Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    15/04/2026, 17:33

General

  • Target
    $PLUGINSDIR/blvitae.dll
  • Size 83KB
  • Sample260415-v411baft7l
  • SHA256 82f3d8e31e90e0250657e38806cff749e68a40676bee6883d9af5e056303c532
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • remcos

Version
  • 4.7.2 Pro

Botnet
  • RemoteHost

C2
  • 208.67.107.123:8780

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-1ZDEV4

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Family: Remcos

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

  • Badlisted process makes network request 7 IoCs

    Network request originating from process or tool commonly abused by malware.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

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

  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\blvitae.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3352
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\blvitae.dll,#1
      2⤵
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:4180
      • C:\Windows\SysWOW64\rundll32.exe
        "C:\Windows\SysWOW64\rundll32.exe"
        3⤵
          PID:5244
        • C:\Windows\SysWOW64\rundll32.exe
          "C:\Windows\SysWOW64\rundll32.exe"
          3⤵
          • Badlisted process makes network request
          • System Location Discovery: System Language Discovery
          • Suspicious use of SetWindowsHookEx
          PID:2768

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          logs.dat

          • Path C:\ProgramData\remcos\logs.dat
          • Size 144B
          • SHA256 8337a72a9995d68f675ea6f880bdb12e39889a890c9abbe2ff8d2886b5386663
          • MD5 SHA1 SHA512 TLSH

          memory/2768-18-0x0000000000400000-0x0000000000481000-memory.dmp

          memory/2768-2-0x0000000000400000-0x0000000000481000-memory.dmp

          memory/2768-4-0x0000000000400000-0x0000000000481000-memory.dmp

          memory/2768-8-0x0000000000400000-0x0000000000481000-memory.dmp

          memory/2768-10-0x0000000000400000-0x0000000000481000-memory.dmp

          memory/2768-9-0x0000000000400000-0x0000000000481000-memory.dmp

          memory/2768-5-0x0000000000400000-0x0000000000481000-memory.dmp

          memory/2768-14-0x0000000000400000-0x0000000000481000-memory.dmp

          memory/2768-13-0x00000000022F0000-0x000000000243D000-memory.dmp

          memory/2768-26-0x0000000000400000-0x0000000000481000-memory.dmp

          memory/2768-3-0x0000000000400000-0x0000000000481000-memory.dmp

          memory/2768-19-0x0000000000400000-0x0000000000481000-memory.dmp

          memory/2768-62-0x0000000000400000-0x0000000000481000-memory.dmp

          memory/2768-27-0x0000000000400000-0x0000000000481000-memory.dmp

          memory/2768-34-0x0000000000400000-0x0000000000481000-memory.dmp

          memory/2768-36-0x0000000000400000-0x0000000000481000-memory.dmp

          memory/2768-43-0x0000000000400000-0x0000000000481000-memory.dmp

          memory/2768-44-0x0000000000400000-0x0000000000481000-memory.dmp

          memory/2768-51-0x0000000000400000-0x0000000000481000-memory.dmp

          memory/2768-52-0x0000000000400000-0x0000000000481000-memory.dmp

          memory/2768-61-0x0000000000400000-0x0000000000481000-memory.dmp

          memory/4180-0-0x0000000000730000-0x0000000000732000-memory.dmp