Analysis

  • max time kernel
    150s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20231020-en
  • resource tags

    arch:x64arch:x86image:win7-20231020-enlocale:en-usos:windows7-x64system
  • submitted
    08/12/2023, 09:23

General

  • Target

    SecuriteInfo.com.Win32.RATX-gen.21340.24792.exe

  • Size

    757KB

  • MD5

    49eca8d1b29bfaec20599239db6f10da

  • SHA1

    ee605018797e3a9408e24b7ec0767ef5e096ac16

  • SHA256

    dfd724316cb0edbf1212cbf5e71f007d22b7a38e7860d96d4d4bedf17eaa85ea

  • SHA512

    a0d1d7910314cc76bdfa46b6f8cdc9909d850f7fe320be943c16bb6da86b213b23148b331626492a07fedda1932e9d09d4fd10faeb00171e43cdd801cfb71220

  • SSDEEP

    12288:HDWMD9ehE+uDneLBQt20dup/20AQBOLdxD4N1fahKDwancwk6pvxT0K0jlyOJN9I:FefZ27zZPdnjImBOQX

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 7 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.21340.24792.exe
    "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.RATX-gen.21340.24792.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:844
    • 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.21340.24792.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:2088
    • 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:2660
      • 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\htcfcicix"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:1044
      • 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\svhydbnjtnoj"
        3⤵
        • Accesses Microsoft Outlook accounts
        PID:672
      • 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\cpnjdtxdhwgnprp"
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1252

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\ProgramData\remcos\logs.dat

          Filesize

          144B

          MD5

          0a52517ec4b1073b9e77c9be751d5314

          SHA1

          af881a778d2c2b2b587f1702754867b049908a52

          SHA256

          bb3f8d536491ddc4030d97c0e9c094d5c5a6012cfaa17164a2e5cd84f30d453f

          SHA512

          86d19f07e842dee7c7f7abe7812f4ad5df3efd64b351295f24509dd7bcecd2d9cde828cc6411c4072b500072900f5f685ba78f96969e60fc8539c8136dbb5b78

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

          Filesize

          2B

          MD5

          f3b25701fe362ec84616a93a45ce9998

          SHA1

          d62636d8caec13f04e28442a0a6fa1afeb024bbb

          SHA256

          b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

          SHA512

          98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

        • memory/672-54-0x0000000000400000-0x0000000000457000-memory.dmp

          Filesize

          348KB

        • memory/672-51-0x0000000000400000-0x0000000000457000-memory.dmp

          Filesize

          348KB

        • memory/672-64-0x0000000000400000-0x0000000000457000-memory.dmp

          Filesize

          348KB

        • memory/672-45-0x0000000000400000-0x0000000000457000-memory.dmp

          Filesize

          348KB

        • memory/844-1-0x0000000074D60000-0x000000007544E000-memory.dmp

          Filesize

          6.9MB

        • memory/844-0-0x0000000000F90000-0x0000000001054000-memory.dmp

          Filesize

          784KB

        • memory/844-9-0x0000000000500000-0x0000000000508000-memory.dmp

          Filesize

          32KB

        • memory/844-2-0x0000000004A70000-0x0000000004AB0000-memory.dmp

          Filesize

          256KB

        • memory/844-22-0x0000000074D60000-0x000000007544E000-memory.dmp

          Filesize

          6.9MB

        • memory/844-3-0x0000000004730000-0x00000000047DE000-memory.dmp

          Filesize

          696KB

        • memory/1044-60-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/1044-49-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/1044-44-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/1044-48-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/1044-40-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/1044-38-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

          Filesize

          4KB

        • memory/1252-76-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/1252-69-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/1252-73-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/1252-63-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/1252-53-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/2088-35-0x0000000070440000-0x00000000709EB000-memory.dmp

          Filesize

          5.7MB

        • memory/2088-6-0x0000000070440000-0x00000000709EB000-memory.dmp

          Filesize

          5.7MB

        • memory/2088-7-0x0000000070440000-0x00000000709EB000-memory.dmp

          Filesize

          5.7MB

        • memory/2088-8-0x0000000002260000-0x00000000022A0000-memory.dmp

          Filesize

          256KB

        • memory/2088-10-0x0000000002260000-0x00000000022A0000-memory.dmp

          Filesize

          256KB

        • memory/2660-11-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2660-27-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2660-32-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2660-37-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2660-19-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

          Filesize

          4KB

        • memory/2660-18-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2660-17-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2660-16-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2660-15-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2660-14-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2660-13-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2660-31-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2660-12-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2660-20-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2660-30-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2660-65-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/2660-29-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2660-28-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2660-70-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2660-33-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2660-25-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2660-75-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/2660-74-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2660-72-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2660-71-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/2660-24-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2660-68-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/2660-79-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2660-23-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2660-84-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2660-85-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2660-92-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2660-93-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2660-100-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2660-101-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2660-108-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2660-109-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB