Overview

overview

10

Static

static

3

MRKU8781602.scr$.exe

windows10-2004-x64

8

MRKU8781602.scr$.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    MRKU8781602.scr$.exe
  • Size 1.1MB
  • Sample261102-hw9ahah16l
  • SHA256 a7ba6ce919e7c888219e3f42b798f79ac69cb2a13fead50bf47808311325b8e3
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
remcoshostcollectioncredential_accessdiscoveryexecutionratstealer

Malware Config

Extracted

Family

  • remcos

Version

  • 7.3.1 Pro

Botnet

  • Host

C2

  • 172.81.131.177:8080

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-8WZJ5D

  • 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
      MRKU8781602.scr$.exe
    • Size 1.1MB
    • SHA256 a7ba6ce919e7c888219e3f42b798f79ac69cb2a13fead50bf47808311325b8e3
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    discoveryexecutionhostcollectioncredential_accessremcosratstealer

    • Family: 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

    • Uses browser remote debugging

      Can be used to control the browser and steal sensitive information such as credentials and session cookies.

      credential_accessstealer

    • Checks computer location settings

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

    • Loads dropped DLL

    • Uses the VBS compiler for execution

    • Accesses Microsoft Outlook profiles

      collection

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks