Analysis

  • max time kernel
    141s
  • max time network
    114s
  • 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

    30.exe

  • Size

    469KB

  • MD5

    5d2b4474b0e1afd17f12ab2441897c2d

  • SHA1

    89d743eeef1e61dfdd24a285216d0272e4c02392

  • SHA256

    998d74008e3c7797d5d810e53582b8a60ed9866b9502ee35353d13ff69538e4e

  • SHA512

    18c9d687792942566acd3865a6ba3d21c2ae3367fc418ba1f048a7efbee6f524797c7502f11930f9a568d0e1bde5806fe92b4d53448e2e605d837be16c7e4040

  • SSDEEP

    12288:umnk7iLJbpIpiRL6I2WhSKQ9ZsfZQSVn9:WiLJbpI7I2WhQqZ7V9

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-EZMUSK

  • 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\30.exe
    "C:\Users\Admin\AppData\Local\Temp\30.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:3112
    • 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:2436
      • 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:4060
    • 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:2584
      • 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:4852
        • 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:3708
          • 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:2636
            • 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:5076
          • \??\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:312
            • 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:1548
              • 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:1616
            • C:\Windows\SysWOW64\svchost.exe
              svchost.exe
              6⤵
                PID:1524
              • \??\c:\program files (x86)\internet explorer\iexplore.exe
                "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\pnmljrdblqbjkpqzdrheodwluhfhcayggd"
                6⤵
                • System Location Discovery: System Language Discovery
                • Suspicious behavior: EnumeratesProcesses
                PID:2780
              • \??\c:\program files (x86)\internet explorer\iexplore.exe
                "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\shrebj"
                6⤵
                • Accesses Microsoft Outlook accounts
                • System Location Discovery: System Language Discovery
                PID:1252
              • \??\c:\program files (x86)\internet explorer\iexplore.exe
                "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\ckxoccywn"
                6⤵
                • System Location Discovery: System Language Discovery
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:4812
              • C:\Windows\SysWOW64\WScript.exe
                "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\pkklidyhjcjlnulnitpcpowpojkon.vbs"
                6⤵
                • System Location Discovery: System Language Discovery
                PID:5064

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\files\scvhost.exe

      Filesize

      469KB

      MD5

      5d2b4474b0e1afd17f12ab2441897c2d

      SHA1

      89d743eeef1e61dfdd24a285216d0272e4c02392

      SHA256

      998d74008e3c7797d5d810e53582b8a60ed9866b9502ee35353d13ff69538e4e

      SHA512

      18c9d687792942566acd3865a6ba3d21c2ae3367fc418ba1f048a7efbee6f524797c7502f11930f9a568d0e1bde5806fe92b4d53448e2e605d837be16c7e4040

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

      Filesize

      502B

      MD5

      13a6febd45faf411083285291bc2bb70

      SHA1

      7affdc48022b461839935a7e3b8e4accbda90497

      SHA256

      e852b9fcf3adb02def85511ae13b607f3fb00002f6eb5c7cf97c89ccd26b769c

      SHA512

      cd41b2e172bc99666b75b0627a743303ba93a8b65ac8d9b2babb9aa7ce741f9835756cc3b72f77d217068a923a437bbdb70850f57e4a43a2e42e059fd0cfcb35

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

      Filesize

      528B

      MD5

      3478bb3d9b1528548baa4ee1de04d269

      SHA1

      92c19b97cd135f38d5964bc079df412a20358927

      SHA256

      684029bc6616d1014d596ca182bc3d6c27973544ea918fc5bf9e174b5333015a

      SHA512

      84f2ce197098abbbfc9f8a8524271f29a693be7e16ca968241c3152276ae72596979f643476d73dc005b7765b90657b2ae47c5946463163a710b682f7772f239

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

      Filesize

      4KB

      MD5

      f1d2c01ce674ad7d5bad04197c371fbc

      SHA1

      4bf0ed04d156a3dc6c8d27e134ecbda76d3585aa

      SHA256

      25b006032deccd628940ef728fffe83b325a85de453a34691f55f570e4460094

      SHA512

      81cb982cc33dcc27600a8a681c3ec3cc5b9221b95baa45e1ab24479745a9638b9f31d7beeeb1128b3294ff69b44e958c75e25d565f66790c364665caff96ee77

    • memory/312-38-0x0000000000CD0000-0x0000000000D4F000-memory.dmp

      Filesize

      508KB

    • memory/312-40-0x0000000000CD0000-0x0000000000D4F000-memory.dmp

      Filesize

      508KB

    • memory/312-9-0x0000000000CD0000-0x0000000000D4F000-memory.dmp

      Filesize

      508KB

    • memory/312-16-0x0000000000CD0000-0x0000000000D4F000-memory.dmp

      Filesize

      508KB

    • memory/312-17-0x0000000000CD0000-0x0000000000D4F000-memory.dmp

      Filesize

      508KB

    • memory/312-18-0x0000000000CD0000-0x0000000000D4F000-memory.dmp

      Filesize

      508KB

    • memory/312-19-0x0000000000CD0000-0x0000000000D4F000-memory.dmp

      Filesize

      508KB

    • memory/312-20-0x0000000000CD0000-0x0000000000D4F000-memory.dmp

      Filesize

      508KB

    • memory/312-22-0x0000000000CD0000-0x0000000000D4F000-memory.dmp

      Filesize

      508KB

    • memory/312-51-0x0000000000CD0000-0x0000000000D4F000-memory.dmp

      Filesize

      508KB

    • memory/312-46-0x0000000000CD0000-0x0000000000D4F000-memory.dmp

      Filesize

      508KB

    • memory/312-45-0x0000000000CD0000-0x0000000000D4F000-memory.dmp

      Filesize

      508KB

    • memory/312-44-0x0000000000CD0000-0x0000000000D4F000-memory.dmp

      Filesize

      508KB

    • memory/312-43-0x0000000000CD0000-0x0000000000D4F000-memory.dmp

      Filesize

      508KB

    • memory/312-42-0x0000000000CD0000-0x0000000000D4F000-memory.dmp

      Filesize

      508KB

    • memory/312-41-0x0000000000CD0000-0x0000000000D4F000-memory.dmp

      Filesize

      508KB

    • memory/312-39-0x0000000000CD0000-0x0000000000D4F000-memory.dmp

      Filesize

      508KB

    • memory/312-10-0x0000000000CD0000-0x0000000000D4F000-memory.dmp

      Filesize

      508KB

    • memory/312-37-0x0000000000CD0000-0x0000000000D4F000-memory.dmp

      Filesize

      508KB

    • memory/312-11-0x0000000000CD0000-0x0000000000D4F000-memory.dmp

      Filesize

      508KB

    • memory/1252-26-0x0000000000400000-0x0000000000457000-memory.dmp

      Filesize

      348KB

    • memory/1252-28-0x0000000000400000-0x0000000000457000-memory.dmp

      Filesize

      348KB

    • memory/1252-24-0x0000000000400000-0x0000000000457000-memory.dmp

      Filesize

      348KB

    • memory/1524-14-0x0000000000E00000-0x0000000000E7F000-memory.dmp

      Filesize

      508KB

    • memory/1524-15-0x0000000000E00000-0x0000000000E7F000-memory.dmp

      Filesize

      508KB

    • memory/2780-27-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/2780-25-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/2780-23-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/4812-30-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/4812-31-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/4812-29-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB