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

    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
  • 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 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 64 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
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1832
    • 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:2544
      • 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:2100
    • 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:2240
      • 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:2768
        • 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:2784
          • 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:2980
            • 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:2812
          • \??\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:2744
            • 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:2944
              • 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:2824
            • C:\Windows\SysWOW64\svchost.exe
              svchost.exe
              6⤵
                PID:2800
              • \??\c:\program files (x86)\internet explorer\iexplore.exe
                "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\etbbbmvzktakugmxupuxrc"
                6⤵
                • System Location Discovery: System Language Discovery
                • Suspicious behavior: EnumeratesProcesses
                PID:2260
              • \??\c:\program files (x86)\internet explorer\iexplore.exe
                "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\onolueftybsoenajlaoqchwvr"
                6⤵
                • Accesses Microsoft Outlook accounts
                • System Location Discovery: System Language Discovery
                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\rptevxqvujkthtwnulbsfujmznblu"
                6⤵
                  PID:1768
                • \??\c:\program files (x86)\internet explorer\iexplore.exe
                  "c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\rptevxqvujkthtwnulbsfujmznblu"
                  6⤵
                  • System Location Discovery: System Language Discovery
                  • Suspicious use of AdjustPrivilegeToken
                  PID:1444

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

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

        Filesize

        2B

        MD5

        f3b25701fe362ec84616a93a45ce9998

        SHA1

        d62636d8caec13f04e28442a0a6fa1afeb024bbb

        SHA256

        b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

        SHA512

        98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

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

        Filesize

        502B

        MD5

        b12246e12c15fc70ba52d9c38ca6fea8

        SHA1

        8d1f9900db47457ff5b08f128ef561490c0a3256

        SHA256

        b1613cb5945f7bcea5e2287c006332ced7fd275b2805cba21891882d93ba8c6e

        SHA512

        c476808565c0df60d633871dca9d85be8eaa7a37c2055829f5aed7356fc562dfbcb32df9001d1cfbd2f4933ae27449202fe6fdee6258e8533874cd58bd6bfadc

      • \ProgramData\files\scvhost.exe

        Filesize

        469KB

        MD5

        0abc38d7702c97bc7cd87b30004a5c5f

        SHA1

        0c7198c92914d0a7b92c4cbd4012b869322b5fce

        SHA256

        4f8944279f1f8b228116ddb677128c897234b61b741c6430817079eab5d30263

        SHA512

        3defbd77e819cdb561561a0d1d229ea6404073c06bca9fe3a4aa484028e7fbaba8a35da56154b471a98c77d56844908f1931cbbfcdea8deaf36d57c2ceab7900

      • memory/1444-37-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/1444-36-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/1444-34-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/1444-35-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/2260-27-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/2260-26-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/2260-30-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/2260-32-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/2668-29-0x0000000000400000-0x0000000000457000-memory.dmp

        Filesize

        348KB

      • memory/2668-31-0x0000000000400000-0x0000000000457000-memory.dmp

        Filesize

        348KB

      • memory/2668-33-0x0000000000400000-0x0000000000457000-memory.dmp

        Filesize

        348KB

      • memory/2744-19-0x0000000000080000-0x00000000000FF000-memory.dmp

        Filesize

        508KB

      • memory/2744-47-0x0000000000080000-0x00000000000FF000-memory.dmp

        Filesize

        508KB

      • memory/2744-23-0x0000000000080000-0x00000000000FF000-memory.dmp

        Filesize

        508KB

      • memory/2744-22-0x0000000000080000-0x00000000000FF000-memory.dmp

        Filesize

        508KB

      • memory/2744-21-0x0000000000080000-0x00000000000FF000-memory.dmp

        Filesize

        508KB

      • memory/2744-20-0x0000000000080000-0x00000000000FF000-memory.dmp

        Filesize

        508KB

      • memory/2744-51-0x0000000000080000-0x00000000000FF000-memory.dmp

        Filesize

        508KB

      • memory/2744-50-0x0000000000080000-0x00000000000FF000-memory.dmp

        Filesize

        508KB

      • memory/2744-49-0x0000000000080000-0x00000000000FF000-memory.dmp

        Filesize

        508KB

      • memory/2744-13-0x0000000000080000-0x00000000000FF000-memory.dmp

        Filesize

        508KB

      • memory/2744-11-0x0000000000080000-0x00000000000FF000-memory.dmp

        Filesize

        508KB

      • memory/2744-12-0x0000000000080000-0x00000000000FF000-memory.dmp

        Filesize

        508KB

      • memory/2744-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/2744-43-0x0000000000080000-0x00000000000FF000-memory.dmp

        Filesize

        508KB

      • memory/2744-44-0x0000000000080000-0x00000000000FF000-memory.dmp

        Filesize

        508KB

      • memory/2744-45-0x0000000000080000-0x00000000000FF000-memory.dmp

        Filesize

        508KB

      • memory/2744-25-0x0000000000080000-0x00000000000FF000-memory.dmp

        Filesize

        508KB

      • memory/2744-46-0x0000000000080000-0x00000000000FF000-memory.dmp

        Filesize

        508KB

      • memory/2744-48-0x0000000000080000-0x00000000000FF000-memory.dmp

        Filesize

        508KB

      • memory/2800-16-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/2800-18-0x0000000000110000-0x000000000018F000-memory.dmp

        Filesize

        508KB

      • memory/2800-17-0x0000000000110000-0x000000000018F000-memory.dmp

        Filesize

        508KB