Analysis

  • max time kernel
    1198s
  • max time network
    1192s
  • platform
    windows10-1703_x64
  • resource
    win10-20240404-en
  • resource tags

    arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
  • submitted
    23-04-2024 17:19

General

  • Target

    Tax Document/TAX DOCUMENTS.pdf.exe

  • Size

    39KB

  • MD5

    f1b14f71252de9ac763dbfbfbfc8c2dc

  • SHA1

    dcc2dcb26c1649887f1d5ae557a000b5fe34bb98

  • SHA256

    796ea1d27ed5825e300c3c9505a87b2445886623235f3e41258de90ba1604cd5

  • SHA512

    636a32fb8a88a542783aa57fe047b6bca47b2bd23b41b3902671c4e9036c6dbb97576be27fd2395a988653e6b63714277873e077519b4a06cdc5f63d3c4224e0

  • SSDEEP

    768:YRQnUhG5bZDOTpkdD82YbQkRFokFWIILPUh:FWObZDOTpk5T6zqAh

Score
10/10

Malware Config

Extracted

Family

remcos

Version

4.9.4 Pro

Botnet

RemoteHost

C2

78.142.18.109:2401

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

    taxinfor

  • mouse_option

    false

  • mutex

    Rmc-4IWHC2

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • Suspicious use of SetWindowsHookEx 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Tax Document\TAX DOCUMENTS.pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\Tax Document\TAX DOCUMENTS.pdf.exe"
    1⤵
    • Suspicious use of SetWindowsHookEx
    PID:4920

Network

MITRE ATT&CK Matrix

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\taxinfor\logs.dat

    Filesize

    144B

    MD5

    1e3ffa1ef4c535056a23585c5c96b4ec

    SHA1

    b3a07778c4224635fd494a6b95579d0d1730e16c

    SHA256

    23efc42bd18a49a9978edacdf78dc90b3c0ed180fc0af40032c2bf575d48decd

    SHA512

    dd6c567180a13850cdc1204b8a8647a50a5657402021f1a1e73d653223a5be25402fee8d0ab29d6b527a4448c7c1ee1310e96a99e05bfad85e0fbb675f74563c

  • memory/4920-20-0x0000000000120000-0x00000000001A0000-memory.dmp

    Filesize

    512KB

  • memory/4920-7-0x0000000000120000-0x00000000001A0000-memory.dmp

    Filesize

    512KB

  • memory/4920-1-0x0000000000060000-0x00000000000D6000-memory.dmp

    Filesize

    472KB

  • memory/4920-6-0x0000000000120000-0x00000000001A0000-memory.dmp

    Filesize

    512KB

  • memory/4920-23-0x0000000000120000-0x00000000001A0000-memory.dmp

    Filesize

    512KB

  • memory/4920-8-0x0000000000120000-0x00000000001A0000-memory.dmp

    Filesize

    512KB

  • memory/4920-9-0x0000000000120000-0x00000000001A0000-memory.dmp

    Filesize

    512KB

  • memory/4920-24-0x0000000000120000-0x00000000001A0000-memory.dmp

    Filesize

    512KB

  • memory/4920-11-0x0000000000120000-0x00000000001A0000-memory.dmp

    Filesize

    512KB

  • memory/4920-13-0x0000000000120000-0x00000000001A0000-memory.dmp

    Filesize

    512KB

  • memory/4920-16-0x00000000025D0000-0x0000000002627000-memory.dmp

    Filesize

    348KB

  • memory/4920-0-0x0000000000120000-0x00000000001A0000-memory.dmp

    Filesize

    512KB

  • memory/4920-4-0x0000000000120000-0x00000000001A0000-memory.dmp

    Filesize

    512KB

  • memory/4920-3-0x0000000000120000-0x00000000001A0000-memory.dmp

    Filesize

    512KB

  • memory/4920-10-0x0000000000120000-0x00000000001A0000-memory.dmp

    Filesize

    512KB

  • memory/4920-34-0x0000000000120000-0x00000000001A0000-memory.dmp

    Filesize

    512KB

  • memory/4920-35-0x0000000000120000-0x00000000001A0000-memory.dmp

    Filesize

    512KB

  • memory/4920-45-0x0000000000120000-0x00000000001A0000-memory.dmp

    Filesize

    512KB

  • memory/4920-46-0x0000000000120000-0x00000000001A0000-memory.dmp

    Filesize

    512KB

  • memory/4920-57-0x0000000000120000-0x00000000001A0000-memory.dmp

    Filesize

    512KB

  • memory/4920-58-0x0000000000120000-0x00000000001A0000-memory.dmp

    Filesize

    512KB

  • memory/4920-68-0x0000000000120000-0x00000000001A0000-memory.dmp

    Filesize

    512KB

  • memory/4920-69-0x0000000000120000-0x00000000001A0000-memory.dmp

    Filesize

    512KB

  • memory/4920-112-0x0000000000120000-0x00000000001A0000-memory.dmp

    Filesize

    512KB

  • memory/4920-123-0x0000000000120000-0x00000000001A0000-memory.dmp

    Filesize

    512KB