Overview

overview

10

Static

static

3

RS8RlKC3V8...df.exe

windows7-x64

10

RS8RlKC3V8...df.exe

windows10-2004-x64

10

Sharing

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General

  • Target
    RS8RlKC3V8acct1190M2K,pdf.exe
  • Size 1.2MB
  • Sample240711-hm3flathnk
  • SHA256 cd1dbeedd93d1c0bf3c76a1e5cd2fd4cf1f0d195226dca32d85757301aba43b0
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
remcosnsppdevasionexecutionpersistencerat

Malware Config

Extracted

Family

  • remcos

Botnet

  • nsppd

C2

  • 75.127.7.188:2404

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    F-11.exe

  • copy_folder

    F-11

  • delete_file

    false

  • hide_file

    true

  • hide_keylog_file

    false

  • install_flag

    false

  • install_path

    %WinDir%\System32

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    MUJ

  • keylog_path

    %WinDir%\System32

  • mouse_option

    false

  • mutex

    Tpn-C0MW43

  • 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
      RS8RlKC3V8acct1190M2K,pdf.exe
    • Size 1.2MB
    • SHA256 cd1dbeedd93d1c0bf3c76a1e5cd2fd4cf1f0d195226dca32d85757301aba43b0
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    remcosnsppdevasionexecutionpersistencerat

    • 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

    • Disables Task Manager via registry modification

      evasion

    • 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

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks