Overview

overview

10

Static

static

10

XClient.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250314-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/04/2025, 10:33

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General

  • Target

    XClient.exe

  • Size

    52KB

  • MD5

    704cf322a2352b2909af319b8fb321e2

  • SHA1

    cede363819b46de6666af392e516818392fcbea1

  • SHA256

    8b3da7096981bfd3da39e2183a05fe7ceb20ec97a955c7844252c4e4432ffe7a

  • SHA512

    3ce9d3438fb7bf2a1e68cbf74bc654a384a9883a557e717cfd7565d91542bf5c7e8708c84b91c9aafc2ceec5bfca5f5ea2689581e22aa1c701bde9cd4029aa81

  • SSDEEP

    1536:89UEPX1t0fbiJGVisUkbxZwF1PS96AdOCE08R:aUWQi4VfUkbxq2OZ08R

Score
10/10
xwormexecutionpersistencerattrojan

Malware Config

Extracted

Family

xworm

Attributes
  • Install_directory

    %Public%

  • install_file

    USB.exe

  • pastebin_url

    https://pastebin.com/raw/kG1CGVaU

Signatures

  • Detect Xworm Payload 2 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

    trojanratxworm
  • Xworm family
    xworm
  • Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

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

    execution
  • 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
    persistence
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Modifies registry class 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

    persistenceexecution
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 11 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 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.

    persistence

Processes

  • C:\Users\Admin\AppData\Local\Temp\XClient.exe
    "C:\Users\Admin\AppData\Local\Temp\XClient.exe"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4988
    • 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:4824
    • 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:3616
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Public\RtkAudUService64'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3948
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'RtkAudUService64'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:400
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "RtkAudUService64" /tr "C:\Users\Public\RtkAudUService64"
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:4560
  • C:\Windows\system32\taskmgr.exe
    "C:\Windows\system32\taskmgr.exe" /7
    1⤵
    • Checks SCSI registry key(s)
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:5948
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\Users\Public\RtkAudUService64
    1⤵
      PID:3752
    • C:\Windows\System32\rundll32.exe
      C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
      1⤵
        PID:5976
      • C:\Users\Public\RtkAudUService64
        C:\Users\Public\RtkAudUService64
        1⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:728
      • C:\Users\Public\RtkAudUService64
        C:\Users\Public\RtkAudUService64
        1⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:5104

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\RtkAudUService64.log
        Filesize

        654B

        MD5

        2ff39f6c7249774be85fd60a8f9a245e

        SHA1

        684ff36b31aedc1e587c8496c02722c6698c1c4e

        SHA256

        e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

        SHA512

        1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

        Download Submit

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

        2KB

        MD5

        d85ba6ff808d9e5444a4b369f5bc2730

        SHA1

        31aa9d96590fff6981b315e0b391b575e4c0804a

        SHA256

        84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

        SHA512

        8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

        Download Submit

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

        944B

        MD5

        efa4168b73a5e8ae56d49bcac4d67861

        SHA1

        b3fe6b2d9fc05ad7892a2c8b96914764336b3067

        SHA256

        7aab157fba3a543647a38cc8729ffb962a58cc2093d94566c9e68ff73d134dca

        SHA512

        a1f305eac9c73c951f22e76f3904c1c6bb518b12d8a74bbea544c845f3d592e7915ec47d6531a3a4e669f6ab12311f3a632ff47a68f36370111d1c82cf8b6e99

        Download Submit

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

        944B

        MD5

        eb1ad317bd25b55b2bbdce8a28a74a94

        SHA1

        98a3978be4d10d62e7411946474579ee5bdc5ea6

        SHA256

        9e94e7c9ac6134ee30e79498558aa1a5a1ac79a643666c3f8922eed215dd3a98

        SHA512

        d011f266c0240d84470c0f9577cd9e4927309bd19bb38570ca9704ed8e1d159f9bea982a59d3eefef72ce7a10bd81208b82e88ef57c7af587f7437a89769adc0

        Download Submit

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

        944B

        MD5

        5cfe303e798d1cc6c1dab341e7265c15

        SHA1

        cd2834e05191a24e28a100f3f8114d5a7708dc7c

        SHA256

        c4d16552769ca1762f6867bce85589c645ac3dc490b650083d74f853f898cfab

        SHA512

        ef151bbe0033a2caf2d40aff74855a3f42c8171e05a11c8ce93c7039d9430482c43fe93d9164ee94839aff253cad774dbf619dde9a8af38773ca66d59ac3400e

        Download Submit

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_a3ylqmwi.joo.ps1
        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

        Download Submit

      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\RtkAudUService64.lnk
        Filesize

        1011B

        MD5

        3168c303ebd5ae4b0104611f9e0bbf32

        SHA1

        83cd72fee4e3d592eb4a1cec55ecb3f074c56377

        SHA256

        d6437de4e5a0fe2d90deeaacca744ae65125162764222213a87989ce0c90cb12

        SHA512

        ef853ec56608cc0ac4b9cb91836e0c0b98be2f391d7c24c7da1662c7e3a65b93c200731cb391c26e5018522e324be594d2ab398b058ea1fc500ccee1a48562bd

        Download Submit

      • C:\Users\Public\RtkAudUService64
        Filesize

        52KB

        MD5

        704cf322a2352b2909af319b8fb321e2

        SHA1

        cede363819b46de6666af392e516818392fcbea1

        SHA256

        8b3da7096981bfd3da39e2183a05fe7ceb20ec97a955c7844252c4e4432ffe7a

        SHA512

        3ce9d3438fb7bf2a1e68cbf74bc654a384a9883a557e717cfd7565d91542bf5c7e8708c84b91c9aafc2ceec5bfca5f5ea2689581e22aa1c701bde9cd4029aa81

        Download Submit

      • memory/4824-9-0x0000025F36E50000-0x0000025F36E72000-memory.dmp

        Filesize

        136KB

        Download

      • memory/4824-16-0x00007FFD37180000-0x00007FFD37C41000-memory.dmp

        Filesize

        10.8MB

        Download

      • memory/4824-3-0x00007FFD37180000-0x00007FFD37C41000-memory.dmp

        Filesize

        10.8MB

        Download

      • memory/4824-2-0x00007FFD37180000-0x00007FFD37C41000-memory.dmp

        Filesize

        10.8MB

        Download

      • memory/4988-70-0x00007FFD37180000-0x00007FFD37C41000-memory.dmp

        Filesize

        10.8MB

        Download

      • memory/4988-0-0x00007FFD37183000-0x00007FFD37185000-memory.dmp

        Filesize

        8KB

        Download

      • memory/4988-1-0x0000000000FF0000-0x0000000001004000-memory.dmp

        Filesize

        80KB

        Download

      • memory/4988-67-0x00007FFD37180000-0x00007FFD37C41000-memory.dmp

        Filesize

        10.8MB

        Download

      • memory/5948-41-0x000001DBA5A70000-0x000001DBA5A71000-memory.dmp

        Filesize

        4KB

        Download

      • memory/5948-48-0x000001DBA5A70000-0x000001DBA5A71000-memory.dmp

        Filesize

        4KB

        Download

      • memory/5948-47-0x000001DBA5A70000-0x000001DBA5A71000-memory.dmp

        Filesize

        4KB

        Download

      • memory/5948-46-0x000001DBA5A70000-0x000001DBA5A71000-memory.dmp

        Filesize

        4KB

        Download

      • memory/5948-49-0x000001DBA5A70000-0x000001DBA5A71000-memory.dmp

        Filesize

        4KB

        Download

      • memory/5948-50-0x000001DBA5A70000-0x000001DBA5A71000-memory.dmp

        Filesize

        4KB

        Download

      • memory/5948-51-0x000001DBA5A70000-0x000001DBA5A71000-memory.dmp

        Filesize

        4KB

        Download

      • memory/5948-52-0x000001DBA5A70000-0x000001DBA5A71000-memory.dmp

        Filesize

        4KB

        Download

      • memory/5948-40-0x000001DBA5A70000-0x000001DBA5A71000-memory.dmp

        Filesize

        4KB

        Download

      • memory/5948-42-0x000001DBA5A70000-0x000001DBA5A71000-memory.dmp

        Filesize

        4KB

        Download