Analysis

  • max time kernel
    150s
  • max time network
    96s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/07/2024, 17:36

General

  • Target
    cf76f0dfc6fecaee5422a7e0281acc7a9f55c7c52716dba92d6f10622ed275d1.exe
  • Size 2.1MB
  • Sample240714-v6jttashqd
  • SHA256 cf76f0dfc6fecaee5422a7e0281acc7a9f55c7c52716dba92d6f10622ed275d1
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • remcos

Version
  • 4.9.3 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-52SPIJ

  • 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
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cf76f0dfc6fecaee5422a7e0281acc7a9f55c7c52716dba92d6f10622ed275d1.exe
    "C:\Users\Admin\AppData\Local\Temp\cf76f0dfc6fecaee5422a7e0281acc7a9f55c7c52716dba92d6f10622ed275d1.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:2344
    • C:\Users\Admin\AppData\Local\Temp\cf76f0dfc6fecaee5422a7e0281acc7a9f55c7c52716dba92d6f10622ed275d1.exe
      "C:\Users\Admin\AppData\Local\Temp\cf76f0dfc6fecaee5422a7e0281acc7a9f55c7c52716dba92d6f10622ed275d1.exe"
      2⤵
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2924

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/2344-2-0x0000000000400000-0x0000000000625000-memory.dmp

        memory/2344-0-0x0000000000400000-0x0000000000625000-memory.dmp

        memory/2344-4-0x0000000000400000-0x0000000000625000-memory.dmp

        memory/2344-3-0x0000000000400000-0x0000000000625000-memory.dmp

        memory/2344-1-0x0000000000408000-0x0000000000422000-memory.dmp

        memory/2344-7-0x0000000000400000-0x0000000000625000-memory.dmp

        memory/2924-5-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-6-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-8-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-9-0x0000000000400000-0x0000000000625000-memory.dmp

        memory/2924-10-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-11-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-12-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-13-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-14-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-15-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-16-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-17-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-18-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-19-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-20-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-21-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-22-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-23-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-24-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-25-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-26-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-27-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-28-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-29-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-30-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-31-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-32-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-33-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-34-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-35-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-36-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-37-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-38-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-39-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-40-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-41-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-42-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-43-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-44-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-45-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-46-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-47-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-48-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-49-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-50-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-51-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-52-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-53-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-54-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-55-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-56-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-57-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-58-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-59-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-60-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-61-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-62-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-63-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-64-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-65-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-66-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-67-0x00000000000C0000-0x0000000000135000-memory.dmp

        memory/2924-68-0x00000000000C0000-0x0000000000135000-memory.dmp