General

  • Target

    904af9fb7e5bee74577f430af1080585.rtf

  • Size

    97KB

  • Sample

    241013-f5z23svhqn

  • MD5

    904af9fb7e5bee74577f430af1080585

  • SHA1

    71b79e6f053b89985d109d81670f2dce172775ae

  • SHA256

    98bcb2a98c5347e4409349f1605a7883a40a541cffc4aa62bf7c77b5160cdd20

  • SHA512

    bea7087cc00f169433e00f1ca03b07b37eb0a9299ad406e551d840021c47ae29aea0ef5c25cd168bc74812de6395f6c83f40f356e8108d78cbb238bf33455316

  • SSDEEP

    768:czOjyekZVi0QtGJPKrEvK64F5nMn10Me3Ffp8w:HvoetGJid6K5nmW3Fp8w

Malware Config

Extracted

Family

remcos

Botnet

newest

C2

107.173.4.16:2404

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-FI789R

  • 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

      904af9fb7e5bee74577f430af1080585.rtf

    • Size

      97KB

    • MD5

      904af9fb7e5bee74577f430af1080585

    • SHA1

      71b79e6f053b89985d109d81670f2dce172775ae

    • SHA256

      98bcb2a98c5347e4409349f1605a7883a40a541cffc4aa62bf7c77b5160cdd20

    • SHA512

      bea7087cc00f169433e00f1ca03b07b37eb0a9299ad406e551d840021c47ae29aea0ef5c25cd168bc74812de6395f6c83f40f356e8108d78cbb238bf33455316

    • SSDEEP

      768:czOjyekZVi0QtGJPKrEvK64F5nMn10Me3Ffp8w:HvoetGJid6K5nmW3Fp8w

    • Remcos

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

    • 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

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Accesses Microsoft Outlook accounts

    • AutoIT Executable

      AutoIT scripts compiled to PE executables.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks