Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    19/10/2024, 09:03

General

  • Target

    17.exe

  • Size

    469KB

  • MD5

    44ac1dfd7a50938d27a187cfd2d1d6f6

  • SHA1

    8b4b107f3c89e6882ece16ab4d41518131c4d57f

  • SHA256

    81fc8c39bd528cc4254d93f3f3c5757bae4a05f34cbd8a48d851b9197cbafe75

  • SHA512

    9247522fdf1f4e5d389f6068f87cb6d0205e9b16a34f21181be18003643f704a6ea222532d7186404ae628011f4674e72c598d31a4b3ae6f00e0f2d07929281e

  • SSDEEP

    12288:Wmnk7iLJbpIpiRL6I2WhSKQ9ZsfZQS/n9:uiLJbpI7I2WhQqZ7/9

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-G606WF

  • 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
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 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 key 1 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: MapViewOfSection 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\17.exe
    "C:\Users\Admin\AppData\Local\Temp\17.exe"
    1⤵
    • Adds policy Run key to start application
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1292
    • 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:1928
      • 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:1776
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
      2⤵
      • Deletes itself
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1936
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c "C:\ProgramData\files\scvhost.exe"
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1692
        • 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:2296
          • 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:2864
            • 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:2632
          • \??\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:2872
            • 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:2720
              • 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:2916
            • C:\Windows\SysWOW64\svchost.exe
              svchost.exe
              6⤵
                PID:2712
              • \??\c:\program files (x86)\internet explorer\iexplore.exe
                "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\mxrwtp"
                6⤵
                  PID:2640
                • \??\c:\program files (x86)\internet explorer\iexplore.exe
                  "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\mxrwtp"
                  6⤵
                    PID:2660
                  • \??\c:\program files (x86)\internet explorer\iexplore.exe
                    "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\mxrwtp"
                    6⤵
                      PID:2668
                    • \??\c:\program files (x86)\internet explorer\iexplore.exe
                      "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\mxrwtp"
                      6⤵
                        PID:2084
                      • \??\c:\program files (x86)\internet explorer\iexplore.exe
                        "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\mxrwtp"
                        6⤵
                        • System Location Discovery: System Language Discovery
                        • Suspicious behavior: EnumeratesProcesses
                        PID:3040
                      • \??\c:\program files (x86)\internet explorer\iexplore.exe
                        "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\wreptikxf"
                        6⤵
                        • Accesses Microsoft Outlook accounts
                        • System Location Discovery: System Language Discovery
                        PID:2880
                      • \??\c:\program files (x86)\internet explorer\iexplore.exe
                        "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\ztkhuadqtnyrd"
                        6⤵
                        • System Location Discovery: System Language Discovery
                        • Suspicious use of AdjustPrivilegeToken
                        PID:3052

            Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

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

              Filesize

              502B

              MD5

              d22a86431b49df3f057f86713e026959

              SHA1

              ba704133a7a33b4bed82a63982645b8c878acec1

              SHA256

              8f3ac671b60c13acd563b6db1c45dba6ae332430d6548d0ef571a089da7bced4

              SHA512

              d9fe1e4faaf817dc63802064adc7d167d6a0e62e2335b1bd227d860c77e9353c0799d2fe305c03f896eb4fe8e865d7248e9ff56c56fabfdf9b4c135b350ca839

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

              Filesize

              2B

              MD5

              f3b25701fe362ec84616a93a45ce9998

              SHA1

              d62636d8caec13f04e28442a0a6fa1afeb024bbb

              SHA256

              b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

              SHA512

              98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

            • \ProgramData\files\scvhost.exe

              Filesize

              469KB

              MD5

              44ac1dfd7a50938d27a187cfd2d1d6f6

              SHA1

              8b4b107f3c89e6882ece16ab4d41518131c4d57f

              SHA256

              81fc8c39bd528cc4254d93f3f3c5757bae4a05f34cbd8a48d851b9197cbafe75

              SHA512

              9247522fdf1f4e5d389f6068f87cb6d0205e9b16a34f21181be18003643f704a6ea222532d7186404ae628011f4674e72c598d31a4b3ae6f00e0f2d07929281e

            • memory/2712-16-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

              Filesize

              4KB

            • memory/2712-18-0x0000000000130000-0x00000000001AF000-memory.dmp

              Filesize

              508KB

            • memory/2712-17-0x0000000000130000-0x00000000001AF000-memory.dmp

              Filesize

              508KB

            • memory/2872-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

              Filesize

              4KB

            • memory/2872-45-0x0000000000080000-0x00000000000FF000-memory.dmp

              Filesize

              508KB

            • memory/2872-48-0x0000000000080000-0x00000000000FF000-memory.dmp

              Filesize

              508KB

            • memory/2872-19-0x0000000000080000-0x00000000000FF000-memory.dmp

              Filesize

              508KB

            • memory/2872-20-0x0000000000080000-0x00000000000FF000-memory.dmp

              Filesize

              508KB

            • memory/2872-21-0x0000000000080000-0x00000000000FF000-memory.dmp

              Filesize

              508KB

            • memory/2872-22-0x0000000000080000-0x00000000000FF000-memory.dmp

              Filesize

              508KB

            • memory/2872-24-0x0000000000080000-0x00000000000FF000-memory.dmp

              Filesize

              508KB

            • memory/2872-25-0x0000000000080000-0x00000000000FF000-memory.dmp

              Filesize

              508KB

            • memory/2872-49-0x0000000000080000-0x00000000000FF000-memory.dmp

              Filesize

              508KB

            • memory/2872-11-0x0000000000080000-0x00000000000FF000-memory.dmp

              Filesize

              508KB

            • memory/2872-13-0x0000000000080000-0x00000000000FF000-memory.dmp

              Filesize

              508KB

            • memory/2872-12-0x0000000000080000-0x00000000000FF000-memory.dmp

              Filesize

              508KB

            • memory/2872-47-0x0000000000080000-0x00000000000FF000-memory.dmp

              Filesize

              508KB

            • memory/2872-50-0x0000000000080000-0x00000000000FF000-memory.dmp

              Filesize

              508KB

            • memory/2872-51-0x0000000000080000-0x00000000000FF000-memory.dmp

              Filesize

              508KB

            • memory/2872-46-0x0000000000080000-0x00000000000FF000-memory.dmp

              Filesize

              508KB

            • memory/2872-44-0x0000000000080000-0x00000000000FF000-memory.dmp

              Filesize

              508KB

            • memory/2872-43-0x0000000000080000-0x00000000000FF000-memory.dmp

              Filesize

              508KB

            • memory/2880-36-0x0000000000400000-0x0000000000457000-memory.dmp

              Filesize

              348KB

            • memory/2880-33-0x0000000000400000-0x0000000000457000-memory.dmp

              Filesize

              348KB

            • memory/2880-29-0x0000000000400000-0x0000000000457000-memory.dmp

              Filesize

              348KB

            • memory/3040-37-0x0000000000400000-0x0000000000478000-memory.dmp

              Filesize

              480KB

            • memory/3040-26-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

              Filesize

              4KB

            • memory/3040-34-0x0000000000400000-0x0000000000478000-memory.dmp

              Filesize

              480KB

            • memory/3040-27-0x0000000000400000-0x0000000000478000-memory.dmp

              Filesize

              480KB

            • memory/3052-31-0x0000000000400000-0x0000000000424000-memory.dmp

              Filesize

              144KB

            • memory/3052-32-0x0000000000400000-0x0000000000424000-memory.dmp

              Filesize

              144KB

            • memory/3052-35-0x0000000000400000-0x0000000000424000-memory.dmp

              Filesize

              144KB