Analysis
- max time kernel
179s - max time network
182s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
- submitted
09/08/2026, 23:17
General
- Target 79cb1626f171e3a05ed5cb25b39c6d7945a617f8a11bc0ae864bcf1baf26c4b2.vbs
- Size 1.6MB
- Sample260809-2911tsxcld
- SHA256 79cb1626f171e3a05ed5cb25b39c6d7945a617f8a11bc0ae864bcf1baf26c4b2
Malware Config
Signatures
- Badlisted process makes network request 10 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.
- 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\79cb1626f171e3a05ed5cb25b39c6d7945a617f8a11bc0ae864bcf1baf26c4b2.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\tfg10662.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\ex16156.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\krekv5ff\krekv5ff.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\RES6424.tmp" "c:\Users\Admin\AppData\Local\Temp\krekv5ff\CSC66351BAA3B4C4882892E98ECC2701C98.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_1784154235.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\05miyah3\05miyah3.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\RES6C90.tmp" "c:\Users\Admin\AppData\Local\Temp\05miyah3\CSC231DA6E125441D59089ED3E70F7588E.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\Windows\Cache\DllHost.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
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Downloads
05miyah3.dll
RES6424.tmp
RES6C90.tmp
__PSScriptPolicyTest_e2rnkvjq.uhz.ps1
agent_1784154235.ps1
ex16156.ps1
krekv5ff.dll
tfg10662.vbs
05miyah3.0.cs
05miyah3.cmdline
CSC231DA6E125441D59089ED3E70F7588E.TMP
CSC66351BAA3B4C4882892E98ECC2701C98.TMP
krekv5ff.0.cs
krekv5ff.cmdline
memory/1720-24-0x0000018F7B0B0000-0x0000018F7B0B8000-memory.dmp
memory/1720-10-0x0000018F7B0C0000-0x0000018F7B0E2000-memory.dmp
memory/3832-46-0x000001300BDE0000-0x000001300BDE8000-memory.dmp
memory/3832-52-0x0000013026F40000-0x0000013026F6A000-memory.dmp
memory/3832-53-0x0000013026F40000-0x0000013026F64000-memory.dmp