Analysis

  • max time kernel
    178s
  • max time network
    184s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260710-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    06/08/2026, 15:15

General

  • Target
    99ebda03950dec5b23b978df6d6d6cf254bd6781ed5d23b8ad8dfe3c230a9515.vbs
  • Size 1.3MB
  • Sample260806-snar3sysbz
  • SHA256 99ebda03950dec5b23b978df6d6d6cf254bd6781ed5d23b8ad8dfe3c230a9515
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • vjw0rm

C2
  • http://nuevoooooo.duckdns.org:1111

Signatures

  • Family: Vjw0rm

    Vjw0rm is a remote access trojan written in JavaScript.

  • Badlisted process makes network request 2 IoCs

    Network request originating from process or tool commonly abused by malware.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell and hide display window.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 1 TTPs 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Executes a VBScript file via the Windows Script Host. 1 TTPs 2 IoCs
  • 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 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 9 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:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\99ebda03950dec5b23b978df6d6d6cf254bd6781ed5d23b8ad8dfe3c230a9515.vbs"
    1⤵
    • Adds Run key to start application
    • Executes a VBScript file via the Windows Script Host.
    • Suspicious use of WriteProcessMemory
    PID:2840
    • C:\Windows\System32\taskkill.exe
      "C:\Windows\System32\taskkill.exe" /IM cmstp.exe /F
      2⤵
      • Kills process with taskkill
      • Suspicious use of AdjustPrivilegeToken
      PID:2096
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" "C:\Users\Admin\AppData\Local\Temp\ny98825.vbs"
      2⤵
      • Executes a VBScript file via the Windows Script Host.
      • Suspicious use of WriteProcessMemory
      PID:1484
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass -WindowStyle Hidden -NoProfile -File "C:\Users\Admin\AppData\Local\Temp\h0r48173.ps1"
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1424
        • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
          "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\prfxjmks\prfxjmks.cmdline"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:5236
          • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
            C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES1E0D.tmp" "c:\Users\Admin\AppData\Local\Temp\prfxjmks\CSC3834AA3DC73D4677951E186D62692FA7.TMP"
            5⤵
              PID:1164
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell.exe" -WindowStyle Hidden -ExecutionPolicy Bypass -File "C:\Users\Admin\AppData\Local\Temp\agent_1783533926.ps1"
            4⤵
            • Badlisted process makes network request
            • Command and Scripting Interpreter: PowerShell
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:4916
            • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
              "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\2v2y4njs\2v2y4njs.cmdline"
              5⤵
              • Suspicious use of WriteProcessMemory
              PID:5900
              • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
                C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES2793.tmp" "c:\Users\Admin\AppData\Local\Temp\2v2y4njs\CSC28726958D85A4D5099C21DE94A54E38.TMP"
                6⤵
                  PID:6028
        • C:\Windows\System32\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /create /sc onlogon /tn "WindowsUpdate" /tr "wscript.exe //B C:\Users\Admin\AppData\Roaming\Microsoft\Cache\TaskHostW.vbs" /f /rl HIGHEST
          2⤵
          • Scheduled Task/Job: Scheduled Task
          PID:4940
      • C:\Windows\system32\wscript.exe
        wscript.exe
        1⤵
          PID:2588

        Network

              MITRE ATT&CK Enterprise v16

              Replay Monitor

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              Downloads

              2v2y4njs.dll

              • Path C:\Users\Admin\AppData\Local\Temp\2v2y4njs\2v2y4njs.dll
              • Size 3KB
              • SHA256 588cbf06f1a5d60cf7746af8f6367de3f26027a3feda8101dd6ed5de2340ef24
              • MD5 SHA1 SHA512 TLSH

              RES1E0D.tmp

              • Path C:\Users\Admin\AppData\Local\Temp\RES1E0D.tmp
              • Size 1KB
              • SHA256 e0ec3364de2b7603bf9a1d421701645ed6038c875d2cd7a0875d61074db97ab0
              • MD5 SHA1 SHA512 TLSH

              RES2793.tmp

              • Path C:\Users\Admin\AppData\Local\Temp\RES2793.tmp
              • Size 1KB
              • SHA256 41240f5d438985499458a352dabd8ef592e0492eaca3f60cba43a2d2b4fab6bc
              • MD5 SHA1 SHA512 TLSH

              __PSScriptPolicyTest_gci3psui.n42.ps1

              • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_gci3psui.n42.ps1
              • Size 60B
              • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
              • MD5 SHA1 SHA512 TLSH

              agent_1783533926.ps1

              • Path C:\Users\Admin\AppData\Local\Temp\agent_1783533926.ps1
              • Size 38KB
              • SHA256 d398bc52d93382d73f8033492e32bb4825ccdbc83a0de9621d606e50621ee51e
              • MD5 SHA1 SHA512 SSDEEP TLSH

              h0r48173.ps1

              • Path C:\Users\Admin\AppData\Local\Temp\h0r48173.ps1
              • Size 61KB
              • SHA256 4b595ca6db7d8460a286ec997e23909b747f2806e9c5788b8b9e3df52203de92
              • MD5 SHA1 SHA512 SSDEEP TLSH

              ny98825.vbs

              • Path C:\Users\Admin\AppData\Local\Temp\ny98825.vbs
              • Size 199B
              • SHA256 07de7b076607a677f8966f7652390612edeb705022c59509556fe799151fa08d
              • MD5 SHA1 SHA512 TLSH

              prfxjmks.dll

              • Path C:\Users\Admin\AppData\Local\Temp\prfxjmks\prfxjmks.dll
              • Size 3KB
              • SHA256 c94aefd52a8f0c6df6fb571a24a65ce5296e9448b91a379b2cb8f4b6a0e68ded
              • MD5 SHA1 SHA512 TLSH

              2v2y4njs.0.cs

              • Path \??\c:\Users\Admin\AppData\Local\Temp\2v2y4njs\2v2y4njs.0.cs
              • Size 521B
              • SHA256 2a9921801b42f12e9f8a8c78c5a2319f5da6d74f4986a208ec7c705022366078
              • MD5 SHA1 SHA512 TLSH

              2v2y4njs.cmdline

              • Path \??\c:\Users\Admin\AppData\Local\Temp\2v2y4njs\2v2y4njs.cmdline
              • Size 369B
              • SHA256 090a4fedd39753ed3f9b2541150d5081499bf93ac353836a72726e311ab95d08
              • MD5 SHA1 SHA512 TLSH

              CSC28726958D85A4D5099C21DE94A54E38.TMP

              • Path \??\c:\Users\Admin\AppData\Local\Temp\2v2y4njs\CSC28726958D85A4D5099C21DE94A54E38.TMP
              • Size 652B
              • SHA256 f127163692196c375a909188b2be0033c28911fa1521a42bfa19a022fb5b38b6
              • MD5 SHA1 SHA512 TLSH

              CSC3834AA3DC73D4677951E186D62692FA7.TMP

              • Path \??\c:\Users\Admin\AppData\Local\Temp\prfxjmks\CSC3834AA3DC73D4677951E186D62692FA7.TMP
              • Size 652B
              • SHA256 92ccbb96bba528387aa0864b4bcd59d9ec9607e314630d53b540a8591a707182
              • MD5 SHA1 SHA512 TLSH

              prfxjmks.0.cs

              • Path \??\c:\Users\Admin\AppData\Local\Temp\prfxjmks\prfxjmks.0.cs
              • Size 282B
              • SHA256 4fb9af2ac2e8010be000d8d63a22019723133cae467119e4c4820ecc9bd29c39
              • MD5 SHA1 SHA512 TLSH

              prfxjmks.cmdline

              • Path \??\c:\Users\Admin\AppData\Local\Temp\prfxjmks\prfxjmks.cmdline
              • Size 369B
              • SHA256 80d23b19ae2707d11b7cdf83f3ac296eb23dce5e6e962567136e21ae193f51ef
              • MD5 SHA1 SHA512 TLSH

              memory/1424-19-0x0000026980700000-0x0000026980708000-memory.dmp

              memory/1424-3-0x00000269E7EC0000-0x00000269E7EE2000-memory.dmp

              memory/4916-36-0x000001871A040000-0x000001871A048000-memory.dmp

              memory/4916-39-0x000001871A0A0000-0x000001871A0BE000-memory.dmp

              memory/4916-40-0x000001871A0C0000-0x000001871A172000-memory.dmp

              memory/4916-41-0x000001877FFA0000-0x000001877FFAA000-memory.dmp

              memory/4916-42-0x0000018780000000-0x000001878002A000-memory.dmp

              memory/4916-43-0x0000018780000000-0x0000018780024000-memory.dmp