General

  • Target

    a63c26783dee7bb580a5cc5267a5b3e84ee9601b776d797175cfd70911135a76.exe

  • Size

    1.1MB

  • Sample

    241129-edmr1ayrdl

  • MD5

    0f7e8e737582613d9ec805ea627bd1ff

  • SHA1

    0a3aa2d8c65e2e03c900b8a148c1ad53f65289fd

  • SHA256

    a63c26783dee7bb580a5cc5267a5b3e84ee9601b776d797175cfd70911135a76

  • SHA512

    b384c1a5eab522bd4058602a1f61411729baef765bf459b5937722e2e974712942111da764bb26a5747b5406453c531c079de3437c2420b5cd5fc8fd802cb8cd

  • SSDEEP

    24576:XCPQ3X6wOmeEXfz0ty9qXo93AkC4rhp3pZ:XC4azmeEvz14Xo95zZ

Malware Config

Extracted

Family

remcos

Botnet

Document

C2

45.138.48.25:3333

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    WinUpdate.exe

  • copy_folder

    WinUpdate

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    true

  • install_path

    %Temp%

  • keylog_crypt

    false

  • keylog_file

    WinUpdat.dat

  • keylog_flag

    false

  • keylog_folder

    WinUpdat

  • mouse_option

    false

  • mutex

    Rmc-E10MWO

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      a63c26783dee7bb580a5cc5267a5b3e84ee9601b776d797175cfd70911135a76.exe

    • Size

      1.1MB

    • MD5

      0f7e8e737582613d9ec805ea627bd1ff

    • SHA1

      0a3aa2d8c65e2e03c900b8a148c1ad53f65289fd

    • SHA256

      a63c26783dee7bb580a5cc5267a5b3e84ee9601b776d797175cfd70911135a76

    • SHA512

      b384c1a5eab522bd4058602a1f61411729baef765bf459b5937722e2e974712942111da764bb26a5747b5406453c531c079de3437c2420b5cd5fc8fd802cb8cd

    • SSDEEP

      24576:XCPQ3X6wOmeEXfz0ty9qXo93AkC4rhp3pZ:XC4azmeEvz14Xo95zZ

    • Remcos

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

    • Remcos family

    • 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

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks