General

  • Target

    b3a40331524394846d2782f1e52e1410ce1681283f8c715373bab73c84fa30ec

  • Size

    964KB

  • Sample

    241119-n7a5qswfqk

  • MD5

    5e0f540fbed81efe0941f8949498c92c

  • SHA1

    d2712dbb06910cd272d57ca6926f815f23dc2cad

  • SHA256

    b3a40331524394846d2782f1e52e1410ce1681283f8c715373bab73c84fa30ec

  • SHA512

    8bdd8fa363883e9243f1266fe7746ad201084303a20c3c74a604587766cf3c89681f940a44b298b7c52b01f389353547031a82936af8898236b5f4214e9f45a6

  • SSDEEP

    24576:oMyNWpDUsl0uHw8LXqBlxZ1QZNAkvpnFDv0eiV:CmAg0uHyjZaP3frC

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

103.67.163.218:2298

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-HLZ36K

  • 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

      b3a40331524394846d2782f1e52e1410ce1681283f8c715373bab73c84fa30ec

    • Size

      964KB

    • MD5

      5e0f540fbed81efe0941f8949498c92c

    • SHA1

      d2712dbb06910cd272d57ca6926f815f23dc2cad

    • SHA256

      b3a40331524394846d2782f1e52e1410ce1681283f8c715373bab73c84fa30ec

    • SHA512

      8bdd8fa363883e9243f1266fe7746ad201084303a20c3c74a604587766cf3c89681f940a44b298b7c52b01f389353547031a82936af8898236b5f4214e9f45a6

    • SSDEEP

      24576:oMyNWpDUsl0uHw8LXqBlxZ1QZNAkvpnFDv0eiV:CmAg0uHyjZaP3frC

    • 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.

    • 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.

    • 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