Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    19/10/2024, 09:03

General

  • Target

    25.exe

  • Size

    469KB

  • MD5

    481d7c33a69366bd777a031b9b91a801

  • SHA1

    1f0d466674b4e61a056c5e1c42eeeb24ab38c3e2

  • SHA256

    6bd339cbfca8e0d4b4479448484e49cc5c2aa5dce974df976b920e5dff3b621c

  • SHA512

    d36fb6ba206dbbcae5fcad10b5f0bf85dda95d6bf8aa70696442d480825e57911e096d1e4ca22e1e30d3fcd5c76661770260112ea97a8c11755601c6bcbcf9b3

  • SSDEEP

    12288:Wmnk7iLJbpIpiRL6I2WhSKQ9ZsfZQSZxn9:uiLJbpI7I2WhQqZ7Zx9

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-V9OLP1

  • 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 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 61 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\25.exe
    "C:\Users\Admin\AppData\Local\Temp\25.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:2860
    • 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:2876
      • 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:3020
    • 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:2644
      • 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:2572
        • 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:2900
          • 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:2648
            • 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:2112
          • \??\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:2656
            • 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:1268
              • 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:2616
            • C:\Windows\SysWOW64\svchost.exe
              svchost.exe
              6⤵
                PID:2548
              • \??\c:\program files (x86)\internet explorer\iexplore.exe
                "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\eocauisuupsajbqjpntyqjcawqc"
                6⤵
                • System Location Discovery: System Language Discovery
                • Suspicious behavior: EnumeratesProcesses
                PID:2256
              • \??\c:\program files (x86)\internet explorer\iexplore.exe
                "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\gqitvalnixknthmngxgatvwrffmdpf"
                6⤵
                • Accesses Microsoft Outlook accounts
                • System Location Discovery: System Language Discovery
                PID:2996
              • \??\c:\program files (x86)\internet explorer\iexplore.exe
                "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\rlvdntvpvfcsvnazpitteajaglemqqnop"
                6⤵
                • System Location Discovery: System Language Discovery
                • Suspicious use of AdjustPrivilegeToken
                PID:1944

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      2B

      MD5

      f3b25701fe362ec84616a93a45ce9998

      SHA1

      d62636d8caec13f04e28442a0a6fa1afeb024bbb

      SHA256

      b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

      SHA512

      98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

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

      Filesize

      502B

      MD5

      9fb71961c879947cf76b551b121121fe

      SHA1

      342033eb35a5cd77cd6888c338dcf93969edfb81

      SHA256

      0ce65e093d1865ffddff90e29f3ffcc45e8772a8b956bcfc5360ccbc87f6fd8f

      SHA512

      fe3169ad1707560f5e2d27a72cac1469885aca7c8d04fb662d2bb471fd3a8894b48b6aabce87ea711a826b2f7ce8c0eaec709db9aa2bf72be519b4f291773797

    • \ProgramData\files\scvhost.exe

      Filesize

      469KB

      MD5

      481d7c33a69366bd777a031b9b91a801

      SHA1

      1f0d466674b4e61a056c5e1c42eeeb24ab38c3e2

      SHA256

      6bd339cbfca8e0d4b4479448484e49cc5c2aa5dce974df976b920e5dff3b621c

      SHA512

      d36fb6ba206dbbcae5fcad10b5f0bf85dda95d6bf8aa70696442d480825e57911e096d1e4ca22e1e30d3fcd5c76661770260112ea97a8c11755601c6bcbcf9b3

    • memory/1944-35-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/1944-36-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/1944-37-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/2256-27-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/2256-30-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/2256-33-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/2256-26-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2548-17-0x0000000000100000-0x000000000017F000-memory.dmp

      Filesize

      508KB

    • memory/2548-16-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2548-19-0x0000000000100000-0x000000000017F000-memory.dmp

      Filesize

      508KB

    • memory/2656-50-0x00000000000F0000-0x000000000016F000-memory.dmp

      Filesize

      508KB

    • memory/2656-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2656-49-0x00000000000F0000-0x000000000016F000-memory.dmp

      Filesize

      508KB

    • memory/2656-22-0x00000000000F0000-0x000000000016F000-memory.dmp

      Filesize

      508KB

    • memory/2656-23-0x00000000000F0000-0x000000000016F000-memory.dmp

      Filesize

      508KB

    • memory/2656-18-0x00000000000F0000-0x000000000016F000-memory.dmp

      Filesize

      508KB

    • memory/2656-20-0x00000000000F0000-0x000000000016F000-memory.dmp

      Filesize

      508KB

    • memory/2656-14-0x00000000000F0000-0x000000000016F000-memory.dmp

      Filesize

      508KB

    • memory/2656-21-0x00000000000F0000-0x000000000016F000-memory.dmp

      Filesize

      508KB

    • memory/2656-25-0x00000000000F0000-0x000000000016F000-memory.dmp

      Filesize

      508KB

    • memory/2656-12-0x00000000000F0000-0x000000000016F000-memory.dmp

      Filesize

      508KB

    • memory/2656-51-0x00000000000F0000-0x000000000016F000-memory.dmp

      Filesize

      508KB

    • memory/2656-11-0x00000000000F0000-0x000000000016F000-memory.dmp

      Filesize

      508KB

    • memory/2656-43-0x00000000000F0000-0x000000000016F000-memory.dmp

      Filesize

      508KB

    • memory/2656-44-0x00000000000F0000-0x000000000016F000-memory.dmp

      Filesize

      508KB

    • memory/2656-45-0x00000000000F0000-0x000000000016F000-memory.dmp

      Filesize

      508KB

    • memory/2656-47-0x00000000000F0000-0x000000000016F000-memory.dmp

      Filesize

      508KB

    • memory/2656-46-0x00000000000F0000-0x000000000016F000-memory.dmp

      Filesize

      508KB

    • memory/2656-48-0x00000000000F0000-0x000000000016F000-memory.dmp

      Filesize

      508KB

    • memory/2996-29-0x0000000000400000-0x0000000000457000-memory.dmp

      Filesize

      348KB

    • memory/2996-31-0x0000000000400000-0x0000000000457000-memory.dmp

      Filesize

      348KB

    • memory/2996-32-0x0000000000400000-0x0000000000457000-memory.dmp

      Filesize

      348KB