Analysis

  • max time kernel
    138s
  • max time network
    142s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    02/04/2024, 13:38

General

  • Target

    4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe

  • Size

    70KB

  • MD5

    109adf5a32829b151d536e30a81ee96b

  • SHA1

    dc23006a97e7d5bc34eedec563432e63ed6a226a

  • SHA256

    4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311

  • SHA512

    74e7fb13e195dcf6b8ed0f40c034925c3762b2e0c43c8faede99ce79a4b07966ff5336769db3f9f5bb4c0478cefc879d59b43d5ded5bda3e75d19bd0a1e9e9e5

  • SSDEEP

    1536:QeYZA06UMG73jWw9o5zeS6LQR9bAayaIMbckM6mfOWcNFOfab:QfZxfMGTFXS6LQR9bAaZbfsfOPMab

Malware Config

Extracted

Family

xworm

C2

involved-hurt.gl.at.ply.gg:35238

Attributes
  • Install_directory

    %LocalAppData%

  • install_file

    WindowsHealthSystem.exe

Signatures

  • Detect Xworm Payload 5 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Drops startup file 2 IoCs
  • Executes dropped EXE 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 9 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe
    "C:\Users\Admin\AppData\Local\Temp\4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe"
    1⤵
    • Drops startup file
    • Adds Run key to start application
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2352
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2940
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2640
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2856
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'WindowsHealthSystem.exe'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2520
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "WindowsHealthSystem" /tr "C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe"
      2⤵
      • Creates scheduled task(s)
      PID:3008
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {82E304E3-6E3B-4FB0-9CD1-50CFD11869AC} S-1-5-21-3627615824-4061627003-3019543961-1000:SCFGBRBT\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2332
    • C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe
      C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2804
    • C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe
      C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2540
    • C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe
      C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:980

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe

          Filesize

          70KB

          MD5

          109adf5a32829b151d536e30a81ee96b

          SHA1

          dc23006a97e7d5bc34eedec563432e63ed6a226a

          SHA256

          4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311

          SHA512

          74e7fb13e195dcf6b8ed0f40c034925c3762b2e0c43c8faede99ce79a4b07966ff5336769db3f9f5bb4c0478cefc879d59b43d5ded5bda3e75d19bd0a1e9e9e5

        • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\U7QRF1RFLL6OIBD2IVOQ.temp

          Filesize

          7KB

          MD5

          ebd673b2c8eb1c449496188830a9c80b

          SHA1

          2d7ee5397cebf1eb0c579783de9dc224eccb8780

          SHA256

          98d50f1ada2eead852912c165a54036368d6a6ea2a0ffe36cf7d2fb683615289

          SHA512

          8dd93be3628461060826aa0ac2f107fecada86f263ed42387d97e8e70f4e40ebd4e8e45bed577711f3505f3c78592a793d33a1830692e8ee1e655a6ee45db586

        • memory/980-72-0x000007FEF5C90000-0x000007FEF667C000-memory.dmp

          Filesize

          9.9MB

        • memory/980-71-0x000007FEF5C90000-0x000007FEF667C000-memory.dmp

          Filesize

          9.9MB

        • memory/980-70-0x0000000001060000-0x0000000001078000-memory.dmp

          Filesize

          96KB

        • memory/2352-56-0x000000001B440000-0x000000001B4C0000-memory.dmp

          Filesize

          512KB

        • memory/2352-1-0x000007FEF5C90000-0x000007FEF667C000-memory.dmp

          Filesize

          9.9MB

        • memory/2352-51-0x000007FEF5C90000-0x000007FEF667C000-memory.dmp

          Filesize

          9.9MB

        • memory/2352-0-0x0000000000EF0000-0x0000000000F08000-memory.dmp

          Filesize

          96KB

        • memory/2352-63-0x000000001B440000-0x000000001B4C0000-memory.dmp

          Filesize

          512KB

        • memory/2520-50-0x000007FEEE960000-0x000007FEEF2FD000-memory.dmp

          Filesize

          9.6MB

        • memory/2520-47-0x0000000002CA0000-0x0000000002D20000-memory.dmp

          Filesize

          512KB

        • memory/2520-48-0x0000000002CA0000-0x0000000002D20000-memory.dmp

          Filesize

          512KB

        • memory/2520-44-0x000007FEEE960000-0x000007FEEF2FD000-memory.dmp

          Filesize

          9.6MB

        • memory/2520-49-0x0000000002CAB000-0x0000000002D12000-memory.dmp

          Filesize

          412KB

        • memory/2520-46-0x000007FEEE960000-0x000007FEEF2FD000-memory.dmp

          Filesize

          9.6MB

        • memory/2520-45-0x0000000002CA0000-0x0000000002D20000-memory.dmp

          Filesize

          512KB

        • memory/2540-66-0x0000000000B20000-0x0000000000B38000-memory.dmp

          Filesize

          96KB

        • memory/2540-67-0x000007FEF5C90000-0x000007FEF667C000-memory.dmp

          Filesize

          9.9MB

        • memory/2540-68-0x000007FEF5C90000-0x000007FEF667C000-memory.dmp

          Filesize

          9.9MB

        • memory/2640-20-0x000000001B700000-0x000000001B9E2000-memory.dmp

          Filesize

          2.9MB

        • memory/2640-22-0x000007FEEE960000-0x000007FEEF2FD000-memory.dmp

          Filesize

          9.6MB

        • memory/2640-23-0x0000000002AF0000-0x0000000002B70000-memory.dmp

          Filesize

          512KB

        • memory/2640-21-0x0000000002760000-0x0000000002768000-memory.dmp

          Filesize

          32KB

        • memory/2640-26-0x0000000002AF0000-0x0000000002B70000-memory.dmp

          Filesize

          512KB

        • memory/2640-25-0x0000000002AF0000-0x0000000002B70000-memory.dmp

          Filesize

          512KB

        • memory/2640-24-0x000007FEEE960000-0x000007FEEF2FD000-memory.dmp

          Filesize

          9.6MB

        • memory/2640-27-0x000007FEEE960000-0x000007FEEF2FD000-memory.dmp

          Filesize

          9.6MB

        • memory/2804-60-0x00000000008B0000-0x00000000008C8000-memory.dmp

          Filesize

          96KB

        • memory/2804-62-0x000007FEF5C90000-0x000007FEF667C000-memory.dmp

          Filesize

          9.9MB

        • memory/2804-61-0x000007FEF5C90000-0x000007FEF667C000-memory.dmp

          Filesize

          9.9MB

        • memory/2856-35-0x000007FEF2380000-0x000007FEF2D1D000-memory.dmp

          Filesize

          9.6MB

        • memory/2856-38-0x000007FEF2380000-0x000007FEF2D1D000-memory.dmp

          Filesize

          9.6MB

        • memory/2856-34-0x0000000002AC0000-0x0000000002B40000-memory.dmp

          Filesize

          512KB

        • memory/2856-33-0x000007FEF2380000-0x000007FEF2D1D000-memory.dmp

          Filesize

          9.6MB

        • memory/2856-37-0x0000000002AC0000-0x0000000002B40000-memory.dmp

          Filesize

          512KB

        • memory/2856-36-0x0000000002AC0000-0x0000000002B40000-memory.dmp

          Filesize

          512KB

        • memory/2940-13-0x0000000002810000-0x0000000002890000-memory.dmp

          Filesize

          512KB

        • memory/2940-14-0x000007FEF2380000-0x000007FEF2D1D000-memory.dmp

          Filesize

          9.6MB

        • memory/2940-12-0x0000000002810000-0x0000000002890000-memory.dmp

          Filesize

          512KB

        • memory/2940-10-0x000007FEF2380000-0x000007FEF2D1D000-memory.dmp

          Filesize

          9.6MB

        • memory/2940-11-0x0000000002810000-0x0000000002890000-memory.dmp

          Filesize

          512KB

        • memory/2940-9-0x0000000002810000-0x0000000002890000-memory.dmp

          Filesize

          512KB

        • memory/2940-8-0x000007FEF2380000-0x000007FEF2D1D000-memory.dmp

          Filesize

          9.6MB

        • memory/2940-7-0x00000000028E0000-0x00000000028E8000-memory.dmp

          Filesize

          32KB

        • memory/2940-6-0x000000001B670000-0x000000001B952000-memory.dmp

          Filesize

          2.9MB