Analysis

  • max time kernel
    145s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    02/04/2024, 13:14

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:1884
    • 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:2740
    • 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:2608
    • 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:2760
    • 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:2472
    • 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:2188
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {7F6BAC4B-B648-4C24-BD18-CF6D0D0D4918} S-1-5-21-3627615824-4061627003-3019543961-1000:SCFGBRBT\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1072
    • C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe
      C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2344
    • C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe
      C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1436
    • C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe
      C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2044

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\80HESYX3C5UP1X6KZ6SO.temp

          Filesize

          7KB

          MD5

          9f51162bf0d832581dab77ccb76a482f

          SHA1

          4f7a952c3e46e5998bab2bf53ec431b2e80a5af4

          SHA256

          c7a32331444d946002c74952f14ff2251784f5ed345d9f96c779ba8af626eb4b

          SHA512

          cad0fa96e29ebd75c6c6378f89c46053add2539b6c318571b65b03c023090d0b39062e457814b3f4f7c161485247888750e4e6a4b8badc3a8f85c455aaf7a980

        • memory/1436-69-0x000007FEF5B50000-0x000007FEF653C000-memory.dmp

          Filesize

          9.9MB

        • memory/1436-67-0x00000000003E0000-0x00000000003F8000-memory.dmp

          Filesize

          96KB

        • memory/1436-68-0x000007FEF5B50000-0x000007FEF653C000-memory.dmp

          Filesize

          9.9MB

        • memory/1884-45-0x000007FEF5B50000-0x000007FEF653C000-memory.dmp

          Filesize

          9.9MB

        • memory/1884-64-0x000000001B190000-0x000000001B210000-memory.dmp

          Filesize

          512KB

        • memory/1884-56-0x000000001B190000-0x000000001B210000-memory.dmp

          Filesize

          512KB

        • memory/1884-0-0x0000000000EB0000-0x0000000000EC8000-memory.dmp

          Filesize

          96KB

        • memory/1884-1-0x000007FEF5B50000-0x000007FEF653C000-memory.dmp

          Filesize

          9.9MB

        • memory/2044-71-0x0000000000160000-0x0000000000178000-memory.dmp

          Filesize

          96KB

        • memory/2044-72-0x000007FEF5B50000-0x000007FEF653C000-memory.dmp

          Filesize

          9.9MB

        • memory/2044-73-0x000007FEF5B50000-0x000007FEF653C000-memory.dmp

          Filesize

          9.9MB

        • memory/2344-61-0x000007FEF5B50000-0x000007FEF653C000-memory.dmp

          Filesize

          9.9MB

        • memory/2344-60-0x0000000001290000-0x00000000012A8000-memory.dmp

          Filesize

          96KB

        • memory/2344-62-0x000007FEF5B50000-0x000007FEF653C000-memory.dmp

          Filesize

          9.9MB

        • memory/2472-44-0x000007FEEFC90000-0x000007FEF062D000-memory.dmp

          Filesize

          9.6MB

        • memory/2472-47-0x000007FEEFC90000-0x000007FEF062D000-memory.dmp

          Filesize

          9.6MB

        • memory/2472-49-0x0000000002A7B000-0x0000000002AE2000-memory.dmp

          Filesize

          412KB

        • memory/2472-51-0x0000000002A70000-0x0000000002AF0000-memory.dmp

          Filesize

          512KB

        • memory/2472-50-0x0000000002A70000-0x0000000002AF0000-memory.dmp

          Filesize

          512KB

        • memory/2472-48-0x000007FEEFC90000-0x000007FEF062D000-memory.dmp

          Filesize

          9.6MB

        • memory/2472-63-0x0000000002A70000-0x0000000002AF0000-memory.dmp

          Filesize

          512KB

        • memory/2472-46-0x0000000002A70000-0x0000000002AF0000-memory.dmp

          Filesize

          512KB

        • memory/2608-20-0x000000001B550000-0x000000001B832000-memory.dmp

          Filesize

          2.9MB

        • memory/2608-26-0x0000000002C50000-0x0000000002CD0000-memory.dmp

          Filesize

          512KB

        • memory/2608-22-0x000007FEEFC90000-0x000007FEF062D000-memory.dmp

          Filesize

          9.6MB

        • memory/2608-21-0x0000000002720000-0x0000000002728000-memory.dmp

          Filesize

          32KB

        • memory/2608-23-0x0000000002C50000-0x0000000002CD0000-memory.dmp

          Filesize

          512KB

        • memory/2608-25-0x0000000002C50000-0x0000000002CD0000-memory.dmp

          Filesize

          512KB

        • memory/2608-24-0x000007FEEFC90000-0x000007FEF062D000-memory.dmp

          Filesize

          9.6MB

        • memory/2608-27-0x000007FEEFC90000-0x000007FEF062D000-memory.dmp

          Filesize

          9.6MB

        • memory/2740-13-0x0000000002BB0000-0x0000000002C30000-memory.dmp

          Filesize

          512KB

        • memory/2740-10-0x000007FEF2240000-0x000007FEF2BDD000-memory.dmp

          Filesize

          9.6MB

        • memory/2740-6-0x000000001B780000-0x000000001BA62000-memory.dmp

          Filesize

          2.9MB

        • memory/2740-8-0x000007FEF2240000-0x000007FEF2BDD000-memory.dmp

          Filesize

          9.6MB

        • memory/2740-7-0x00000000028E0000-0x00000000028E8000-memory.dmp

          Filesize

          32KB

        • memory/2740-9-0x0000000002BB0000-0x0000000002C30000-memory.dmp

          Filesize

          512KB

        • memory/2740-14-0x000007FEF2240000-0x000007FEF2BDD000-memory.dmp

          Filesize

          9.6MB

        • memory/2740-12-0x0000000002BB0000-0x0000000002C30000-memory.dmp

          Filesize

          512KB

        • memory/2740-11-0x0000000002BB0000-0x0000000002C30000-memory.dmp

          Filesize

          512KB

        • memory/2760-35-0x000007FEF2240000-0x000007FEF2BDD000-memory.dmp

          Filesize

          9.6MB

        • memory/2760-33-0x000007FEF2240000-0x000007FEF2BDD000-memory.dmp

          Filesize

          9.6MB

        • memory/2760-37-0x00000000028A0000-0x0000000002920000-memory.dmp

          Filesize

          512KB

        • memory/2760-38-0x000007FEF2240000-0x000007FEF2BDD000-memory.dmp

          Filesize

          9.6MB

        • memory/2760-36-0x00000000028A0000-0x0000000002920000-memory.dmp

          Filesize

          512KB

        • memory/2760-34-0x00000000028A0000-0x0000000002920000-memory.dmp

          Filesize

          512KB