General

  • Target
    MDU9342434.exe
  • Size 1.1MB
  • Sample240212-pyay2sdd5z
  • SHA256 cbfc10741fb440a5c351bb62a9ffbe13d8fb90304925bee56ac6dd54a8e001ac
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • remcos

Botnet
  • Top

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

    true

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    mqerms.dat

  • keylog_flag

    false

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    alpwovnb-G3F5OR

  • 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
      MDU9342434.exe
    • Size 1.1MB
    • SHA256 cbfc10741fb440a5c351bb62a9ffbe13d8fb90304925bee56ac6dd54a8e001ac
    • MD5 SHA1 SHA512 SSDEEP
    • Guloader,Cloudeye

      A shellcode based downloader first seen in 2020.

    • 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

    • Loads dropped DLL

    • Accesses Microsoft Outlook accounts

    • Adds Run key to start application

    • Legitimate hosting services abused for malware hosting/C2

    • Drops file in System32 directory

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

    • Target
      $PLUGINSDIR/System.dll
    • Size 11KB
    • SHA256 bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb
    • MD5 SHA1 SHA512 SSDEEP
    Score
    3/10

MITRE ATT&CK Enterprise v15

Tasks