Overview

overview

10

Static

static

1

Customer_ ...pdf.js

windows10-2004-x64

10

Customer_ ...pdf.js

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    5b4075da65dea350823edcbabb694ae134301d9f1af1dc5a073147e7f29af1b6
  • Size 2.7MB
  • Sample261105-e5e68shy8m
  • SHA256 5b4075da65dea350823edcbabb694ae134301d9f1af1dc5a073147e7f29af1b6
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
donutloaderremcosremotehostdiscoveryexecutionloaderpersistencerat

Malware Config

Extracted

Family

  • remcos

Version

  • 7.2.5 Pro

Botnet

  • RemoteHost

C2

  • ja00.duckdns.org:2424

  • jaja00.duckdns.org:2424

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

    yhf-WNJRI0

  • 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
      Customer_ Ref_payment_copy .pdf.JS
    • Size 4.7MB
    • SHA256 37615f5a3c9c90a9002296b925bd562d5eb37891d98f3e70f4bf3c69dc8a077f
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    remotehostdiscoveryexecutiondonutloaderremcosloaderpersistencerat

    • Detects DonutLoader

      loader

    • Family: DonutLoader

      DonutLoader is a position-independent code that enables in-memory execution of VBScript, JScript, EXE, DLL files and dotNET assemblies.

      loaderdonutloader

    • Family: Remcos

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

      ratremcos

    • 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

    • Executes a VBScript file via the Windows Script Host.

      execution
    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks