Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20231023-en
  • resource tags

    arch:x64arch:x86image:win7-20231023-enlocale:en-usos:windows7-x64system
  • submitted
    08/12/2023, 09:22

General

  • Target

    SecuriteInfo.com.Win32.RATX-gen.23971.32281.exe

  • Size

    757KB

  • MD5

    6696d37cf0b9b65fd9fc58934d79c9cb

  • SHA1

    6c75525f455c341e936ec64546fc4d9bfe52ee81

  • SHA256

    2db991b9ae725ec59f9a29654e4c5f8d2bf363662cfa8d271a8692fea4883744

  • SHA512

    b9db5f1832b7a6d046c029204d6061e13b1e4b1d3e1a0117a7f51d03aa08b6a5f97be2036cba93ceb17a4f558c4ddfd580a80185d9c8446818b854ebe1749a18

  • SSDEEP

    12288:HDWMD9ehE+uDneLBQt20dup/20AQBOLdxD4N1fahKDZncwk6pvxT0K0jlyOJN9R4:FeVZ27zZPdnjImBOQXU

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

107.175.229.139:8087

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-IZFV1M

  • 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.

  • NirSoft MailPassView 2 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 2 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 6 IoCs
  • Drops startup file 2 IoCs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 32 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.RATX-gen.23971.32281.exe
    "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.RATX-gen.23971.32281.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3000
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
      "Powershell.exe" -ExecutionPolicy Bypass -command Copy-Item 'C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.RATX-gen.23971.32281.exe' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe'
      2⤵
      • Drops startup file
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2584
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2676
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe /stext "C:\Users\Admin\AppData\Local\Temp\caguopmvj"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:2800
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe /stext "C:\Users\Admin\AppData\Local\Temp\eummpixxxsen"
        3⤵
        • Accesses Microsoft Outlook accounts
        PID:2852
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe /stext "C:\Users\Admin\AppData\Local\Temp\pxrxqairtawsjzm"
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2864

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\ProgramData\remcos\logs.dat

          Filesize

          144B

          MD5

          4332a0f609caccc46bd2ae81dd0916f7

          SHA1

          fa659debbf36207ab86f7a7598e3aeedb2ca3d83

          SHA256

          68d8e65d0f387ae8ec1ed1d290d8bf6b97876b61239e85e8122d6c2bcfd1894a

          SHA512

          fabda691bb44f4a15fe9118fcb2c34df883d12bdf5efb3afdb777d4ca5a1ac20e2c5eddce786aacd2e95ae7b20a3c968df2a0d13ce6c2a800f323a76a86b5a19

        • C:\Users\Admin\AppData\Local\Temp\caguopmvj

          Filesize

          2B

          MD5

          f3b25701fe362ec84616a93a45ce9998

          SHA1

          d62636d8caec13f04e28442a0a6fa1afeb024bbb

          SHA256

          b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

          SHA512

          98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

        • memory/2584-31-0x000000006FBC0000-0x000000007016B000-memory.dmp

          Filesize

          5.7MB

        • memory/2584-7-0x000000006FBC0000-0x000000007016B000-memory.dmp

          Filesize

          5.7MB

        • memory/2584-8-0x0000000001E30000-0x0000000001E70000-memory.dmp

          Filesize

          256KB

        • memory/2584-6-0x000000006FBC0000-0x000000007016B000-memory.dmp

          Filesize

          5.7MB

        • memory/2676-35-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2676-74-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/2676-12-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2676-13-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2676-15-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2676-14-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2676-16-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2676-17-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2676-19-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2676-109-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2676-108-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2676-101-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2676-18-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

          Filesize

          4KB

        • memory/2676-22-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2676-23-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2676-24-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2676-26-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2676-27-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2676-28-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2676-100-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2676-30-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2676-32-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2676-33-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2676-34-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2676-93-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2676-36-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2676-92-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2676-85-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2676-84-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2676-82-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/2676-10-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2676-78-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2676-75-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2676-72-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/2676-73-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/2676-71-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/2676-68-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/2676-11-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2800-54-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/2800-41-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/2800-48-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/2800-65-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/2852-44-0x0000000000400000-0x0000000000457000-memory.dmp

          Filesize

          348KB

        • memory/2852-56-0x0000000000400000-0x0000000000457000-memory.dmp

          Filesize

          348KB

        • memory/2852-76-0x0000000000400000-0x0000000000457000-memory.dmp

          Filesize

          348KB

        • memory/2852-51-0x0000000000400000-0x0000000000457000-memory.dmp

          Filesize

          348KB

        • memory/2864-58-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/2864-59-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/2864-50-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/2864-57-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/2864-60-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/3000-2-0x00000000006C0000-0x000000000076E000-memory.dmp

          Filesize

          696KB

        • memory/3000-0-0x00000000011F0000-0x00000000012B4000-memory.dmp

          Filesize

          784KB

        • memory/3000-1-0x00000000744C0000-0x0000000074BAE000-memory.dmp

          Filesize

          6.9MB

        • memory/3000-21-0x00000000744C0000-0x0000000074BAE000-memory.dmp

          Filesize

          6.9MB

        • memory/3000-9-0x0000000000320000-0x0000000000328000-memory.dmp

          Filesize

          32KB

        • memory/3000-3-0x0000000004AE0000-0x0000000004B20000-memory.dmp

          Filesize

          256KB