General

  • Target

    a60f72316633a40d5ab45b035ecd03b7cd0162ce161946cfa2ad86d11fbc9c13.rtf

  • Size

    71KB

  • Sample

    240314-c6d98aah96

  • MD5

    65e41469da1397e3e1c9d70fc29fe2e2

  • SHA1

    b234d40cee175effca9a503c908b408a91c7a7da

  • SHA256

    a60f72316633a40d5ab45b035ecd03b7cd0162ce161946cfa2ad86d11fbc9c13

  • SHA512

    22a75d17446e8b6556a1fb3fdb1f8f4671d3f894a717541c7b51861f1c87c2bdd593b998762b37b1844c9028d9cd79510a0414d87c79f679266b519f44e75c56

  • SSDEEP

    768:W7LVB2IIi5W8rLUAvwqKfGJp8pgpyPjwf7thRrmrPNq4kZ9Y7U3gJnKxBwDwA:mj2IIWWuI4yeJp8pgoP47lmrAz3g2Bql

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

buike0147.duckdns.org:14645

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-1C7Y8W

  • 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

      a60f72316633a40d5ab45b035ecd03b7cd0162ce161946cfa2ad86d11fbc9c13.rtf

    • Size

      71KB

    • MD5

      65e41469da1397e3e1c9d70fc29fe2e2

    • SHA1

      b234d40cee175effca9a503c908b408a91c7a7da

    • SHA256

      a60f72316633a40d5ab45b035ecd03b7cd0162ce161946cfa2ad86d11fbc9c13

    • SHA512

      22a75d17446e8b6556a1fb3fdb1f8f4671d3f894a717541c7b51861f1c87c2bdd593b998762b37b1844c9028d9cd79510a0414d87c79f679266b519f44e75c56

    • SSDEEP

      768:W7LVB2IIi5W8rLUAvwqKfGJp8pgpyPjwf7thRrmrPNq4kZ9Y7U3gJnKxBwDwA:mj2IIWWuI4yeJp8pgoP47lmrAz3g2Bql

    • Remcos

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

    • Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)

    • Detects executables built or packed with MPress PE compressor

    • Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers

    • Detects executables referencing many email and collaboration clients. Observed in information stealers

    • NirSoft MailPassView

      Password recovery tool for various email clients

    • NirSoft WebBrowserPassView

      Password recovery tool for various web browsers

    • Nirsoft

    • Blocklisted process makes network request

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Accesses Microsoft Outlook accounts

    • Adds Run key to start application

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks