Analysis

  • max time kernel
    148s
  • max time network
    150s
  • 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, 13:38

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 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:3924
    • 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:3908
    • 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:2696
    • 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:4132
    • 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:4188
    • 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:2332
  • C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe
    C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:740
  • C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe
    C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:1924
  • C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe
    C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:1132

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

          2e907f77659a6601fcc408274894da2e

          SHA1

          9f5b72abef1cd7145bf37547cdb1b9254b4efe9d

          SHA256

          385da35673330e21ac02545220552fe301fe54dedefbdafc097ac4342a295233

          SHA512

          34fa0fff24f6550f55f828541aaefe5d75c86f8f0842d54b50065e9746f9662bb7209c74c9a9571540b9855bb3851f01db613190024e89b198d485bb5dc07721

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

          Filesize

          944B

          MD5

          67e8893616f805af2411e2f4a1411b2a

          SHA1

          39bf1e1a0ddf46ce7c136972120f512d92827dcd

          SHA256

          ca0dfe104c1bf27f7e01999fcdabc16c6400c3da937c832c26bdbca322381d31

          SHA512

          164e911a9935e75c8be1a6ec3d31199a16ba2a1064da6c09d771b2a38dd7fddd142301ef55d67d90f306d3a454a1ce7b72e129ea42e44500b9b8c623a8d98b4d

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

          Filesize

          944B

          MD5

          10fb30dc297f99d6ebafa5fee8b24fa2

          SHA1

          76904509313a49a765edcde26b69c3a61f9fa225

          SHA256

          567bcacac120711fc04bf8e6c8cd0bff7b61e8ee0a6316254d1005ebb1264e6a

          SHA512

          c42ace1ea0923fa55592f4f486a508ea56997fdbe0200016b0fc16a33452fc28e4530129a315b3b3a5ede37a07097c13a0eb310c9e91e5d97bb7ce7b955b9498

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ibs3e2im.aqr.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/740-74-0x00007FF9B0C90000-0x00007FF9B1751000-memory.dmp

          Filesize

          10.8MB

        • memory/740-76-0x00007FF9B0C90000-0x00007FF9B1751000-memory.dmp

          Filesize

          10.8MB

        • memory/1132-83-0x00007FF9B0C90000-0x00007FF9B1751000-memory.dmp

          Filesize

          10.8MB

        • memory/1924-80-0x00007FF9B0C90000-0x00007FF9B1751000-memory.dmp

          Filesize

          10.8MB

        • memory/1924-81-0x00007FF9B0C90000-0x00007FF9B1751000-memory.dmp

          Filesize

          10.8MB

        • memory/2696-34-0x00007FF9B0C90000-0x00007FF9B1751000-memory.dmp

          Filesize

          10.8MB

        • memory/2696-19-0x00007FF9B0C90000-0x00007FF9B1751000-memory.dmp

          Filesize

          10.8MB

        • memory/2696-32-0x000001F950250000-0x000001F950260000-memory.dmp

          Filesize

          64KB

        • memory/2696-26-0x000001F950250000-0x000001F950260000-memory.dmp

          Filesize

          64KB

        • memory/2696-25-0x000001F950250000-0x000001F950260000-memory.dmp

          Filesize

          64KB

        • memory/3908-17-0x00007FF9B0C90000-0x00007FF9B1751000-memory.dmp

          Filesize

          10.8MB

        • memory/3908-8-0x000001FC5D050000-0x000001FC5D072000-memory.dmp

          Filesize

          136KB

        • memory/3908-9-0x000001FC5D080000-0x000001FC5D090000-memory.dmp

          Filesize

          64KB

        • memory/3908-2-0x00007FF9B0C90000-0x00007FF9B1751000-memory.dmp

          Filesize

          10.8MB

        • memory/3908-10-0x000001FC5D080000-0x000001FC5D090000-memory.dmp

          Filesize

          64KB

        • memory/3924-0-0x0000000000510000-0x0000000000528000-memory.dmp

          Filesize

          96KB

        • memory/3924-1-0x00007FF9B0C90000-0x00007FF9B1751000-memory.dmp

          Filesize

          10.8MB

        • memory/3924-62-0x00007FF9B0C90000-0x00007FF9B1751000-memory.dmp

          Filesize

          10.8MB

        • memory/3924-73-0x000000001B200000-0x000000001B210000-memory.dmp

          Filesize

          64KB

        • memory/3924-70-0x000000001B200000-0x000000001B210000-memory.dmp

          Filesize

          64KB

        • memory/4132-49-0x00007FF9B0C90000-0x00007FF9B1751000-memory.dmp

          Filesize

          10.8MB

        • memory/4132-47-0x0000016427D00000-0x0000016427D10000-memory.dmp

          Filesize

          64KB

        • memory/4132-44-0x00007FF9B0C90000-0x00007FF9B1751000-memory.dmp

          Filesize

          10.8MB

        • memory/4132-46-0x0000016427D00000-0x0000016427D10000-memory.dmp

          Filesize

          64KB

        • memory/4188-65-0x00007FF9B0C90000-0x00007FF9B1751000-memory.dmp

          Filesize

          10.8MB

        • memory/4188-63-0x0000017DB3640000-0x0000017DB3650000-memory.dmp

          Filesize

          64KB

        • memory/4188-61-0x0000017DB3640000-0x0000017DB3650000-memory.dmp

          Filesize

          64KB

        • memory/4188-60-0x00007FF9B0C90000-0x00007FF9B1751000-memory.dmp

          Filesize

          10.8MB