Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    08/03/2023, 10:31

General

  • Target
    003930033_pdf.exe
  • Size 2.2MB
  • Sample230308-mkcvdafa7w
  • SHA256 433ec4a66199db2b368a536e9d9656506836fa404560758a59808b0f85311172
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10

Malware Config

Extracted

Family
  • remcos

Botnet
  • RemoteHost

C2
  • 127.0.0.1:59301

  • 10.15.0.19:59301

  • 185.65.134.165:59301

  • 171.22.30.101:59301

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-30GS25

  • 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

Signatures

  • Remcos

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\003930033_pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\003930033_pdf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1228
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      2⤵
      • Suspicious behavior: GetForegroundWindowSpam
      PID:2036

Network

        MITRE ATT&CK Matrix

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/1228-54-0x0000000000B60000-0x0000000000D98000-memory.dmp

        memory/1228-55-0x00000000004F0000-0x0000000000502000-memory.dmp

        memory/1228-56-0x0000000000510000-0x0000000000518000-memory.dmp

        memory/2036-57-0x0000000000400000-0x0000000000480000-memory.dmp

        memory/2036-58-0x0000000000400000-0x0000000000480000-memory.dmp

        memory/2036-59-0x0000000000400000-0x0000000000480000-memory.dmp

        memory/2036-60-0x0000000000400000-0x0000000000480000-memory.dmp

        memory/2036-61-0x0000000000400000-0x0000000000480000-memory.dmp

        memory/2036-62-0x0000000000400000-0x0000000000480000-memory.dmp

        memory/2036-63-0x0000000000400000-0x0000000000480000-memory.dmp

        memory/2036-64-0x0000000000400000-0x0000000000480000-memory.dmp

        memory/2036-65-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        memory/2036-66-0x0000000000400000-0x0000000000480000-memory.dmp

        memory/2036-68-0x0000000000400000-0x0000000000480000-memory.dmp

        memory/2036-70-0x0000000000400000-0x0000000000480000-memory.dmp

        memory/2036-71-0x0000000000400000-0x0000000000480000-memory.dmp

        memory/2036-72-0x0000000000400000-0x0000000000480000-memory.dmp

        memory/2036-73-0x0000000000400000-0x0000000000480000-memory.dmp

        memory/2036-75-0x0000000000400000-0x0000000000480000-memory.dmp

        memory/2036-76-0x0000000000400000-0x0000000000480000-memory.dmp

        memory/2036-78-0x0000000000400000-0x0000000000480000-memory.dmp

        memory/2036-80-0x0000000000400000-0x0000000000480000-memory.dmp

        memory/2036-81-0x0000000000400000-0x0000000000480000-memory.dmp

        memory/2036-82-0x0000000000400000-0x0000000000480000-memory.dmp

        memory/2036-84-0x0000000000400000-0x0000000000480000-memory.dmp

        memory/2036-86-0x0000000000400000-0x0000000000480000-memory.dmp

        memory/2036-88-0x0000000000400000-0x0000000000480000-memory.dmp

        memory/2036-89-0x0000000000400000-0x0000000000480000-memory.dmp

        memory/2036-90-0x0000000000400000-0x0000000000480000-memory.dmp

        memory/2036-92-0x0000000000400000-0x0000000000480000-memory.dmp

        memory/2036-94-0x0000000000400000-0x0000000000480000-memory.dmp