Analysis

  • max time kernel
    149s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/05/2024, 01:14

General

  • Target
    95311fc0f7c080fc57155842d9f00c404813f27744c9142dfb785d0bcd410190.exe
  • Size 1.1MB
  • Sample240519-blsfnsae2y
  • SHA256 95311fc0f7c080fc57155842d9f00c404813f27744c9142dfb785d0bcd410190
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • remcos

Botnet
  • RemoteHost

C2
  • 104.194.152.154:3678

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-MI0D28

  • 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.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Script User-Agent 2 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\95311fc0f7c080fc57155842d9f00c404813f27744c9142dfb785d0bcd410190.exe
    "C:\Users\Admin\AppData\Local\Temp\95311fc0f7c080fc57155842d9f00c404813f27744c9142dfb785d0bcd410190.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3444
    • C:\Windows\SysWOW64\extrac32.exe
      C:\\Windows\\System32\\extrac32.exe /C /Y C:\Users\Admin\AppData\Local\Temp\95311fc0f7c080fc57155842d9f00c404813f27744c9142dfb785d0bcd410190.exe C:\\Users\\Public\\Libraries\\Blmpvfff.PIF
      2⤵
        PID:4948
      • C:\Windows\SysWOW64\colorcpl.exe
        C:\Windows\System32\colorcpl.exe
        2⤵
          PID:1968

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            logs.dat

            • Path C:\ProgramData\remcos\logs.dat
            • Size 146B
            • SHA256 23a0ae3fd1a9e87bf13ab9778f86458dadfc3f00a0ea8fe05ea3c9a5399ce57d
            • MD5 SHA1 SHA512

            memory/1968-9-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-13-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-6-0x0000000004620000-0x0000000005620000-memory.dmp

            memory/1968-12-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-10-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-7-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-15-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-16-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-18-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-19-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-21-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-22-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-24-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-25-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-27-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-28-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-29-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-31-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-32-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-34-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-35-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-36-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-38-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-39-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-41-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-42-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-44-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-45-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-47-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-48-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-50-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-51-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-52-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-54-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-55-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-56-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-58-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-59-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-61-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-62-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-64-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-65-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-67-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-68-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-71-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-72-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-74-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-75-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-77-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-78-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-80-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-81-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-83-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-84-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-87-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-88-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-90-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-91-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-93-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-94-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/1968-95-0x000000001C320000-0x000000001C3A2000-memory.dmp

            memory/3444-0-0x0000000000730000-0x0000000000731000-memory.dmp

            memory/3444-5-0x0000000000400000-0x000000000051D000-memory.dmp