Analysis

  • max time kernel
    149s
  • max time network
    154s
  • 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, 08:59

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 15 IoCs

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

  • Modifies registry class 2 IoCs
  • Modifies registry key 1 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: MapViewOfSection 5 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:448
    • 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:4680
      • 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:4472
    • 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:4660
      • 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:4064
        • 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:4504
          • 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:5016
            • 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:4904
          • \??\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
            • Modifies registry class
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of WriteProcessMemory
            PID:3988
            • 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:3060
              • 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:4596
            • C:\Windows\SysWOW64\svchost.exe
              svchost.exe
              6⤵
                PID:1264
              • \??\c:\program files (x86)\internet explorer\iexplore.exe
                "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\kutywerypzjzwwvok"
                6⤵
                • System Location Discovery: System Language Discovery
                • Suspicious behavior: EnumeratesProcesses
                PID:1780
              • \??\c:\program files (x86)\internet explorer\iexplore.exe
                "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\uwyqpxcadhbehkjstehi"
                6⤵
                • Accesses Microsoft Outlook accounts
                • System Location Discovery: System Language Discovery
                PID:864
              • \??\c:\program files (x86)\internet explorer\iexplore.exe
                "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\xqejqpmtrptrjqfwdpukhgah"
                6⤵
                • System Location Discovery: System Language Discovery
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:3964
              • C:\Windows\SysWOW64\WScript.exe
                "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\tsuwckvfqbqjhtllduozmlbvegklsnnl.vbs"
                6⤵
                • System Location Discovery: System Language Discovery
                PID:852

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    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\kutywerypzjzwwvok

      Filesize

      4KB

      MD5

      75379d3dcbcea6a69bc75b884816dd40

      SHA1

      7e073a03c3bdbbc60375ddbe56bba211c3d412a6

      SHA256

      cab559f3bbe4a0beb194dffca723b3072184b92687100462eaab04d66fff8de9

      SHA512

      710c2cee369a57a0039fc0d0c59de6118780210ef60ad0daf374f03ba94ab08039bc2aff821f7c99a0ecd0e16189c52e5b6d630b3d541f7b11375f134b985e8c

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

      Filesize

      528B

      MD5

      3478bb3d9b1528548baa4ee1de04d269

      SHA1

      92c19b97cd135f38d5964bc079df412a20358927

      SHA256

      684029bc6616d1014d596ca182bc3d6c27973544ea918fc5bf9e174b5333015a

      SHA512

      84f2ce197098abbbfc9f8a8524271f29a693be7e16ca968241c3152276ae72596979f643476d73dc005b7765b90657b2ae47c5946463163a710b682f7772f239

    • memory/864-31-0x0000000000400000-0x0000000000457000-memory.dmp

      Filesize

      348KB

    • memory/864-28-0x0000000000400000-0x0000000000457000-memory.dmp

      Filesize

      348KB

    • memory/864-24-0x0000000000400000-0x0000000000457000-memory.dmp

      Filesize

      348KB

    • memory/1264-14-0x0000000000C00000-0x0000000000C7F000-memory.dmp

      Filesize

      508KB

    • memory/1264-15-0x0000000000C00000-0x0000000000C7F000-memory.dmp

      Filesize

      508KB

    • memory/1780-26-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/1780-30-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/1780-23-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/3964-25-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/3964-29-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/3964-27-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/3988-18-0x0000000000800000-0x000000000087F000-memory.dmp

      Filesize

      508KB

    • memory/3988-40-0x0000000000800000-0x000000000087F000-memory.dmp

      Filesize

      508KB

    • memory/3988-20-0x0000000000800000-0x000000000087F000-memory.dmp

      Filesize

      508KB

    • memory/3988-19-0x0000000000800000-0x000000000087F000-memory.dmp

      Filesize

      508KB

    • memory/3988-17-0x0000000000800000-0x000000000087F000-memory.dmp

      Filesize

      508KB

    • memory/3988-16-0x0000000000800000-0x000000000087F000-memory.dmp

      Filesize

      508KB

    • memory/3988-10-0x0000000000800000-0x000000000087F000-memory.dmp

      Filesize

      508KB

    • memory/3988-11-0x0000000000800000-0x000000000087F000-memory.dmp

      Filesize

      508KB

    • memory/3988-37-0x0000000000800000-0x000000000087F000-memory.dmp

      Filesize

      508KB

    • memory/3988-39-0x0000000000800000-0x000000000087F000-memory.dmp

      Filesize

      508KB

    • memory/3988-38-0x0000000000800000-0x000000000087F000-memory.dmp

      Filesize

      508KB

    • memory/3988-22-0x0000000000800000-0x000000000087F000-memory.dmp

      Filesize

      508KB

    • memory/3988-41-0x0000000000800000-0x000000000087F000-memory.dmp

      Filesize

      508KB

    • memory/3988-42-0x0000000000800000-0x000000000087F000-memory.dmp

      Filesize

      508KB

    • memory/3988-43-0x0000000000800000-0x000000000087F000-memory.dmp

      Filesize

      508KB

    • memory/3988-44-0x0000000000800000-0x000000000087F000-memory.dmp

      Filesize

      508KB

    • memory/3988-45-0x0000000000800000-0x000000000087F000-memory.dmp

      Filesize

      508KB

    • memory/3988-46-0x0000000000800000-0x000000000087F000-memory.dmp

      Filesize

      508KB

    • memory/3988-47-0x0000000000800000-0x000000000087F000-memory.dmp

      Filesize

      508KB

    • memory/3988-51-0x0000000000800000-0x000000000087F000-memory.dmp

      Filesize

      508KB

    • memory/3988-9-0x0000000000800000-0x000000000087F000-memory.dmp

      Filesize

      508KB