General

  • Target

    Products details_1.docx.doc

  • Size

    410KB

  • Sample

    240516-krk38adb99

  • MD5

    f155a645b4eabe0b888a878c50d15d6f

  • SHA1

    bb0b7e4b7e1b0dd7e2a1fa4e212444c2257608bc

  • SHA256

    c15de07fb429eb91998849e4d2ae5c0f6f2a4ee67a989040bedb23a3480bc49a

  • SHA512

    9c8288b506d04f647f5883b832528fc72c6dbaa40830391a2a687a5c01e4e55b5e55aa6853849fc3e2ca6cd94dce582a1f108ca048870f7b0bc0be6fede13e07

  • SSDEEP

    6144:O/46IXsfkfhfjf0Q5OBfif1fAfKFO6S951ndPJQf2fJa:OgcfkfhfjfrOBfif1fAfK4h1dPmf2fI

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

deroploo.duckdns.org:2405

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-82GYAJ

  • 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

      Products details_1.docx.doc

    • Size

      410KB

    • MD5

      f155a645b4eabe0b888a878c50d15d6f

    • SHA1

      bb0b7e4b7e1b0dd7e2a1fa4e212444c2257608bc

    • SHA256

      c15de07fb429eb91998849e4d2ae5c0f6f2a4ee67a989040bedb23a3480bc49a

    • SHA512

      9c8288b506d04f647f5883b832528fc72c6dbaa40830391a2a687a5c01e4e55b5e55aa6853849fc3e2ca6cd94dce582a1f108ca048870f7b0bc0be6fede13e07

    • SSDEEP

      6144:O/46IXsfkfhfjf0Q5OBfif1fAfKFO6S951ndPJQf2fJa:OgcfkfhfjfrOBfif1fAfK4h1dPmf2fI

    • Remcos

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

    • NirSoft MailPassView

      Password recovery tool for various email clients

    • NirSoft WebBrowserPassView

      Password recovery tool for various web browsers

    • Nirsoft

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

    • Abuses OpenXML format to download file from external location

    • 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

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks