General

  • Target

    Bunker_STS_pdf.vbs

  • Size

    13KB

  • Sample

    241209-gfqyjsvnfr

  • MD5

    5773cb94663b755bd1894b40d8c09abb

  • SHA1

    a8f0eeedee12422917be79af4218d6bb12f2d961

  • SHA256

    36b0e1a17b7854904b1e3b3bdd16d94599fd7f3d54dc6fd4250409c737740171

  • SHA512

    d9f6df51417f72069abbc68c837249837185d96cd0b5eb3eae0c836882c5a764a56566dac33012a5fa4cafcb48b97965835816cdfea6c2d94441ec6670b9fa2d

  • SSDEEP

    192:i+twG5TbOTOPDudut5SrhVCEWEkgfH/QYawbIuhKavkpavzesmGKnv2Yng6:iI5TQOPDuI5SPLHI9GvkpLs0vVx

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

154.216.18.214:2404

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-AOD6MB

  • 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

      Bunker_STS_pdf.vbs

    • Size

      13KB

    • MD5

      5773cb94663b755bd1894b40d8c09abb

    • SHA1

      a8f0eeedee12422917be79af4218d6bb12f2d961

    • SHA256

      36b0e1a17b7854904b1e3b3bdd16d94599fd7f3d54dc6fd4250409c737740171

    • SHA512

      d9f6df51417f72069abbc68c837249837185d96cd0b5eb3eae0c836882c5a764a56566dac33012a5fa4cafcb48b97965835816cdfea6c2d94441ec6670b9fa2d

    • SSDEEP

      192:i+twG5TbOTOPDudut5SrhVCEWEkgfH/QYawbIuhKavkpavzesmGKnv2Yng6:iI5TQOPDuI5SPLHI9GvkpLs0vVx

    • 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

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • 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