General

  • Target

    INQUIRY46789-MAY20.doc

  • Size

    281KB

  • Sample

    240521-dk8glsff63

  • MD5

    2cb8529988be2a95943fb66e32343a5f

  • SHA1

    42a1f8769bd98bd15e491f48421b58ca48797e2a

  • SHA256

    3e9d09dbdad7f5e9d7245630fbd7208ae2396b62221b84558eaca1d0d9fe1f71

  • SHA512

    b8bb2c88d8b7a9992b52891679ebdca9f55fb38a400482a43850ab033c7d9b9c36a362019d6c3471b5eae7943ea63caa3e7e32a355c590036136ffc0084c8e81

  • SSDEEP

    6144:SwAYwAYwAYwAYwAYwAYwAYwAYwAYwA2tHHi:OBC

Malware Config

Extracted

Family

remcos

Botnet

CEYE

C2

64.188.26.202:1604

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    Vexploio.exe

  • copy_folder

    Vexplo

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    true

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-RXKA3P

  • 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

      INQUIRY46789-MAY20.doc

    • Size

      281KB

    • MD5

      2cb8529988be2a95943fb66e32343a5f

    • SHA1

      42a1f8769bd98bd15e491f48421b58ca48797e2a

    • SHA256

      3e9d09dbdad7f5e9d7245630fbd7208ae2396b62221b84558eaca1d0d9fe1f71

    • SHA512

      b8bb2c88d8b7a9992b52891679ebdca9f55fb38a400482a43850ab033c7d9b9c36a362019d6c3471b5eae7943ea63caa3e7e32a355c590036136ffc0084c8e81

    • SSDEEP

      6144:SwAYwAYwAYwAYwAYwAYwAYwAYwAYwA2tHHi:OBC

    • 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

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • 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 NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks