Analysis

  • max time kernel
    1548s
  • max time network
    1798s
  • platform
    windows11-21h2_x64
  • resource
    win11-20241007-en
  • resource tags

    arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    10-11-2024 01:38

General

  • Target

    XClient.exe

  • Size

    43KB

  • MD5

    7e71f66eb4bd975fa6894f7be63d9de7

  • SHA1

    a0b6a69adffde7a5209498ce1656f0d406da9204

  • SHA256

    89055b8db329f28180bdd72d02227f175a46b79b470c5131e932d235104ab6e1

  • SHA512

    5a776de6708ffa802700febe9a6a1cd95cd907f8d435c7ea28644c3c31565e373223b8db05ca142cb5bdc0d13745fba03099edbfc2fe7f9095232a997cdf6bf1

  • SSDEEP

    768:vSniTSIuNNk3MO56kjBbvSevz5zbbTf8EmZPcBH6clOQhAGb:oiT9n6k5zbHf8PZP8H6OOQC8

Malware Config

Extracted

Family

xworm

Version

3.1

C2

147.185.221.23:53631

Attributes
  • Install_directory

    %AppData%

  • install_file

    USB.exe

Signatures

  • Contains code to disable Windows Defender 1 IoCs

    A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

  • Detect Xworm Payload 2 IoCs
  • UAC bypass 3 TTPs 1 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Xworm family
  • Command and Scripting Interpreter: PowerShell 1 TTPs 9 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Drops startup file 4 IoCs
  • Executes dropped EXE 8 IoCs
  • Adds Run key to start application 2 TTPs 3 IoCs
  • Enumerates connected drives 3 TTPs 1 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Kills process with taskkill 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 18 IoCs
  • Suspicious use of AdjustPrivilegeToken 21 IoCs
  • Suspicious use of FindShellTrayWindow 8 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs
  • System policy modification 1 TTPs 2 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\XClient.exe
    "C:\Users\Admin\AppData\Local\Temp\XClient.exe"
    1⤵
    • UAC bypass
    • Drops startup file
    • Adds Run key to start application
    • Enumerates connected drives
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:2000
    • 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\XClient.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1156
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3652
    • 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\Roaming\XClient.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3352
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XClient" /tr "C:\Users\Admin\AppData\Roaming\XClient.exe"
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:4584
    • C:\Windows\SYSTEM32\taskkill.exe
      taskkill /F /IM explorer.exe
      2⤵
      • Kills process with taskkill
      • Suspicious use of AdjustPrivilegeToken
      PID:2160
  • C:\Users\Admin\AppData\Roaming\XClient.exe
    C:\Users\Admin\AppData\Roaming\XClient.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:1504
  • C:\Windows\system32\AUDIODG.EXE
    C:\Windows\system32\AUDIODG.EXE 0x00000000000004D4 0x00000000000004E8
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:900
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s DisplayEnhancementService
    1⤵
      PID:4884
    • C:\Users\Admin\AppData\Roaming\XClient.exe
      C:\Users\Admin\AppData\Roaming\XClient.exe
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2412
    • C:\Users\Admin\AppData\Roaming\XClient.exe
      C:\Users\Admin\AppData\Roaming\XClient.exe
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2932
    • C:\Users\Admin\AppData\Roaming\XClient.exe
      C:\Users\Admin\AppData\Roaming\XClient.exe
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2588
    • C:\Users\Admin\AppData\Roaming\XClient.exe
      C:\Users\Admin\AppData\Roaming\XClient.exe
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:3112
    • C:\Users\Admin\AppData\Roaming\XClient.exe
      C:\Users\Admin\AppData\Roaming\XClient.exe
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:4588
    • C:\Users\Admin\AppData\Roaming\XClient.exe
      C:\Users\Admin\AppData\Roaming\XClient.exe
      1⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4768
      • 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\Roaming\XClient.exe'
        2⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2200
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
        2⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4784
      • 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\Roaming\XClient.exe'
        2⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3396
      • C:\Windows\System32\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XClient" /tr "C:\Users\Admin\AppData\Roaming\XClient.exe"
        2⤵
        • Scheduled Task/Job: Scheduled Task
        PID:3368
    • C:\Users\Admin\AppData\Roaming\XClient.exe
      C:\Users\Admin\AppData\Roaming\XClient.exe
      1⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1984
      • 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\Roaming\XClient.exe'
        2⤵
        • Command and Scripting Interpreter: PowerShell
        • 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 'XClient.exe'
        2⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4804
      • 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\Roaming\XClient.exe'
        2⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:820
      • C:\Windows\System32\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XClient" /tr "C:\Users\Admin\AppData\Roaming\XClient.exe"
        2⤵
        • Scheduled Task/Job: Scheduled Task
        PID:4708

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

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

      Filesize

      654B

      MD5

      2cbbb74b7da1f720b48ed31085cbd5b8

      SHA1

      79caa9a3ea8abe1b9c4326c3633da64a5f724964

      SHA256

      e31b18f21621d9983bfdf1ea3e53884a9d58b8ffd79e0e5790da6f3a81a8b9d3

      SHA512

      ecf02d5240e0c1c005d3ab393aa7eff62bd498c2db5905157e2bf6d29e1b663228a9583950842629d1a4caef404c8941a0c7799b1a3bd1eb890a09fdb7efcff9

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

      Filesize

      2KB

      MD5

      627073ee3ca9676911bee35548eff2b8

      SHA1

      4c4b68c65e2cab9864b51167d710aa29ebdcff2e

      SHA256

      85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

      SHA512

      3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

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

      Filesize

      944B

      MD5

      cef328ddb1ee8916e7a658919323edd8

      SHA1

      a676234d426917535e174f85eabe4ef8b88256a5

      SHA256

      a1b5b7ada8ebc910f20f91ada3991d3321104e9da598c958b1edac9f9aca0e90

      SHA512

      747400c20ca5b5fd1b54bc24e75e6a78f15af61df263be932d2ee7b2f34731c2de8ce03b2706954fb098c1ac36f0b761cf37e418738fa91f2a8ea78572f545cb

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

      Filesize

      944B

      MD5

      aa6b748cd8f3e3c0e41549529b919e21

      SHA1

      5a4b9721f9fb5042f6ef7afd698d5ac5216a88bb

      SHA256

      d7d665a42f940443efb28eb231dfe1c4062394e71fba145d6eea9ec075b0f0e8

      SHA512

      361c523f49428a7e430279099e669a1a8af8764653f42e83105c0da3f8e8dd3be6c1719ea8c158d8f2e8425d74457147a4683190eb4a67019b9d02be44c13534

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

      Filesize

      944B

      MD5

      cb9070f7a07a5d3fc17121852bff6953

      SHA1

      1932f99c2039a98cf0d65bca0f882dde0686fc11

      SHA256

      6c908b4ca5b098e166b48a0e821050db43fba7299a6553be2303bee5b89545ac

      SHA512

      97b9fc5ce40b102e2c9334500f6c17625c982ff8e4afaaabd92c2468cd8deface01d7cdfd267c4f10aac123b7a6173fde85d2b531c6f134a3896a8ca5edfe1f8

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

      Filesize

      944B

      MD5

      0b59f3fa12628f63b5713c4833570d7f

      SHA1

      badcf18f1fdc94b1eadf63f27c09ad092c4a6ccb

      SHA256

      2332e52881483559d787508831c00192c4f0a4fedc232b0309e566a30247af1d

      SHA512

      01724fd9f7a20ec5ff3d2686593d5d95069135834e9b156ced36985067fb36e7b3ec2a0018e41fa125ad5d1e42c80be9e148632a9b655f2d41c1400a4320abe7

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

      Filesize

      944B

      MD5

      64497dba662bee5d7ae7a3c76a72ed88

      SHA1

      edc027042b9983f13d074ba9eed8b78e55e4152e

      SHA256

      ca69ebbd2c9c185f0647fb2122d7a26e7d23af06a1950fb25ac327d869687b47

      SHA512

      25da69ec86ba0df6c7da60f722cc2919c59c91f2bb03137e0e87771936e5271522d48eef98030a0da41f7a707d82221d35fb016f8bb9a294e87be114adbe3522

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

      Filesize

      944B

      MD5

      2e8eb51096d6f6781456fef7df731d97

      SHA1

      ec2aaf851a618fb43c3d040a13a71997c25bda43

      SHA256

      96bfd9dd5883329927fe8c08b8956355a1a6ceb30ceeb5d4252b346df32bc864

      SHA512

      0a73dc9a49f92d9dd556c2ca2e36761890b3538f355ee1f013e7cf648d8c4d065f28046cd4a167db3dea304d1fbcbcea68d11ce6e12a3f20f8b6c018a60422d2

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

      Filesize

      944B

      MD5

      a4be454dcbec32af10161f739ec237fc

      SHA1

      44d5b3b34f92818563efeb37dc75442273cc2bf3

      SHA256

      4436e1add60e37baccc40f44b93b8ee2baf4261b5e3e45a834ba350ec9658f15

      SHA512

      a925de5c086cb81b50136d78dc7aea45f8205b57ae8b6219f3d00016b33ebec7e85d7630baf0c09ec2ed29a87c68f0cdefcfd21eb7e99a5679dc632cb725fc4f

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_d5ycxh0g.hhr.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk

      Filesize

      771B

      MD5

      8760f472d96c2fc163b52dc5cb6dc918

      SHA1

      e73a7deac591b92fefc155999879322293fb5eeb

      SHA256

      bd38ac218eb8aa0092c9ad801072a9350d965f64abb60bcf4b6779e2f772322d

      SHA512

      a4e690bc3b1830265f00e4db07ad8c1c2c3088bf3e5d7d8ce61461bffc48cd9ab05685cd4924ee931d68335da9cba8ec8d8ba7f8c482762368da55a018cc1d8b

    • C:\Users\Admin\AppData\Roaming\XClient.exe

      Filesize

      43KB

      MD5

      7e71f66eb4bd975fa6894f7be63d9de7

      SHA1

      a0b6a69adffde7a5209498ce1656f0d406da9204

      SHA256

      89055b8db329f28180bdd72d02227f175a46b79b470c5131e932d235104ab6e1

      SHA512

      5a776de6708ffa802700febe9a6a1cd95cd907f8d435c7ea28644c3c31565e373223b8db05ca142cb5bdc0d13745fba03099edbfc2fe7f9095232a997cdf6bf1

    • memory/1156-11-0x00007FFA94BD0000-0x00007FFA95692000-memory.dmp

      Filesize

      10.8MB

    • memory/1156-18-0x00007FFA94BD0000-0x00007FFA95692000-memory.dmp

      Filesize

      10.8MB

    • memory/1156-17-0x00000206E4CB0000-0x00000206E4DFF000-memory.dmp

      Filesize

      1.3MB

    • memory/1156-14-0x00007FFA94BD0000-0x00007FFA95692000-memory.dmp

      Filesize

      10.8MB

    • memory/1156-13-0x00007FFA94BD0000-0x00007FFA95692000-memory.dmp

      Filesize

      10.8MB

    • memory/1156-12-0x00007FFA94BD0000-0x00007FFA95692000-memory.dmp

      Filesize

      10.8MB

    • memory/1156-10-0x00000206E4A40000-0x00000206E4A62000-memory.dmp

      Filesize

      136KB

    • memory/2000-52-0x00007FFA94BD0000-0x00007FFA95692000-memory.dmp

      Filesize

      10.8MB

    • memory/2000-69-0x000000001C3F0000-0x000000001C436000-memory.dmp

      Filesize

      280KB

    • memory/2000-59-0x0000000000890000-0x000000000089A000-memory.dmp

      Filesize

      40KB

    • memory/2000-60-0x00000000009B0000-0x00000000009BE000-memory.dmp

      Filesize

      56KB

    • memory/2000-61-0x000000001C8E0000-0x000000001CE08000-memory.dmp

      Filesize

      5.2MB

    • memory/2000-66-0x000000001C460000-0x000000001C46D000-memory.dmp

      Filesize

      52KB

    • memory/2000-67-0x000000001C790000-0x000000001C7AE000-memory.dmp

      Filesize

      120KB

    • memory/2000-68-0x000000001C470000-0x000000001C47B000-memory.dmp

      Filesize

      44KB

    • memory/2000-65-0x000000001C3F0000-0x000000001C436000-memory.dmp

      Filesize

      280KB

    • memory/2000-57-0x000000001ADA0000-0x000000001ADAC000-memory.dmp

      Filesize

      48KB

    • memory/2000-53-0x000000001AF70000-0x000000001AF7A000-memory.dmp

      Filesize

      40KB

    • memory/2000-192-0x00007FFA94BD0000-0x00007FFA95692000-memory.dmp

      Filesize

      10.8MB

    • memory/2000-0-0x00007FFA94BD3000-0x00007FFA94BD5000-memory.dmp

      Filesize

      8KB

    • memory/2000-51-0x00007FFA94BD0000-0x00007FFA95692000-memory.dmp

      Filesize

      10.8MB

    • memory/2000-44-0x00007FFA94BD3000-0x00007FFA94BD5000-memory.dmp

      Filesize

      8KB

    • memory/2000-1-0x0000000000120000-0x0000000000132000-memory.dmp

      Filesize

      72KB

    • memory/3352-41-0x00000268C0960000-0x00000268C0AAF000-memory.dmp

      Filesize

      1.3MB

    • memory/3652-30-0x000001AEBB3D0000-0x000001AEBB51F000-memory.dmp

      Filesize

      1.3MB