General

  • Target

    Arrival Notice.vbs

  • Size

    10KB

  • Sample

    241216-jyt42aspam

  • MD5

    edd6dd584636576b9ed73d01a8dc2d71

  • SHA1

    fa62d8bdc40beecdf037ed9da244730c685716ee

  • SHA256

    afbd22ee9bd00bc71554de232ad2864d09011d0c5b8092b192172db9a58abda2

  • SHA512

    d92a481d431ff3e8e7bd280299f6cb69b01592c14248d9077f32b4b7080d31c1cf0e599e87cfcd5b2ae2817b728c991b86d51d28c8ce8846eb04b2b503b216eb

  • SSDEEP

    192:rz+4vQA3AcB5wF3VtGBpHvFoY0+PcazUpa4N1FPE0Jcct9n72f:v+4vX3AcBKtCPHvOYBP7QMwjECtlQ

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

154.216.17.190:2404

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-3W6OXK

  • 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

      Arrival Notice.vbs

    • Size

      10KB

    • MD5

      edd6dd584636576b9ed73d01a8dc2d71

    • SHA1

      fa62d8bdc40beecdf037ed9da244730c685716ee

    • SHA256

      afbd22ee9bd00bc71554de232ad2864d09011d0c5b8092b192172db9a58abda2

    • SHA512

      d92a481d431ff3e8e7bd280299f6cb69b01592c14248d9077f32b4b7080d31c1cf0e599e87cfcd5b2ae2817b728c991b86d51d28c8ce8846eb04b2b503b216eb

    • SSDEEP

      192:rz+4vQA3AcB5wF3VtGBpHvFoY0+PcazUpa4N1FPE0Jcct9n72f:v+4vX3AcBKtCPHvOYBP7QMwjECtlQ

    • Remcos

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

    • Remcos family

    • 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

    • Checks computer location settings

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

    • Accesses Microsoft Outlook accounts

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks