General

  • Target

    INVO98655678900OO.jar

  • Size

    754KB

  • Sample

    231213-psby6aebd2

  • MD5

    d04502b7c4ff2f549189318b363705ed

  • SHA1

    f3cd0322f5e09508cb5bbceea01a382b2478e1c4

  • SHA256

    d5da36a2627eebc1118e8b433f42924d413e5d03ee0c1ea4ccb03aac1f2ef5c7

  • SHA512

    7a3757f88b8f18198d86c3f7d0d9cfccca7ad1000dc26a37f403f6b7e982ba954e6e478a54bc9d4e8df4e4a6910451dd6a6d26862d67068d06ae15e90816d873

  • SSDEEP

    12288:W276AJLnNCm/4xFd8vHYO2lrzeDJaLl6k6C4zaBA4Yv8vHYO2lrzeDJaLl6k6C4F:W279JLnWxfsYO2lrkaR6kr4zsAVsYO2O

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

107.175.229.139:8087

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-IZFV1M

  • 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

      INVO98655678900OO.jar

    • Size

      754KB

    • MD5

      d04502b7c4ff2f549189318b363705ed

    • SHA1

      f3cd0322f5e09508cb5bbceea01a382b2478e1c4

    • SHA256

      d5da36a2627eebc1118e8b433f42924d413e5d03ee0c1ea4ccb03aac1f2ef5c7

    • SHA512

      7a3757f88b8f18198d86c3f7d0d9cfccca7ad1000dc26a37f403f6b7e982ba954e6e478a54bc9d4e8df4e4a6910451dd6a6d26862d67068d06ae15e90816d873

    • SSDEEP

      12288:W276AJLnNCm/4xFd8vHYO2lrzeDJaLl6k6C4zaBA4Yv8vHYO2lrzeDJaLl6k6C4F:W279JLnWxfsYO2lrkaR6kr4zsAVsYO2O

    • Remcos

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

    • NirSoft MailPassView

      Password recovery tool for various email clients

    • NirSoft WebBrowserPassView

      Password recovery tool for various web browsers

    • Nirsoft

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies file permissions

    • Reads user/profile data of web browsers

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

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Accesses Microsoft Outlook accounts

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks