General

  • Target

    e193b843eaa1d3a72f26d790c516aa3c660d8f5160e72bb2ac2bc9967b4fb66c

  • Size

    816KB

  • Sample

    221005-fa3jqadda9

  • MD5

    6231527ac785becb1df087dd8fdd2f78

  • SHA1

    f6cf2f90cf448e21cf77aec2cc9ab32a9d495367

  • SHA256

    e193b843eaa1d3a72f26d790c516aa3c660d8f5160e72bb2ac2bc9967b4fb66c

  • SHA512

    6c17f85620c91faf2ffd5c7e3a3d5d2a77550863fbc22ef5455f29269d479bf0a19760e37b0d0da76a199ecde039ba3149b69f1d7ae0feb901d7ca267db23ff3

  • SSDEEP

    12288:VPFR/4veOsqorICokiat1/ZLjYbseoJjy1ndXyeUNGvW:Bz4veOsqorPdh/oroJjqdCeUNGv

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

27th Sept

C2

arttronova23.duckdns.org:4045

Attributes
  • audio_folder

    audio

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    5

  • copy_file

    Microsoft Security Start.exe

  • copy_folder

    Windows Secure Start

  • 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 Health Start

  • take_screenshot_option

    true

  • take_screenshot_time

    5

  • take_screenshot_title

    Username;password;proforma;invoice;notepad

Targets

    • Target

      e193b843eaa1d3a72f26d790c516aa3c660d8f5160e72bb2ac2bc9967b4fb66c

    • Size

      816KB

    • MD5

      6231527ac785becb1df087dd8fdd2f78

    • SHA1

      f6cf2f90cf448e21cf77aec2cc9ab32a9d495367

    • SHA256

      e193b843eaa1d3a72f26d790c516aa3c660d8f5160e72bb2ac2bc9967b4fb66c

    • SHA512

      6c17f85620c91faf2ffd5c7e3a3d5d2a77550863fbc22ef5455f29269d479bf0a19760e37b0d0da76a199ecde039ba3149b69f1d7ae0feb901d7ca267db23ff3

    • SSDEEP

      12288:VPFR/4veOsqorICokiat1/ZLjYbseoJjy1ndXyeUNGvW:Bz4veOsqorPdh/oroJjqdCeUNGv

    • Remcos

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

    • UAC bypass

    • Executes dropped EXE

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Bypass User Account Control

1
T1088

Defense Evasion

Bypass User Account Control

1
T1088

Disabling Security Tools

1
T1089

Modify Registry

4
T1112

Discovery

System Information Discovery

1
T1082

Remote System Discovery

1
T1018

Tasks