Analysis

  • max time kernel
    147s
  • max time network
    156s
  • 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, 13:14

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 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 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 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 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:408
    • 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:3920
    • 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:2916
    • 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:5108
    • 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:1980
    • 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:3888
  • C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe
    C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:3568
  • C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe
    C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:4028

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

          d28a889fd956d5cb3accfbaf1143eb6f

          SHA1

          157ba54b365341f8ff06707d996b3635da8446f7

          SHA256

          21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

          SHA512

          0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

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

          Filesize

          944B

          MD5

          9bc110200117a3752313ca2acaf8a9e1

          SHA1

          fda6b7da2e7b0175b391475ca78d1b4cf2147cd3

          SHA256

          c88e4bbb64f7fa31429ebe82c1cf07785c44486f37576f783a26ac856e02a4eb

          SHA512

          1f1af32aa18a8cbfcc65b0d4fb7e6ca2705f125eaa85789e981ee68b90c64522e954825abf460d4b4f97567715dfae8d9b0a25a4d54d10bc4c257c472f2e80fb

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

          Filesize

          944B

          MD5

          15dde0683cd1ca19785d7262f554ba93

          SHA1

          d039c577e438546d10ac64837b05da480d06bf69

          SHA256

          d6fa39eab7ee36f44dc3f9f2839d098433db95c1eba924e4bcf4e5c0d268d961

          SHA512

          57c0e1b87bc1c136f0d39f3ce64bb8f8274a0491e4ca6e45e5c7f9070aa9d9370c6f590ce37cd600b252df2638d870205249a514c43245ca7ed49017024a4672

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_z101hmjq.foj.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/408-33-0x00007FFD3F220000-0x00007FFD3FCE1000-memory.dmp

          Filesize

          10.8MB

        • memory/408-74-0x000000001B7A0000-0x000000001B7B0000-memory.dmp

          Filesize

          64KB

        • memory/408-1-0x00007FFD3F220000-0x00007FFD3FCE1000-memory.dmp

          Filesize

          10.8MB

        • memory/408-0-0x0000000000A60000-0x0000000000A78000-memory.dmp

          Filesize

          96KB

        • memory/1980-63-0x00007FFD3F220000-0x00007FFD3FCE1000-memory.dmp

          Filesize

          10.8MB

        • memory/1980-67-0x000001E29BB50000-0x000001E29BB60000-memory.dmp

          Filesize

          64KB

        • memory/1980-64-0x000001E29BB50000-0x000001E29BB60000-memory.dmp

          Filesize

          64KB

        • memory/1980-69-0x00007FFD3F220000-0x00007FFD3FCE1000-memory.dmp

          Filesize

          10.8MB

        • memory/1980-65-0x000001E29BB50000-0x000001E29BB60000-memory.dmp

          Filesize

          64KB

        • memory/2916-22-0x0000020BDF920000-0x0000020BDF930000-memory.dmp

          Filesize

          64KB

        • memory/2916-21-0x00007FFD3F220000-0x00007FFD3FCE1000-memory.dmp

          Filesize

          10.8MB

        • memory/2916-34-0x0000020BDF920000-0x0000020BDF930000-memory.dmp

          Filesize

          64KB

        • memory/2916-36-0x00007FFD3F220000-0x00007FFD3FCE1000-memory.dmp

          Filesize

          10.8MB

        • memory/3568-78-0x00007FFD3F220000-0x00007FFD3FCE1000-memory.dmp

          Filesize

          10.8MB

        • memory/3568-80-0x00007FFD3F220000-0x00007FFD3FCE1000-memory.dmp

          Filesize

          10.8MB

        • memory/3920-19-0x00007FFD3F220000-0x00007FFD3FCE1000-memory.dmp

          Filesize

          10.8MB

        • memory/3920-4-0x000001EEB4800000-0x000001EEB4810000-memory.dmp

          Filesize

          64KB

        • memory/3920-2-0x00007FFD3F220000-0x00007FFD3FCE1000-memory.dmp

          Filesize

          10.8MB

        • memory/3920-3-0x000001EEB4800000-0x000001EEB4810000-memory.dmp

          Filesize

          64KB

        • memory/3920-14-0x000001EEB68B0000-0x000001EEB68D2000-memory.dmp

          Filesize

          136KB

        • memory/3920-15-0x000001EEB4800000-0x000001EEB4810000-memory.dmp

          Filesize

          64KB

        • memory/3920-16-0x000001EEB4800000-0x000001EEB4810000-memory.dmp

          Filesize

          64KB

        • memory/4028-83-0x00007FFD3F220000-0x00007FFD3FCE1000-memory.dmp

          Filesize

          10.8MB

        • memory/4028-84-0x00007FFD3F220000-0x00007FFD3FCE1000-memory.dmp

          Filesize

          10.8MB

        • memory/5108-47-0x0000015DDD3A0000-0x0000015DDD3B0000-memory.dmp

          Filesize

          64KB

        • memory/5108-46-0x00007FFD3F220000-0x00007FFD3FCE1000-memory.dmp

          Filesize

          10.8MB

        • memory/5108-49-0x0000015DDD3A0000-0x0000015DDD3B0000-memory.dmp

          Filesize

          64KB

        • memory/5108-53-0x00007FFD3F220000-0x00007FFD3FCE1000-memory.dmp

          Filesize

          10.8MB

        • memory/5108-50-0x0000015DDD3A0000-0x0000015DDD3B0000-memory.dmp

          Filesize

          64KB

        • memory/5108-51-0x0000015DDD3A0000-0x0000015DDD3B0000-memory.dmp

          Filesize

          64KB