Overview

overview

10

Static

static

10

33.exe

windows10-2004-x64

10

33.exe

windows10-ltsc_2021-x64

10

33.exe

windows11-21h2-x64

10

33.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    33.exe
  • Size 645KB
  • Sample261029-q3znmscs8y
  • SHA256 84af542630978520d68b710226e7598066b95a0264a26c78af1f54c2f7d0c049
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
remcosbeyeugroupdiscoverypersistenceratsuricata

Malware Config

Extracted

Family

  • remcos

Version

  • 7.3.1 Pro

Botnet

  • BeYeuGroup

C2

  • 8kbetn.net:8080

  • 8kbett.shop:8080

  • 8kbett.icu:8080

  • 8kbett.one:8080

  • 8kbet.hk.com:8080

  • teatoxlife.in:8080

  • 8kbeta5.com:8080

  • toplikes.in:8080

  • themoviezflix.in.net:8080

  • 8kbetmb.com:8080

  • loveletterer.co:8080

  • x41t3.buzz:8080

  • funpunch.in:8080

  • 8kbet1.cc:8080

  • qh88si.com:8080

  • soicauhuyentrang.com:8080

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • audio_record_time

    5

  • connect_delay

    0AssignedName=tele@VietNamReport

  • connect_interval

    5

  • copy_file

    Updater.exe

  • copy_folder

    byg

  • 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-ZYDCL5

  • screenshot_crypt

    false

  • screenshot_flag

    true

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    

  • take_screenshot_option

    true

  • take_screenshot_time

    5

  • take_screenshot_title

    facebook;discord;telegram

Targets

    • Target
      33.exe
    • Size 645KB
    • SHA256 84af542630978520d68b710226e7598066b95a0264a26c78af1f54c2f7d0c049
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    beyeugroupdiscoveryremcospersistenceratsuricata

    • Family: Remcos

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

      ratremcos

    • Suricata alert: REMCOS RAT Malware Outbound C2 Communication

      Network activity triggered a Suricata alert

      suricataremcos

    • Checks computer location settings

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

    • Executes dropped EXE

    • Adds Run key to start application

      persistence
    behavioral1behavioral2behavioral3behavioral4

MITRE ATT&CK Enterprise v16

Tasks