Overview

overview

10

Static

static

3

673d693b0c...61.exe

windows7-x64

10

673d693b0c...61.exe

windows10-2004-x64

10

Sharing

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General

  • Target
    673d693b0c8b68503d64ed15fd863d61.exe
  • Size 1017KB
  • Sample241004-gnlnsssand
  • SHA256 a77754ef6de4a61024e443178b88e50be8b1994f87b323ed7fa5f2f197acdab4
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
remcosirndiscoveryexecutionpersistencerat

Malware Config

Extracted

Family

  • remcos

Botnet

  • IRN

C2

  • irnserv1.ddns.net:4424

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

    true

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-CA8761

  • 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
      673d693b0c8b68503d64ed15fd863d61.exe
    • Size 1017KB
    • SHA256 a77754ef6de4a61024e443178b88e50be8b1994f87b323ed7fa5f2f197acdab4
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    remcosirndiscoveryexecutionpersistencerat

    • Remcos

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

      ratremcos

    • Command and Scripting Interpreter: PowerShell

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

      execution

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks