Overview

overview

10

Static

static

3

b49d3ac4c3...f3.exe

windows7-x64

10

b49d3ac4c3...f3.exe

windows10-2004-x64

7

Sharing

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General

  • Target

    b49d3ac4c38b436445299032a532e2f3de973e1662a12b526ea8aa074d5bbff3.exe

  • Size

    140KB

  • Sample

    241226-cwqkhavmaq

  • MD5

    30f7acc51821a12ab4eb1cd9a0dcff94

  • SHA1

    06d744b9f8982e4b36896f38f75463100f644bda

  • SHA256

    b49d3ac4c38b436445299032a532e2f3de973e1662a12b526ea8aa074d5bbff3

  • SHA512

    e601feee4fb460ce512ff232f397a003024fdd11c06ecd4181e48c70d1addb13bd969ddb19295aaed2883614bd3eb43546ffa516367eb522cdd2e4baf785c760

  • SSDEEP

    3072:xPd4n/M+WLcilrpgGH/GwY87mVmIXhIHVS7:xP6/M+WLckOBhVmIYI

Score
10/10
remcoshostdiscoverypersistencerat

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

systemcontrol.ddns.net:45000

systemcontrol2.ddns.net:45000
Attributes
  • audio_folder

    audio

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    5

  • copy_file

    OfficeUpgrade.exe

  • copy_folder

    OfficeUpgrade

  • delete_file

    false

  • hide_file

    true

  • hide_keylog_file

    true

  • install_flag

    false

  • install_path

    %AppData%

  • keylog_crypt

    true

  • keylog_file

    Upgrader.dat

  • keylog_flag

    false

  • keylog_folder

    Upgrader

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    req_khauflaoyr

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screens

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    OfficeUpgrade

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      b49d3ac4c38b436445299032a532e2f3de973e1662a12b526ea8aa074d5bbff3.exe

    • Size

      140KB

    • MD5

      30f7acc51821a12ab4eb1cd9a0dcff94

    • SHA1

      06d744b9f8982e4b36896f38f75463100f644bda

    • SHA256

      b49d3ac4c38b436445299032a532e2f3de973e1662a12b526ea8aa074d5bbff3

    • SHA512

      e601feee4fb460ce512ff232f397a003024fdd11c06ecd4181e48c70d1addb13bd969ddb19295aaed2883614bd3eb43546ffa516367eb522cdd2e4baf785c760

    • SSDEEP

      3072:xPd4n/M+WLcilrpgGH/GwY87mVmIXhIHVS7:xP6/M+WLckOBhVmIYI

    Score
    10/10
    remcoshostdiscoverypersistencerat

    • Remcos

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

      ratremcos

    • Remcos family

      remcos

    • 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

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks