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Overview

overview

10

Static

static

3

5946317c0a...a3.exe

windows7-x64

10

5946317c0a...a3.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    5946317c0a7d30b7c3cda5d87f0f20e00704cafa5a42bd888a7a846dbfdb10a3

  • Size

    134KB

  • Sample

    250323-zjd29synw9

  • MD5

    936300f5be3926b1bc5f7c836c497d5e

  • SHA1

    17e0fa9d06006b5247468716b9417f4cd91a6bb4

  • SHA256

    5946317c0a7d30b7c3cda5d87f0f20e00704cafa5a42bd888a7a846dbfdb10a3

  • SHA512

    bb664c9d37e8615486e9aace662580a4c4a344cd0c6bcd1c88d349e749a1ea8260ea56d8f5ea09113aa0f3f81af8669a730a6c2d53ebed08f7680a148e6673ef

  • SSDEEP

    3072:xPd4n/M+WLcilrpgGH/GwY87mVmIXarMW:xP6/M+WLckOBhVmIqrMW

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

      5946317c0a7d30b7c3cda5d87f0f20e00704cafa5a42bd888a7a846dbfdb10a3

    • Size

      134KB

    • MD5

      936300f5be3926b1bc5f7c836c497d5e

    • SHA1

      17e0fa9d06006b5247468716b9417f4cd91a6bb4

    • SHA256

      5946317c0a7d30b7c3cda5d87f0f20e00704cafa5a42bd888a7a846dbfdb10a3

    • SHA512

      bb664c9d37e8615486e9aace662580a4c4a344cd0c6bcd1c88d349e749a1ea8260ea56d8f5ea09113aa0f3f81af8669a730a6c2d53ebed08f7680a148e6673ef

    • SSDEEP

      3072:xPd4n/M+WLcilrpgGH/GwY87mVmIXarMW:xP6/M+WLckOBhVmIqrMW

    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