Analysis
- max time kernel
149s - max time network
149s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
17/02/2026, 17:26
General
- Target VioletClient.exe
- Size 1.0MB
- Sample260217-v1ac7afw2d
- SHA256 5a923bba32dad3e89460759bae091bdfffcad12e01a114e2b9d0fd57f91a2e2c
Score
10/10
Malware Config
Signatures
- Detects VioletWorm 1 IoCs
- VioletWorm
VioletWorm is a Windows worm written in C#.
- Violetworm family
- Drops startup file 2 IoCs
- Executes dropped EXE 3 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious use of AdjustPrivilegeToken 4 IoCs
- Suspicious use of WriteProcessMemory 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\VioletClient.exe"C:\Users\Admin\AppData\Local\Temp\VioletClient.exe"1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /f /sc minute /mo 1 /tn "VioletClient" /tr "C:\Users\Admin\AppData\Roaming\VioletClient.exe"2⤵
- Scheduled Task/Job: Scheduled Task
-
-
C:\Users\Admin\AppData\Roaming\VioletClient.exeC:\Users\Admin\AppData\Roaming\VioletClient.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
-
C:\Users\Admin\AppData\Roaming\VioletClient.exeC:\Users\Admin\AppData\Roaming\VioletClient.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
-
C:\Users\Admin\AppData\Roaming\VioletClient.exeC:\Users\Admin\AppData\Roaming\VioletClient.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v16
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
VioletClient.exe.log
VioletClient.exe
memory/4648-0-0x0000000000B40000-0x0000000000C4A000-memory.dmp
memory/4648-4-0x000000001B890000-0x000000001B8A0000-memory.dmp
memory/4648-9-0x000000001B800000-0x000000001B80C000-memory.dmp
memory/4648-8-0x000000001BA00000-0x000000001BAD6000-memory.dmp
memory/4648-10-0x000000001B890000-0x000000001B8A0000-memory.dmp