Analysis

  • max time kernel
    135s
  • max time network
    144s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    02/04/2024, 13:51

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 4 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Drops startup file 2 IoCs
  • Executes dropped EXE 2 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 8 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 21 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:2068
    • 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:1716
    • 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:2856
    • 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:2536
    • 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:2372
    • 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:1556
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {B62BAF0A-9A0F-46D0-AD4D-FD28F1E480EC} S-1-5-21-330940541-141609230-1670313778-1000:KXIPPCKF\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1388
    • C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe
      C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1152
    • C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe
      C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1676

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\590aee7bdd69b59b.customDestinations-ms

          Filesize

          7KB

          MD5

          44d44f074e2f11ed44ceb3ada054c8a2

          SHA1

          5c9d7e1cd3caad7aa5545634a6cc817b5698c724

          SHA256

          d5d4ae1cc9b2332132fa103cc159df05ab578a197cd2603fc42b72157cf26943

          SHA512

          85b327b530227ec4e8da4f50079520e185e050f7995fbaa53da3aa7e9805baf6ef88a6982842ecfaf10d126f2a757d75a2d252a7bc580eba0a2f94ba49b5df24

        • memory/1152-63-0x0000000000A80000-0x0000000000A98000-memory.dmp

          Filesize

          96KB

        • memory/1152-64-0x000007FEF5B00000-0x000007FEF64EC000-memory.dmp

          Filesize

          9.9MB

        • memory/1152-65-0x000007FEF5B00000-0x000007FEF64EC000-memory.dmp

          Filesize

          9.9MB

        • memory/1676-67-0x00000000001F0000-0x0000000000208000-memory.dmp

          Filesize

          96KB

        • memory/1676-68-0x000007FEF5B00000-0x000007FEF64EC000-memory.dmp

          Filesize

          9.9MB

        • memory/1676-69-0x000007FEF5B00000-0x000007FEF64EC000-memory.dmp

          Filesize

          9.9MB

        • memory/1716-11-0x00000000027B0000-0x0000000002830000-memory.dmp

          Filesize

          512KB

        • memory/1716-6-0x000000001B420000-0x000000001B702000-memory.dmp

          Filesize

          2.9MB

        • memory/1716-12-0x00000000027B0000-0x0000000002830000-memory.dmp

          Filesize

          512KB

        • memory/1716-13-0x000007FEF21F0000-0x000007FEF2B8D000-memory.dmp

          Filesize

          9.6MB

        • memory/1716-10-0x000007FEF21F0000-0x000007FEF2B8D000-memory.dmp

          Filesize

          9.6MB

        • memory/1716-9-0x00000000027B0000-0x0000000002830000-memory.dmp

          Filesize

          512KB

        • memory/1716-8-0x000007FEF21F0000-0x000007FEF2B8D000-memory.dmp

          Filesize

          9.6MB

        • memory/1716-7-0x0000000002050000-0x0000000002058000-memory.dmp

          Filesize

          32KB

        • memory/2068-1-0x000007FEF5B00000-0x000007FEF64EC000-memory.dmp

          Filesize

          9.9MB

        • memory/2068-58-0x0000000000570000-0x00000000005F0000-memory.dmp

          Filesize

          512KB

        • memory/2068-57-0x0000000000570000-0x00000000005F0000-memory.dmp

          Filesize

          512KB

        • memory/2068-0-0x0000000001140000-0x0000000001158000-memory.dmp

          Filesize

          96KB

        • memory/2068-39-0x000007FEF5B00000-0x000007FEF64EC000-memory.dmp

          Filesize

          9.9MB

        • memory/2372-46-0x000007FEEF420000-0x000007FEEFDBD000-memory.dmp

          Filesize

          9.6MB

        • memory/2372-52-0x000007FEEF420000-0x000007FEEFDBD000-memory.dmp

          Filesize

          9.6MB

        • memory/2372-51-0x00000000028B0000-0x0000000002930000-memory.dmp

          Filesize

          512KB

        • memory/2372-50-0x00000000028B0000-0x0000000002930000-memory.dmp

          Filesize

          512KB

        • memory/2372-48-0x000007FEEF420000-0x000007FEEFDBD000-memory.dmp

          Filesize

          9.6MB

        • memory/2372-49-0x00000000028B0000-0x0000000002930000-memory.dmp

          Filesize

          512KB

        • memory/2372-47-0x00000000028B0000-0x0000000002930000-memory.dmp

          Filesize

          512KB

        • memory/2536-35-0x000007FEF21F0000-0x000007FEF2B8D000-memory.dmp

          Filesize

          9.6MB

        • memory/2536-40-0x000007FEF21F0000-0x000007FEF2B8D000-memory.dmp

          Filesize

          9.6MB

        • memory/2536-38-0x0000000002530000-0x00000000025B0000-memory.dmp

          Filesize

          512KB

        • memory/2536-37-0x0000000002530000-0x00000000025B0000-memory.dmp

          Filesize

          512KB

        • memory/2536-36-0x0000000002530000-0x00000000025B0000-memory.dmp

          Filesize

          512KB

        • memory/2536-34-0x0000000002530000-0x00000000025B0000-memory.dmp

          Filesize

          512KB

        • memory/2536-33-0x000007FEF21F0000-0x000007FEF2B8D000-memory.dmp

          Filesize

          9.6MB

        • memory/2856-27-0x000007FEEF420000-0x000007FEEFDBD000-memory.dmp

          Filesize

          9.6MB

        • memory/2856-26-0x0000000002650000-0x00000000026D0000-memory.dmp

          Filesize

          512KB

        • memory/2856-25-0x0000000002650000-0x00000000026D0000-memory.dmp

          Filesize

          512KB

        • memory/2856-24-0x0000000002650000-0x00000000026D0000-memory.dmp

          Filesize

          512KB

        • memory/2856-23-0x000007FEEF420000-0x000007FEEFDBD000-memory.dmp

          Filesize

          9.6MB

        • memory/2856-22-0x0000000002650000-0x00000000026D0000-memory.dmp

          Filesize

          512KB

        • memory/2856-21-0x000007FEEF420000-0x000007FEEFDBD000-memory.dmp

          Filesize

          9.6MB

        • memory/2856-20-0x0000000001DE0000-0x0000000001DE8000-memory.dmp

          Filesize

          32KB

        • memory/2856-19-0x000000001B1E0000-0x000000001B4C2000-memory.dmp

          Filesize

          2.9MB