Overview

overview

10

Static

static

3

PO850.exe

windows10-2004-x64

10

PO850.exe

windows11-21h2-x64

10

Sharing

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General

  • Target
    a5a978d350220288c7cc210534e203963198cc114f381a1d378785d101c89307.zip
  • Size 1.2MB
  • Sample260528-wrcbvsh16w
  • SHA256 a5a978d350220288c7cc210534e203963198cc114f381a1d378785d101c89307
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
remcosoputadiscoveryexecutionpersistencerat

Malware Config

Extracted

Family

  • remcos

Version

  • 7.2.4 Pro

Botnet

  • OPUTA

C2

  • throtboy.duckdns.org:2037

  • 195.177.94.115:2037

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-I4C9S0

  • 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
      PO850.exe
    • Size 1.3MB
    • SHA256 6d5324a312a84e503fe2e85ac0ef6273fb48bf590dcecc687b62901867de826b
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    oputadiscoveryexecutionremcospersistencerat

    • 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

    • Checks computer location settings

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

    • Executes dropped EXE

    • Adds Run key to start application

      persistence

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks