Analysis
- max time kernel
149s - max time network
151s - platform
windows11-21h2_x64 - resource
win11-20260911-en - resource tags
- submitted
17/10/2026, 04:29
General
- Target vvininit.exe
- Size 31.0MB
- Sample261017-e4g97swzbx
- SHA256 5d6760d29fc5e1e1661d58b4d9db2c36ff7a2970761ee6080e896da145659d58
Malware Config
Signatures
- Family: SentinelRAT
SentinelRAT is a Windows remote access tool written in C#.
- Detects SentinelRAT payload 1 IoCs
- Modifies firewall policy service 3 TTPs 1 IoCs
- UAC bypass 3 TTPs 1 IoCs
- Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
- Disables RegEdit via registry modification 1 IoCs
- Checks whether UAC is enabled 1 TTPs 2 IoCs
- Contacts third-party web service commonly abused for C2 1 TTPs 2 IoCs
Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.
- Looks up external IP address via web service 1 TTPs 1 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 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Reads the TCP/IP host and domain name from the registry 1 TTPs 4 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
- 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.
- Suspicious behavior: EnumeratesProcesses 13 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 4 IoCs
- System policy modification 1 TTPs 1 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:\Users\Admin\AppData\Local\Temp\vvininit.exe"C:\Users\Admin\AppData\Local\Temp\vvininit.exe"1⤵
- Modifies firewall policy service
- UAC bypass
- Disables RegEdit via registry modification
- Checks whether UAC is enabled
- Reads the TCP/IP host and domain name from the registry
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath $env:SystemDrive/2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SYSTEM32\schtasks.exe"schtasks.exe" /delete /tn "MSEdgeUpdaterTask-2958FSA1" /f2⤵
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C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /tn "MSEdgeUpdaterTask-2958FSA1" /tr "'C:\Users\Admin\AppData\Local\Temp\vvininit.exe'" /sc minute /mo 5 /rl highest /f2⤵
- Scheduled Task/Job: Scheduled Task
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C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\MSEdgeUpdate.vbs"2⤵
- Executes a VBScript file via the Windows Script Host.
- Reads the TCP/IP host and domain name from the registry
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C:\Users\Admin\AppData\Local\Temp\vvininit.exe"C:\Users\Admin\AppData\Local\Temp\vvininit.exe"1⤵
Network
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
2PowerShell
1Visual Basic
1Scheduled Task/Job
1Scheduled Task
1Persistence
Create or Modify System Process
1Windows Service
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Create or Modify System Process
1Windows Service
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
1Modify Registry
3Replay Monitor
Loading Replay Monitor...
Downloads
MSEdgeUpdate.vbs
__PSScriptPolicyTest_b42g34uc.zdc.ps1
memory/3496-24-0x0000020771A40000-0x0000020771A4A000-memory.dmp
memory/3496-33-0x0000020771A60000-0x0000020771A68000-memory.dmp
memory/3496-3-0x0000020771A90000-0x0000020771AA0000-memory.dmp
memory/3496-9-0x0000020771530000-0x0000020771552000-memory.dmp
memory/3496-13-0x0000020771A90000-0x0000020771AA0000-memory.dmp
memory/3496-21-0x00007FF4C3FC0000-0x00007FF4C3FD0000-memory.dmp
memory/3496-22-0x0000020771A20000-0x0000020771A3C000-memory.dmp
memory/3496-23-0x00000207728B0000-0x0000020772963000-memory.dmp
memory/3496-36-0x0000020771A90000-0x0000020771AA0000-memory.dmp
memory/3496-35-0x0000020772630000-0x000002077263A000-memory.dmp
memory/3496-27-0x0000020771A70000-0x0000020771A8C000-memory.dmp
memory/3496-31-0x0000020771A50000-0x0000020771A5A000-memory.dmp
memory/3496-32-0x0000020772640000-0x000002077265A000-memory.dmp
memory/3496-2-0x0000020771A90000-0x0000020771AA0000-memory.dmp
memory/3496-34-0x0000020772620000-0x0000020772626000-memory.dmp
memory/5536-1-0x0000024CCBE60000-0x0000024CCBE70000-memory.dmp
memory/5536-0-0x0000024CB1860000-0x0000024CB187A000-memory.dmp
memory/5536-40-0x0000024CCBE60000-0x0000024CCBE70000-memory.dmp