Analysis
- max time kernel
179s - max time network
178s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
- submitted
06/08/2026, 15:15
General
- Target 99ebda03950dec5b23b978df6d6d6cf254bd6781ed5d23b8ad8dfe3c230a9515.vbs
- Size 1.3MB
- Sample260806-snar3sysbz
- SHA256 99ebda03950dec5b23b978df6d6d6cf254bd6781ed5d23b8ad8dfe3c230a9515
Malware Config
Extracted
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vjw0rm
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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.
- Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
- 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.
- Script User-Agent 1 IoCs
Uses user-agent string associated with script host/environment.
- 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
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C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\99ebda03950dec5b23b978df6d6d6cf254bd6781ed5d23b8ad8dfe3c230a9515.vbs"1⤵
- Checks computer location settings
- Adds Run key to start application
- Executes a VBScript file via the Windows Script Host.
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\taskkill.exe"C:\Windows\System32\taskkill.exe" /IM cmstp.exe /F2⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\System32\wscript.exe"C:\Windows\System32\wscript.exe" "C:\Users\Admin\AppData\Local\Temp\ny98825.vbs"2⤵
- Checks computer location settings
- Executes a VBScript file via the Windows Script Host.
- Suspicious use of WriteProcessMemory
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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
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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\l0hdpuma\l0hdpuma.cmdline"4⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exeC:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES9BFD.tmp" "c:\Users\Admin\AppData\Local\Temp\l0hdpuma\CSCFA99A7E08E904B6894104A6498415EA2.TMP"5⤵
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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
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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\hkbbkfcr\hkbbkfcr.cmdline"5⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exeC:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESA795.tmp" "c:\Users\Admin\AppData\Local\Temp\hkbbkfcr\CSC24B2E816F9843ADAC5A6985AEF47650.TMP"6⤵
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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 HIGHEST2⤵
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\wscript.exewscript.exe1⤵
Network
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
2PowerShell
1Visual Basic
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
RES9BFD.tmp
RESA795.tmp
__PSScriptPolicyTest_hx5drkk4.e4k.ps1
agent_1783533926.ps1
h0r48173.ps1
hkbbkfcr.dll
l0hdpuma.dll
ny98825.vbs
CSC24B2E816F9843ADAC5A6985AEF47650.TMP
hkbbkfcr.0.cs
hkbbkfcr.cmdline
CSCFA99A7E08E904B6894104A6498415EA2.TMP
l0hdpuma.0.cs
l0hdpuma.cmdline
memory/3848-24-0x0000011CF8190000-0x0000011CF8198000-memory.dmp
memory/3848-10-0x0000011CF8120000-0x0000011CF8142000-memory.dmp
memory/4172-46-0x000002051E800000-0x000002051E808000-memory.dmp
memory/4172-47-0x000002051E840000-0x000002051E86A000-memory.dmp
memory/4172-48-0x000002051E840000-0x000002051E864000-memory.dmp