Overview

overview

10

Static

static

0936b77139...e0.exe

windows7-x64

10

0936b77139...e0.exe

windows10-2004-x64

10

Sharing

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General

  • Target
    0936b7713936d51076fe77b8c8da04e0.exe
  • Size 846KB
  • Sample221027-kfas4sbef3
  • SHA256 0f4d1dbae1cbb430bd201e362d7325a9a462de60d0fa04de4c3ef871de11248d
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
remcosoct 25th rdpmicrosoftevasionpersistencephishingrattrojan

Malware Config

Extracted

Family

  • remcos

Version

  • 1.7 Pro

Botnet

  • Oct 25th RDP

C2

  • gcrozonav.duckdns.org:4045

Attributes
  • audio_folder

    audio

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    5

  • copy_file

    Microsoft Intel Audio.exe

  • copy_folder

    Audio Microsoft

  • delete_file

    false

  • hide_file

    true

  • hide_keylog_file

    true

  • install_flag

    true

  • install_path

    %WinDir%

  • keylog_crypt

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    Windows Display

  • keylog_path

    %WinDir%

  • mouse_option

    false

  • mutex

    Windows Audio

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screens

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    Windows Security Check

  • take_screenshot_option

    true

  • take_screenshot_time

    5

  • take_screenshot_title

    Username;password;proforma;invoice;notepad

Targets

    • Target
      0936b7713936d51076fe77b8c8da04e0.exe
    • Size 846KB
    • SHA256 0f4d1dbae1cbb430bd201e362d7325a9a462de60d0fa04de4c3ef871de11248d
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    remcosoct 25th rdpevasionpersistencerattrojanmicrosoftphishing

    • Remcos

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

      ratremcos

    • UAC bypass

      evasiontrojan

    • Executes dropped EXE

    • Checks computer location settings

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

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Detected potential entity reuse from brand microsoft.

      phishingmicrosoft

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v6

Tasks