General

  • Target

    LisectAVT_2403002A_136.exe

  • Size

    844KB

  • Sample

    240724-3p1d8sxdqd

  • MD5

    404e164e7c5f003a1ac5ec58ce77a534

  • SHA1

    93fa2afce7ee9c58c046c7307a0c30ffc6cf7834

  • SHA256

    479578f34c0fa25de3528e6146737205931d3f4914d2f4f8f3e4da0be600162c

  • SHA512

    49a87b4745e2a981ce5ace4fdd21b55a9d45232b8f4dd13fb8a77cdb402bd1b41e521c3a6c5336c7ab49b6e91d1ed045c22e3a35a2222e47d551be33a53a409d

  • SSDEEP

    12288:sp4+EpVjZsEpt4Q8gn/pu6JnTzk9Sv+LWK+WGnsVNvlkYkBCdonHi6NQkt8YfhvN:m4Fpl+yD8c/sXwnmYk4HtSkt8WhMUP

Malware Config

Extracted

Family

remcos

Botnet

7272626

C2

windowsserverfebarch.duckdns.org:5841

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    72626-GNX3E4

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    Remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      LisectAVT_2403002A_136.exe

    • Size

      844KB

    • MD5

      404e164e7c5f003a1ac5ec58ce77a534

    • SHA1

      93fa2afce7ee9c58c046c7307a0c30ffc6cf7834

    • SHA256

      479578f34c0fa25de3528e6146737205931d3f4914d2f4f8f3e4da0be600162c

    • SHA512

      49a87b4745e2a981ce5ace4fdd21b55a9d45232b8f4dd13fb8a77cdb402bd1b41e521c3a6c5336c7ab49b6e91d1ed045c22e3a35a2222e47d551be33a53a409d

    • SSDEEP

      12288:sp4+EpVjZsEpt4Q8gn/pu6JnTzk9Sv+LWK+WGnsVNvlkYkBCdonHi6NQkt8YfhvN:m4Fpl+yD8c/sXwnmYk4HtSkt8WhMUP

    • Remcos

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

    • UAC bypass

    • Windows security bypass

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Uses the VBS compiler for execution

    • Windows security modification

    • Adds Run key to start application

    • Checks whether UAC is enabled

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks