Analysis

  • max time kernel
    149s
  • max time network
    142s
  • 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

    14.exe

  • Size

    469KB

  • MD5

    0abc38d7702c97bc7cd87b30004a5c5f

  • SHA1

    0c7198c92914d0a7b92c4cbd4012b869322b5fce

  • SHA256

    4f8944279f1f8b228116ddb677128c897234b61b741c6430817079eab5d30263

  • SHA512

    3defbd77e819cdb561561a0d1d229ea6404073c06bca9fe3a4aa484028e7fbaba8a35da56154b471a98c77d56844908f1931cbbfcdea8deaf36d57c2ceab7900

  • SSDEEP

    12288:Wmnk7iLJbpIpiRL6I2WhSKQ9ZsfZQSnn9:uiLJbpI7I2WhQqZ7n9

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-WJYN4Q

  • 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 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 56 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\14.exe
    "C:\Users\Admin\AppData\Local\Temp\14.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:3516
    • 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:2060
      • 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:5008
    • 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:2348
      • 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:3288
        • 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:4876
          • 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:3752
            • 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:4956
          • \??\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:1768
            • 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:3420
              • 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:1532
            • C:\Windows\SysWOW64\svchost.exe
              svchost.exe
              6⤵
                PID:4992
              • \??\c:\program files (x86)\internet explorer\iexplore.exe
                "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\kscqkewlqzoaygvsmoatiismooyjvyx"
                6⤵
                • System Location Discovery: System Language Discovery
                • Suspicious behavior: EnumeratesProcesses
                PID:4712
              • \??\c:\program files (x86)\internet explorer\iexplore.exe
                "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\uupjkwgfmhhnjmjeeqvvlvmdxuhswjwowo"
                6⤵
                  PID:244
                • \??\c:\program files (x86)\internet explorer\iexplore.exe
                  "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\uupjkwgfmhhnjmjeeqvvlvmdxuhswjwowo"
                  6⤵
                    PID:1164
                  • \??\c:\program files (x86)\internet explorer\iexplore.exe
                    "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\uupjkwgfmhhnjmjeeqvvlvmdxuhswjwowo"
                    6⤵
                      PID:3168
                    • \??\c:\program files (x86)\internet explorer\iexplore.exe
                      "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\uupjkwgfmhhnjmjeeqvvlvmdxuhswjwowo"
                      6⤵
                      • Accesses Microsoft Outlook accounts
                      • System Location Discovery: System Language Discovery
                      PID:1592
                    • \??\c:\program files (x86)\internet explorer\iexplore.exe
                      "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\xovclpr"
                      6⤵
                      • System Location Discovery: System Language Discovery
                      • Suspicious behavior: EnumeratesProcesses
                      • Suspicious use of AdjustPrivilegeToken
                      PID:3396

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          • C:\ProgramData\files\scvhost.exe

            Filesize

            469KB

            MD5

            0abc38d7702c97bc7cd87b30004a5c5f

            SHA1

            0c7198c92914d0a7b92c4cbd4012b869322b5fce

            SHA256

            4f8944279f1f8b228116ddb677128c897234b61b741c6430817079eab5d30263

            SHA512

            3defbd77e819cdb561561a0d1d229ea6404073c06bca9fe3a4aa484028e7fbaba8a35da56154b471a98c77d56844908f1931cbbfcdea8deaf36d57c2ceab7900

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

            Filesize

            502B

            MD5

            b12246e12c15fc70ba52d9c38ca6fea8

            SHA1

            8d1f9900db47457ff5b08f128ef561490c0a3256

            SHA256

            b1613cb5945f7bcea5e2287c006332ced7fd275b2805cba21891882d93ba8c6e

            SHA512

            c476808565c0df60d633871dca9d85be8eaa7a37c2055829f5aed7356fc562dfbcb32df9001d1cfbd2f4933ae27449202fe6fdee6258e8533874cd58bd6bfadc

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

            Filesize

            4KB

            MD5

            16dfb23eaa7972c59c36fcbc0946093b

            SHA1

            1e9e3ff83a05131575f67e202d352709205f20f8

            SHA256

            36c49c94327c8cadcad4c0d2b3a8f5162fc7bb86624923484476c5f7b960bc4c

            SHA512

            a8b38b5e7bf886b78c5c7f01234b44647a252d4dfbcc06c99b863f8e160e3cfc151b2a83b8b49e09d13e8547419467da4bffbb8dee5fc6740032eb7c839d89dc

          • memory/1592-25-0x0000000000400000-0x0000000000457000-memory.dmp

            Filesize

            348KB

          • memory/1592-34-0x0000000000400000-0x0000000000457000-memory.dmp

            Filesize

            348KB

          • memory/1592-30-0x0000000000400000-0x0000000000457000-memory.dmp

            Filesize

            348KB

          • memory/1768-39-0x0000000001000000-0x000000000107F000-memory.dmp

            Filesize

            508KB

          • memory/1768-38-0x0000000001000000-0x000000000107F000-memory.dmp

            Filesize

            508KB

          • memory/1768-17-0x0000000001000000-0x000000000107F000-memory.dmp

            Filesize

            508KB

          • memory/1768-18-0x0000000001000000-0x000000000107F000-memory.dmp

            Filesize

            508KB

          • memory/1768-19-0x0000000001000000-0x000000000107F000-memory.dmp

            Filesize

            508KB

          • memory/1768-20-0x0000000001000000-0x000000000107F000-memory.dmp

            Filesize

            508KB

          • memory/1768-22-0x0000000001000000-0x000000000107F000-memory.dmp

            Filesize

            508KB

          • memory/1768-44-0x0000000001000000-0x000000000107F000-memory.dmp

            Filesize

            508KB

          • memory/1768-45-0x0000000001000000-0x000000000107F000-memory.dmp

            Filesize

            508KB

          • memory/1768-43-0x0000000001000000-0x000000000107F000-memory.dmp

            Filesize

            508KB

          • memory/1768-42-0x0000000001000000-0x000000000107F000-memory.dmp

            Filesize

            508KB

          • memory/1768-40-0x0000000001000000-0x000000000107F000-memory.dmp

            Filesize

            508KB

          • memory/1768-41-0x0000000001000000-0x000000000107F000-memory.dmp

            Filesize

            508KB

          • memory/1768-11-0x0000000001000000-0x000000000107F000-memory.dmp

            Filesize

            508KB

          • memory/1768-16-0x0000000001000000-0x000000000107F000-memory.dmp

            Filesize

            508KB

          • memory/1768-9-0x0000000001000000-0x000000000107F000-memory.dmp

            Filesize

            508KB

          • memory/1768-10-0x0000000001000000-0x000000000107F000-memory.dmp

            Filesize

            508KB

          • memory/1768-37-0x0000000001000000-0x000000000107F000-memory.dmp

            Filesize

            508KB

          • memory/3396-27-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/3396-29-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/3396-26-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/4712-28-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/4712-24-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/4712-23-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/4992-14-0x0000000000940000-0x00000000009BF000-memory.dmp

            Filesize

            508KB

          • memory/4992-15-0x0000000000940000-0x00000000009BF000-memory.dmp

            Filesize

            508KB