General

  • Target

    Vendor Questionnaire and EOI.exe

  • Size

    610KB

  • Sample

    250131-pene2axldl

  • MD5

    d0627ad0019378cd5a6f23eb4a0f1c8f

  • SHA1

    9626f6c80883b8203b299a1d751e136bf5e16e54

  • SHA256

    f9a75f67ab3b4e7fa308bdac0ab7a6c40f0189fb3d95cfdb455023080a89c517

  • SHA512

    8b6a2d8c71a2232f07c17d6e1e67e34945cbf08dad2426112ace21c4d808fdbf05adc44e78be742067130255af819d97cae93bf3c68f05da5c88777b6a8bbdd8

  • SSDEEP

    12288:p98UWQxHvxTMN0X4YcXGw9CIOmUwuTRQXgz3sK7hvhO7G:paQxG3YWGkCIhUwuTRQwrl9e

Malware Config

Extracted

Family

remcos

Botnet

googlegroupaccount

C2

107.174.65.146:1194

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    googlegroupaccount.exe

  • copy_folder

    googlegroupaccount

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    true

  • install_path

    %Temp%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-1MDOQC

  • 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

      Vendor Questionnaire and EOI.exe

    • Size

      610KB

    • MD5

      d0627ad0019378cd5a6f23eb4a0f1c8f

    • SHA1

      9626f6c80883b8203b299a1d751e136bf5e16e54

    • SHA256

      f9a75f67ab3b4e7fa308bdac0ab7a6c40f0189fb3d95cfdb455023080a89c517

    • SHA512

      8b6a2d8c71a2232f07c17d6e1e67e34945cbf08dad2426112ace21c4d808fdbf05adc44e78be742067130255af819d97cae93bf3c68f05da5c88777b6a8bbdd8

    • SSDEEP

      12288:p98UWQxHvxTMN0X4YcXGw9CIOmUwuTRQXgz3sK7hvhO7G:paQxG3YWGkCIhUwuTRQwrl9e

    • Remcos

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

    • Remcos family

    • Detected Nirsoft tools

      Free utilities often used by attackers which can steal passwords, product keys, etc.

    • NirSoft MailPassView

      Password recovery tool for various email clients

    • NirSoft WebBrowserPassView

      Password recovery tool for various web browsers

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • 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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks