General

  • Target

    b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775.exe

  • Size

    1.0MB

  • Sample

    250215-eq2fxstrfn

  • MD5

    ec5a7a616e71dd9eaa5453a172a2c952

  • SHA1

    77c2abbfee86dc74dab6b7a13e7d0e3cd1589dec

  • SHA256

    b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775

  • SHA512

    7192ba6bc1353ad5ec5c1b6a19b7e7402cb36fc11e377fd23859c24a9ee28a6767138a726d630b5d201f4dc202a6d02cb1e18845115d7e83eae7808977e3fb9a

  • SSDEEP

    24576:k+wIZTEg2BKLobjEmOTWcN0QCgqYmt9yX8THRr1OBQeb:k+wIZTPBkEWeCgZmt3p1OBzb

Malware Config

Extracted

Family

remcos

Botnet

FEB 09

C2

oktoviyanto.ddns.net:9373

103.186.117.61:9373

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

    Rmc-Z2L02T

  • 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

      b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775.exe

    • Size

      1.0MB

    • MD5

      ec5a7a616e71dd9eaa5453a172a2c952

    • SHA1

      77c2abbfee86dc74dab6b7a13e7d0e3cd1589dec

    • SHA256

      b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775

    • SHA512

      7192ba6bc1353ad5ec5c1b6a19b7e7402cb36fc11e377fd23859c24a9ee28a6767138a726d630b5d201f4dc202a6d02cb1e18845115d7e83eae7808977e3fb9a

    • SSDEEP

      24576:k+wIZTEg2BKLobjEmOTWcN0QCgqYmt9yX8THRr1OBQeb:k+wIZTPBkEWeCgZmt3p1OBzb

    • 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.

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks