Analysis
- user interaction
yes - max time kernel
51s - max time network
50s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
- submitted
30/07/2026, 10:57
General
- Target YT3VM.exe
- Size 529KB
- Sample260730-m2fmlaztfx
- SHA256 d58a6ea62bb526a955c53b7c1b2174002d7f1bc790402760e5c8b828db7aaa96
Malware Config
Signatures
- Modifies WinLogon for persistence 2 TTPs 1 IoCs
- UAC bypass 3 TTPs 1 IoCs
- Renames multiple (137) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
- Event Triggered Execution: Image File Execution Options Injection 1 TTPs 9 IoCs
- Modifies Windows Firewall 2 TTPs 2 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Creates a file in the Startup directory 1 TTPs 2 IoCs
A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.
- Executes dropped EXE 1 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Checks whether UAC is enabled 1 TTPs 2 IoCs
- Indicator Removal: Clear Persistence 1 TTPs 3 IoCs
remove IFEO.
- Drops file in Windows directory 3 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Event Triggered Execution: Netsh Helper DLL 1 TTPs 6 IoCs
Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.
- System Location Discovery: System Language Discovery 1 TTPs 8 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Runs net.exe
- Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 7 IoCs
- System policy modification 1 TTPs 1 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\YT3VM.exe"C:\Users\Admin\AppData\Local\Temp\YT3VM.exe"1⤵
- Modifies WinLogon for persistence
- UAC bypass
- Checks whether UAC is enabled
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
- System policy modification
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C:\Windows\files\bootup.exe"C:\Windows\files\bootup.exe"2⤵
- Event Triggered Execution: Image File Execution Options Injection
- Checks computer location settings
- Creates a file in the Startup directory
- Executes dropped EXE
- Adds Run key to start application
- Indicator Removal: Clear Persistence
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /tn "Microsoft\Windows\Update\551b876f-5a28-4a71-9857-909ff8323c06" /tr "C:\Windows\files\bootup.exe" /sc onlogon /ru System /f3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
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C:\Windows\SysWOW64\netsh.exe"C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="WindowsUpdate" dir=out action=allow protocol=TCP3⤵
- Modifies Windows Firewall
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
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C:\Windows\SysWOW64\net.exe"C:\Windows\System32\net.exe" stop sysmon /y3⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\net1.exeC:\Windows\system32\net1 stop sysmon /y4⤵
- System Location Discovery: System Language Discovery
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /tn "Microsoft\Windows\Update\a1f19236-78ab-4128-80ba-d185bb243105" /tr "C:\Windows\files\bootup.exe" /sc onlogon /ru System /f3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
-
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C:\Windows\SysWOW64\netsh.exe"C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="WindowsUpdate" dir=out action=allow protocol=TCP3⤵
- Modifies Windows Firewall
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
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Network
MITRE ATT&CK Enterprise v16
Persistence
Boot or Logon Autostart Execution
3Registry Run Keys / Startup Folder
2Winlogon Helper DLL
1Create or Modify System Process
1Windows Service
1Event Triggered Execution
2Image File Execution Options Injection
1Netsh Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
3Registry Run Keys / Startup Folder
2Winlogon Helper DLL
1Create or Modify System Process
1Windows Service
1Event Triggered Execution
2Image File Execution Options Injection
1Netsh Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Impair Defenses
2Disable or Modify System Firewall
1Disable or Modify Tools
1Indicator Removal
1Clear Persistence
1Modify Registry
4Replay Monitor
Loading Replay Monitor...
Downloads
bootup.exe
stage.txt
memory/3764-10-0x0000000006410000-0x0000000006420000-memory.dmp
memory/3764-150-0x0000000006410000-0x0000000006420000-memory.dmp
memory/3764-151-0x0000000006410000-0x0000000006420000-memory.dmp
memory/3764-152-0x0000000006410000-0x0000000006420000-memory.dmp
memory/5080-0-0x0000000000F70000-0x0000000000FFA000-memory.dmp
memory/5080-1-0x0000000005990000-0x0000000005A22000-memory.dmp
memory/5080-2-0x0000000005FE0000-0x0000000006584000-memory.dmp