Analysis

  • max time kernel
    10s
  • max time network
    1s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    14-10-2024 13:26

General

  • Target

    remcos_a.exe

  • Size

    197KB

  • MD5

    66f29cbeb1e993ba073fbb4a677fb491

  • SHA1

    19abe4d6cd4fdcbff81ede364f9dd9788cc3df06

  • SHA256

    21375924ebaaebd07f5f183fa9ba19e6dc14eccbec42d9f90f40ad4cf943a539

  • SHA512

    3311b78096042381b8b8f4cf5f0098ec82fe41c218dab1c340be3d5b83c4a923cb5f5d4607760e23e8e075760cab8c1126fcc41145003289b67181c2a58e7e7f

  • SSDEEP

    3072:bDtAK2g8lewoo0nT7e/2Pjohbjs29qBk9fZARr8H4en4H8T7qQdZ6sR6msUZIII:bDtA48lv0nTSVzor8HBnrZZTR6ms

Malware Config

Extracted

Family

remcos

Version

5.1.3 Light

Botnet

RemoteHost

C2

127.0.0.1:2404

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-3GIYIK

  • 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.

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\remcos_a.exe
    "C:\Users\Admin\AppData\Local\Temp\remcos_a.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:2780

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2780-1-0x0000000000475000-0x0000000000476000-memory.dmp

    Filesize

    4KB

  • memory/2780-0-0x0000000000400000-0x000000000047B000-memory.dmp

    Filesize

    492KB

  • memory/2780-2-0x0000000000400000-0x000000000047B000-memory.dmp

    Filesize

    492KB

  • memory/2780-4-0x0000000000475000-0x0000000000476000-memory.dmp

    Filesize

    4KB

  • memory/2780-3-0x0000000000400000-0x000000000047B000-memory.dmp

    Filesize

    492KB