General

  • Target

    e744e0aa890a2d9b5e6eed8403cb16f6098baee4a0529b1fabc0644ee4ba6b32.exe

  • Size

    959KB

  • Sample

    241129-esvq6azqgr

  • MD5

    b074e2458b987efec69536a58316d5a6

  • SHA1

    ffebefa18462d47fc8b82abc9069c9fdd6079da9

  • SHA256

    e744e0aa890a2d9b5e6eed8403cb16f6098baee4a0529b1fabc0644ee4ba6b32

  • SHA512

    1f76d7ae0558962781b913b765ff6b92b5f03aa511c6be2f206ff17c361052d4b34a37d46e49447a0860586474c3bc656ed34d9d094b605d06a6ebfbcc0a2422

  • SSDEEP

    24576:YQm35eXO2xQ7nEP9FsGu0ftQbg665Xp3GuD+XjK:jej2ynElFsGu0fsgD5XpTqXj

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

      e744e0aa890a2d9b5e6eed8403cb16f6098baee4a0529b1fabc0644ee4ba6b32.exe

    • Size

      959KB

    • MD5

      b074e2458b987efec69536a58316d5a6

    • SHA1

      ffebefa18462d47fc8b82abc9069c9fdd6079da9

    • SHA256

      e744e0aa890a2d9b5e6eed8403cb16f6098baee4a0529b1fabc0644ee4ba6b32

    • SHA512

      1f76d7ae0558962781b913b765ff6b92b5f03aa511c6be2f206ff17c361052d4b34a37d46e49447a0860586474c3bc656ed34d9d094b605d06a6ebfbcc0a2422

    • SSDEEP

      24576:YQm35eXO2xQ7nEP9FsGu0ftQbg665Xp3GuD+XjK:jej2ynElFsGu0fsgD5XpTqXj

    • 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