q

    • Remcos

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

    • Remcos family

    • UAC bypass

    • Detected Nirsoft tools

      Free utilities often used by attackers which can steal passwords, product keys, etc.

    • NirSoft MailPassView

      Password recovery tool for various email clients

    • NirSoft WebBrowserPassView

      Password recovery tool for various web browsers

    • Blocklisted process makes network request

    • Uses browser remote debugging

      Can be used control the browser and steal sensitive information such as credentials and session cookies.

    • Checks computer location settings

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

    • Accesses Microsoft Outlook accounts

    • Adds Run key to start application

    • Legitimate hosting services abused for malware hosting/C2

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks