Analysis
- user interaction
yes - max time kernel
156s - max time network
156s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
09/08/2026, 22:53
General
- Target tlock_20.exe
- Size 444KB
- Sample260809-2t6alsep9x
- SHA256 fc75c81b3e4373a0853ad87dea685e3af44707aa0c556d63775c2453228911a8
Malware Config
Signatures
- UPX packed file 2 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Opens file in notepad (likely ransom note) 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 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\tlock_20.exe"C:\Users\Admin\AppData\Local\Temp\tlock_20.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\schtasks.exe"schtasks" /create /tn UserSessionSync /tr "\"C:\Users\Admin\AppData\Local\Temp\tlock_20.exe\" --autolock" /sc onlogon /f /rl highest2⤵
- Scheduled Task/Job: Scheduled Task
-
-
C:\Users\Admin\AppData\Local\Temp\tlock_20.exe"C:\Users\Admin\AppData\Local\Temp\tlock_20.exe"1⤵
-
C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵
-
C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\tl_trace.txt1⤵
- Opens file in notepad (likely ransom note)
-
C:\Windows\system32\werfault.exewerfault.exe /h /shared Global\44fdcdf661954d8dbaf7c2cf9e043cef /t 2632 /p 58001⤵
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
tl_trace.txt
tl_trace.txt
memory/4784-5-0x00007FF6146A0000-0x00007FF614786000-memory.dmp
memory/5800-0-0x00007FF6146A0000-0x00007FF614786000-memory.dmp
memory/5800-6-0x00007FF6146A0000-0x00007FF614786000-memory.dmp
memory/5800-7-0x00007FF6146A0000-0x00007FF614786000-memory.dmp
memory/5800-8-0x00007FF6146A0000-0x00007FF614786000-memory.dmp
memory/5800-9-0x00007FF6146A0000-0x00007FF614786000-memory.dmp
memory/5800-12-0x00007FF6146A0000-0x00007FF614786000-memory.dmp
memory/5800-48-0x00007FF6146A0000-0x00007FF614786000-memory.dmp
memory/5800-58-0x00007FF6146A0000-0x00007FF614786000-memory.dmp