Analysis

  • max time kernel
    149s
  • max time network
    139s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/10/2024, 09:03

General

  • Target

    16.exe

  • Size

    469KB

  • MD5

    7d44c4da90227ff04873e74604d4b51b

  • SHA1

    60d4bc726400f4ddd83ddd36c9bc3882ab3eba9c

  • SHA256

    9a9adf67ee1043f43eb437e10d63505051fb56c33c741879dcbcb98c78885e76

  • SHA512

    03f2a600937a7535515f377c9a10f508061af0a1d5ec932acf85de901fcaa43c2a6b2384dbff39261b40ccd62fa57e658d96a4f85ba415eb5de93c80201d9a81

  • SSDEEP

    12288:Wmnk7iLJbpIpiRL6I2WhSKQ9ZsfZQSyn9:uiLJbpI7I2WhQqZ7y9

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

core-hook.gl.at.ply.gg:7242

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    scvhost.exe

  • copy_folder

    files

  • delete_file

    true

  • hide_file

    true

  • hide_keylog_file

    false

  • install_flag

    true

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-6ANS5G

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    scvhost

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • UAC bypass 3 TTPs 3 IoCs
  • Detected Nirsoft tools 3 IoCs

    Free utilities often used by attackers which can steal passwords, product keys, etc.

  • NirSoft MailPassView 1 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 1 IoCs

    Password recovery tool for various web browsers

  • Adds policy Run key to start application 2 TTPs 6 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 6 IoCs
  • Suspicious use of SetThreadContext 5 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 14 IoCs

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

  • Modifies registry class 1 IoCs
  • Modifies registry key 1 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: MapViewOfSection 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 50 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\16.exe
    "C:\Users\Admin\AppData\Local\Temp\16.exe"
    1⤵
    • Adds policy Run key to start application
    • Checks computer location settings
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:3896
    • C:\Windows\SysWOW64\cmd.exe
      /k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3780
      • C:\Windows\SysWOW64\reg.exe
        C:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
        3⤵
        • UAC bypass
        • System Location Discovery: System Language Discovery
        • Modifies registry key
        PID:3676
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
      2⤵
      • Checks computer location settings
      • Deletes itself
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:984
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c "C:\ProgramData\files\scvhost.exe"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2924
        • C:\ProgramData\files\scvhost.exe
          C:\ProgramData\files\scvhost.exe
          4⤵
          • Adds policy Run key to start application
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of WriteProcessMemory
          PID:212
          • C:\Windows\SysWOW64\cmd.exe
            /k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
            5⤵
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:2628
            • C:\Windows\SysWOW64\reg.exe
              C:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
              6⤵
              • UAC bypass
              • System Location Discovery: System Language Discovery
              • Modifies registry key
              PID:2320
          • \??\c:\program files (x86)\internet explorer\iexplore.exe
            "c:\program files (x86)\internet explorer\iexplore.exe"
            5⤵
            • Adds policy Run key to start application
            • Adds Run key to start application
            • Suspicious use of SetThreadContext
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of WriteProcessMemory
            PID:3492
            • C:\Windows\SysWOW64\cmd.exe
              /k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
              6⤵
              • System Location Discovery: System Language Discovery
              • Suspicious use of WriteProcessMemory
              PID:116
              • C:\Windows\SysWOW64\reg.exe
                C:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
                7⤵
                • UAC bypass
                • System Location Discovery: System Language Discovery
                • Modifies registry key
                PID:3300
            • C:\Windows\SysWOW64\svchost.exe
              svchost.exe
              6⤵
                PID:880
              • \??\c:\program files (x86)\internet explorer\iexplore.exe
                "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\oembfzbdpjjrynmsldgoxlbrupwwwsr"
                6⤵
                • System Location Discovery: System Language Discovery
                • Suspicious behavior: EnumeratesProcesses
                PID:4932
              • \??\c:\program files (x86)\internet explorer\iexplore.exe
                "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\ygzmfslfdrbwatiwuntqiqoivvgfxvhhvg"
                6⤵
                • Accesses Microsoft Outlook accounts
                • System Location Discovery: System Language Discovery
                PID:3592
              • \??\c:\program files (x86)\internet explorer\iexplore.exe
                "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\bafegkw"
                6⤵
                  PID:4476
                • \??\c:\program files (x86)\internet explorer\iexplore.exe
                  "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\bafegkw"
                  6⤵
                  • System Location Discovery: System Language Discovery
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  PID:3032

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\ProgramData\files\scvhost.exe

        Filesize

        469KB

        MD5

        7d44c4da90227ff04873e74604d4b51b

        SHA1

        60d4bc726400f4ddd83ddd36c9bc3882ab3eba9c

        SHA256

        9a9adf67ee1043f43eb437e10d63505051fb56c33c741879dcbcb98c78885e76

        SHA512

        03f2a600937a7535515f377c9a10f508061af0a1d5ec932acf85de901fcaa43c2a6b2384dbff39261b40ccd62fa57e658d96a4f85ba415eb5de93c80201d9a81

      • C:\Users\Admin\AppData\Local\Temp\install.vbs

        Filesize

        502B

        MD5

        12d2f0c2d06fcde34f02a0a7b7721550

        SHA1

        8e6ade177fb641109b11112a9732a04c6f7a6edd

        SHA256

        20c041a869983dfe030f6c6228da59ee24219b7f2ddf23a19c2b6aaa9f315ef8

        SHA512

        5351c395db1d4593e6688363dca9ef56c5dc1285294cdbbaf90d26763a7dae2a857dd1a02e041211236772e7591cacfe35785e611cc8370e42ae0874cfc5e3a7

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

        Filesize

        4KB

        MD5

        57509a6a6267f17bef5e5da8b1df8829

        SHA1

        0886741be12c4e6dd24688df7b9568e91b2fc2aa

        SHA256

        4d50e4b2ee7b25d6a88dea6a28503975ca95f98e6e72fcd1ee754d016df3ed3d

        SHA512

        019c20a2354ef20ff3870ea4d544ae4e7ec21729bfbeb19d2dd2f8b087fcb6b83f259ab2f35e0f3c7f044ebb7c5bbfdfc63f23b811d458a15f5ad35aa9175228

      • memory/880-14-0x0000000000960000-0x00000000009DF000-memory.dmp

        Filesize

        508KB

      • memory/880-15-0x0000000000960000-0x00000000009DF000-memory.dmp

        Filesize

        508KB

      • memory/3032-26-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/3032-27-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/3032-28-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/3492-38-0x0000000000740000-0x00000000007BF000-memory.dmp

        Filesize

        508KB

      • memory/3492-9-0x0000000000740000-0x00000000007BF000-memory.dmp

        Filesize

        508KB

      • memory/3492-19-0x0000000000740000-0x00000000007BF000-memory.dmp

        Filesize

        508KB

      • memory/3492-20-0x0000000000740000-0x00000000007BF000-memory.dmp

        Filesize

        508KB

      • memory/3492-22-0x0000000000740000-0x00000000007BF000-memory.dmp

        Filesize

        508KB

      • memory/3492-44-0x0000000000740000-0x00000000007BF000-memory.dmp

        Filesize

        508KB

      • memory/3492-17-0x0000000000740000-0x00000000007BF000-memory.dmp

        Filesize

        508KB

      • memory/3492-45-0x0000000000740000-0x00000000007BF000-memory.dmp

        Filesize

        508KB

      • memory/3492-43-0x0000000000740000-0x00000000007BF000-memory.dmp

        Filesize

        508KB

      • memory/3492-16-0x0000000000740000-0x00000000007BF000-memory.dmp

        Filesize

        508KB

      • memory/3492-11-0x0000000000740000-0x00000000007BF000-memory.dmp

        Filesize

        508KB

      • memory/3492-42-0x0000000000740000-0x00000000007BF000-memory.dmp

        Filesize

        508KB

      • memory/3492-41-0x0000000000740000-0x00000000007BF000-memory.dmp

        Filesize

        508KB

      • memory/3492-40-0x0000000000740000-0x00000000007BF000-memory.dmp

        Filesize

        508KB

      • memory/3492-10-0x0000000000740000-0x00000000007BF000-memory.dmp

        Filesize

        508KB

      • memory/3492-37-0x0000000000740000-0x00000000007BF000-memory.dmp

        Filesize

        508KB

      • memory/3492-18-0x0000000000740000-0x00000000007BF000-memory.dmp

        Filesize

        508KB

      • memory/3492-39-0x0000000000740000-0x00000000007BF000-memory.dmp

        Filesize

        508KB

      • memory/3592-34-0x0000000000400000-0x0000000000457000-memory.dmp

        Filesize

        348KB

      • memory/3592-24-0x0000000000400000-0x0000000000457000-memory.dmp

        Filesize

        348KB

      • memory/3592-29-0x0000000000400000-0x0000000000457000-memory.dmp

        Filesize

        348KB

      • memory/4932-23-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/4932-30-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/4932-25-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB