General

  • Target

    A 413736796·pdf.vbs

  • Size

    73KB

  • Sample

    241001-f8axcsxbme

  • MD5

    3f5e0a8b0d1ac0143d359bcb63171066

  • SHA1

    7f6368b52a021340768f61ae047d88c7e6d4add3

  • SHA256

    8da5ed79da8da8c5521a238f05bb61bd1e48c59fab0bee7758fc11c163142396

  • SHA512

    a2a351604fd741bdb95f74836aad27de590eb96857413da9187071c37cc6efd5b261057cd6bec5b4df94d9dc61d3179d4a8a37a4e23b0d5279ba254e83b3f5b3

  • SSDEEP

    1536:sC1DjneW/+yAxEfH8YQO2+VjuNaU7CGTE4+6GDoQVYf:sC1v/3A+fRVji7CW9dGGf

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

a458386d9.duckdns.org:3256

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • delete_file

    false

  • hide_file

    true

  • hide_keylog_file

    false

  • install_flag

    false

  • keylog_crypt

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-WDQFG0

  • 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

      A 413736796·pdf.vbs

    • Size

      73KB

    • MD5

      3f5e0a8b0d1ac0143d359bcb63171066

    • SHA1

      7f6368b52a021340768f61ae047d88c7e6d4add3

    • SHA256

      8da5ed79da8da8c5521a238f05bb61bd1e48c59fab0bee7758fc11c163142396

    • SHA512

      a2a351604fd741bdb95f74836aad27de590eb96857413da9187071c37cc6efd5b261057cd6bec5b4df94d9dc61d3179d4a8a37a4e23b0d5279ba254e83b3f5b3

    • SSDEEP

      1536:sC1DjneW/+yAxEfH8YQO2+VjuNaU7CGTE4+6GDoQVYf:sC1v/3A+fRVji7CW9dGGf

    • Remcos

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

    • Blocklisted process makes network request

    • Checks computer location settings

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

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Legitimate hosting services abused for malware hosting/C2

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks