Analysis

  • max time kernel
    150s
  • max time network
    141s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-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 2 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 9 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 10 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⤵
    • Checks computer location settings
    • 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:4892
    • 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:4872
    • 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:2304
    • 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:4576
    • 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:64
    • 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:4960
  • C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe
    C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:4592
  • C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe
    C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:4792
  • C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe
    C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:388

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\WindowsHealthSystem.exe.log

          Filesize

          654B

          MD5

          2ff39f6c7249774be85fd60a8f9a245e

          SHA1

          684ff36b31aedc1e587c8496c02722c6698c1c4e

          SHA256

          e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

          SHA512

          1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

        • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

          Filesize

          2KB

          MD5

          d85ba6ff808d9e5444a4b369f5bc2730

          SHA1

          31aa9d96590fff6981b315e0b391b575e4c0804a

          SHA256

          84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

          SHA512

          8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

        • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

          Filesize

          944B

          MD5

          bd5940f08d0be56e65e5f2aaf47c538e

          SHA1

          d7e31b87866e5e383ab5499da64aba50f03e8443

          SHA256

          2d2f364c75bd2897504249f42cdf1d19374f5230aad68fa9154ea3d03e3031a6

          SHA512

          c34d10c7e07da44a180fae9889b61f08903aa84e8ddfa80c31c272b1ef9d491b8cec6b8a4c836c3cb1583fe8f4955c6a8db872515de3a9e10eae09610c959406

        • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

          Filesize

          944B

          MD5

          f41f42c322498af0591f396c59dd4304

          SHA1

          e1e5aa68d73d48bc5e743a34f6c0fa8960ff7514

          SHA256

          d8bd9a4a363ff2ac2dc887759ec6ba4215a4ce0925a8fb9c531573458ee4a31c

          SHA512

          2328a1b402b4fb0de9c451fb630eab58549129d3bcfb70b9834cfbd16065ebaadec006b309ea17ac182d34c53e01705cbc9e0196eb0cbd62600c866e79a1844f

        • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

          Filesize

          944B

          MD5

          96e3b86880fedd5afc001d108732a3e5

          SHA1

          8fc17b39d744a9590a6d5897012da5e6757439a3

          SHA256

          c3077e4cadb4ed246c02abe55aa6cf832fee4c2546b7addb7d22cd1c7c8c1294

          SHA512

          909b1968f7204fa7029109b02232d8cc5438f6b4dc7c9044e4e47c59fcee538199b13029e36592b12ed573d48a308dd4822d2ced4129ab08d4111897e02be55d

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_mzomhcji.f51.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

          Filesize

          70KB

          MD5

          109adf5a32829b151d536e30a81ee96b

          SHA1

          dc23006a97e7d5bc34eedec563432e63ed6a226a

          SHA256

          4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311

          SHA512

          74e7fb13e195dcf6b8ed0f40c034925c3762b2e0c43c8faede99ce79a4b07966ff5336769db3f9f5bb4c0478cefc879d59b43d5ded5bda3e75d19bd0a1e9e9e5

        • memory/64-66-0x00007FFF27130000-0x00007FFF27BF1000-memory.dmp

          Filesize

          10.8MB

        • memory/64-62-0x000001AF73770000-0x000001AF73780000-memory.dmp

          Filesize

          64KB

        • memory/64-57-0x000001AF73770000-0x000001AF73780000-memory.dmp

          Filesize

          64KB

        • memory/64-51-0x00007FFF27130000-0x00007FFF27BF1000-memory.dmp

          Filesize

          10.8MB

        • memory/388-83-0x00007FFF27130000-0x00007FFF27BF1000-memory.dmp

          Filesize

          10.8MB

        • memory/388-84-0x00007FFF27130000-0x00007FFF27BF1000-memory.dmp

          Filesize

          10.8MB

        • memory/2304-19-0x00007FFF27130000-0x00007FFF27BF1000-memory.dmp

          Filesize

          10.8MB

        • memory/2304-34-0x00007FFF27130000-0x00007FFF27BF1000-memory.dmp

          Filesize

          10.8MB

        • memory/2304-32-0x00000248E9080000-0x00000248E9090000-memory.dmp

          Filesize

          64KB

        • memory/2304-21-0x00000248E9080000-0x00000248E9090000-memory.dmp

          Filesize

          64KB

        • memory/2304-20-0x00000248E9080000-0x00000248E9090000-memory.dmp

          Filesize

          64KB

        • memory/4576-42-0x000001BCD3250000-0x000001BCD3260000-memory.dmp

          Filesize

          64KB

        • memory/4576-35-0x00007FFF27130000-0x00007FFF27BF1000-memory.dmp

          Filesize

          10.8MB

        • memory/4576-46-0x000001BCD3250000-0x000001BCD3260000-memory.dmp

          Filesize

          64KB

        • memory/4576-48-0x000001BCD3250000-0x000001BCD3260000-memory.dmp

          Filesize

          64KB

        • memory/4576-50-0x00007FFF27130000-0x00007FFF27BF1000-memory.dmp

          Filesize

          10.8MB

        • memory/4592-74-0x00007FFF27130000-0x00007FFF27BF1000-memory.dmp

          Filesize

          10.8MB

        • memory/4592-76-0x00007FFF27130000-0x00007FFF27BF1000-memory.dmp

          Filesize

          10.8MB

        • memory/4792-80-0x00007FFF27130000-0x00007FFF27BF1000-memory.dmp

          Filesize

          10.8MB

        • memory/4792-81-0x00007FFF27130000-0x00007FFF27BF1000-memory.dmp

          Filesize

          10.8MB

        • memory/4872-17-0x00007FFF27130000-0x00007FFF27BF1000-memory.dmp

          Filesize

          10.8MB

        • memory/4872-3-0x0000015BFDC10000-0x0000015BFDC20000-memory.dmp

          Filesize

          64KB

        • memory/4872-11-0x0000015BFDC70000-0x0000015BFDC92000-memory.dmp

          Filesize

          136KB

        • memory/4872-9-0x0000015BFDC10000-0x0000015BFDC20000-memory.dmp

          Filesize

          64KB

        • memory/4872-2-0x00007FFF27130000-0x00007FFF27BF1000-memory.dmp

          Filesize

          10.8MB

        • memory/4892-63-0x00007FFF27130000-0x00007FFF27BF1000-memory.dmp

          Filesize

          10.8MB

        • memory/4892-71-0x000000001B6D0000-0x000000001B6E0000-memory.dmp

          Filesize

          64KB

        • memory/4892-0-0x00000000008B0000-0x00000000008C8000-memory.dmp

          Filesize

          96KB

        • memory/4892-1-0x00007FFF27130000-0x00007FFF27BF1000-memory.dmp

          Filesize

          10.8MB