General

  • Target

    9f3be654b66c0d2f69326d56405f0c97fa726f99f6e1232069effdc0e29e2f29.exe

  • Size

    1.2MB

  • Sample

    241125-mrr8mssngs

  • MD5

    cb211312ecaf139580c6b4fecd6a1e4a

  • SHA1

    b2ff0aa60240573c2bce78f09cbd765e457a763c

  • SHA256

    9f3be654b66c0d2f69326d56405f0c97fa726f99f6e1232069effdc0e29e2f29

  • SHA512

    121f5a01cc6603d1025bd4f48673760764d2f37481592cb81cf6f8c7007f939f05571956c173de36ad8bc5350fefc0c6a6121c1ff283f967a3184edc7e8e21b6

  • SSDEEP

    24576:RYdgfvzAKzxWCC9vSA6GRdsttHVqowvVpBdlvlOUq:rzAcWFt96ydyQow5dldnq

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

212.162.149.226:9285

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    AppUpdate

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    true

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-VCJ8ZS

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    AppUpdate

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      9f3be654b66c0d2f69326d56405f0c97fa726f99f6e1232069effdc0e29e2f29.exe

    • Size

      1.2MB

    • MD5

      cb211312ecaf139580c6b4fecd6a1e4a

    • SHA1

      b2ff0aa60240573c2bce78f09cbd765e457a763c

    • SHA256

      9f3be654b66c0d2f69326d56405f0c97fa726f99f6e1232069effdc0e29e2f29

    • SHA512

      121f5a01cc6603d1025bd4f48673760764d2f37481592cb81cf6f8c7007f939f05571956c173de36ad8bc5350fefc0c6a6121c1ff283f967a3184edc7e8e21b6

    • SSDEEP

      24576:RYdgfvzAKzxWCC9vSA6GRdsttHVqowvVpBdlvlOUq:rzAcWFt96ydyQow5dldnq

    • 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

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Accesses Microsoft Outlook accounts

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks