General

  • Target

    FRSSDE.exe

  • Size

    481KB

  • Sample

    241118-s364tsvkcj

  • MD5

    416df385ee8cc5b57c5869cff2142747

  • SHA1

    a79848e3b77e0e995dbc1b87c1a82b00bf4827eb

  • SHA256

    4d4b203f72413a42a31be62977b8a6508e7f04f9192913c432ab456b15fc3004

  • SHA512

    f76e9cb4adbfda277d87ea85473fe4554b77f8da4c0e86b073d31046a3f4cf37a75336eb44fa3d009d20cf28685a41f191148db8b3167524aa46e598eba9bca0

  • SSDEEP

    12288:LuD09AUkNIGBYYv4eK13x13nZHSRVMf139F5wIB7+IwtHwBtVxbesvZDSx+DY:O09AfNIEYsunZvZ19Z6s

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

nextnewupdationsforu.duckdns.org:14645

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

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-EC111K

  • 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

      FRSSDE.exe

    • Size

      481KB

    • MD5

      416df385ee8cc5b57c5869cff2142747

    • SHA1

      a79848e3b77e0e995dbc1b87c1a82b00bf4827eb

    • SHA256

      4d4b203f72413a42a31be62977b8a6508e7f04f9192913c432ab456b15fc3004

    • SHA512

      f76e9cb4adbfda277d87ea85473fe4554b77f8da4c0e86b073d31046a3f4cf37a75336eb44fa3d009d20cf28685a41f191148db8b3167524aa46e598eba9bca0

    • SSDEEP

      12288:LuD09AUkNIGBYYv4eK13x13nZHSRVMf139F5wIB7+IwtHwBtVxbesvZDSx+DY:O09AfNIEYsunZvZ19Z6s

    • 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

    • Uses browser remote debugging

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

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Accesses Microsoft Outlook accounts

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks