Analysis

  • max time kernel
    151s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220310-en
  • submitted
    23/03/2022, 20:06

General

  • Target
    8ae0ded91f909312c205a612dd9950bf.exe
  • Size 936KB
  • Sample220323-yvgf4aaec9
  • SHA256 f29af471bd6ae227e1937769b3bc2341a5906732374a25137ab6d8715bedc874
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • remcos

Botnet
  • RemoteHost

C2
  • pushpush9810.ddns.net:9810

  • bilibili610003.duckdns.org:9810

Attributes
  • audio_folder

    MicRecords

  • audio_path

    %AppData%

  • 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

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    coscos-W84T8K

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    Remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

  • take_screenshot_title

    notepad;solitaire;

Signatures

  • Remcos

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8ae0ded91f909312c205a612dd9950bf.exe
    "C:\Users\Admin\AppData\Local\Temp\8ae0ded91f909312c205a612dd9950bf.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:1892
    • C:\Windows\SysWOW64\DpiScaling.exe
      C:\Windows\System32\DpiScaling.exe
      2⤵
        PID:4812

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          memory/4812-136-0x0000000072600000-0x000000007267D000-memory.dmp

          memory/4812-137-0x0000000000400000-0x000000000047A000-memory.dmp