Analysis
- user interaction
yes - max time kernel
298s - max time network
297s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
27/07/2026, 16:22
General
- Target Process Lasso/Activator.exe
- Size 684KB
- Sample260727-tvmkwshr61
- SHA256 dda1582fcdf7355bb64d7029f6c8c92f7768d93fa5f8921af38d63a1bebf5e3f
Malware Config
Signatures
- Drops file in Drivers directory 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Modifies registry class 20 IoCs
- Opens file in notepad (likely ransom note) 1 IoCs
- Suspicious use of SetWindowsHookEx 2 IoCs
- Suspicious use of WriteProcessMemory 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Process Lasso\Activator.exe"C:\Users\Admin\AppData\Local\Temp\Process Lasso\Activator.exe"1⤵
- Drops file in Drivers directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of SetWindowsHookEx
-
C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵
-
C:\Windows\system32\OpenWith.exeC:\Windows\system32\OpenWith.exe -Embedding1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Documents\prolasso.key2⤵
- Modifies registry class
- Opens file in notepad (likely ransom note)
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
prolasso.key
memory/3204-10-0x0000000000400000-0x00000000005D3000-memory.dmp
memory/3204-32-0x0000000000400000-0x00000000005D3000-memory.dmp
memory/3204-6-0x00000000024C0000-0x00000000024C1000-memory.dmp
memory/3204-5-0x0000000000400000-0x00000000005D3000-memory.dmp
memory/3204-7-0x0000000000400000-0x00000000005D3000-memory.dmp
memory/3204-9-0x0000000000400000-0x00000000005D3000-memory.dmp
memory/3204-0-0x0000000000400000-0x00000000005D3000-memory.dmp
memory/3204-12-0x0000000000400000-0x00000000005D3000-memory.dmp
memory/3204-13-0x0000000000400000-0x00000000005D3000-memory.dmp
memory/3204-17-0x0000000000400000-0x00000000005D3000-memory.dmp
memory/3204-18-0x0000000000400000-0x00000000005D3000-memory.dmp
memory/3204-20-0x0000000000400000-0x00000000005D3000-memory.dmp
memory/3204-21-0x0000000000400000-0x00000000005D3000-memory.dmp
memory/3204-1-0x00000000024C0000-0x00000000024C1000-memory.dmp
memory/3204-4-0x0000000000400000-0x00000000005D3000-memory.dmp
memory/3204-23-0x0000000000400000-0x00000000005D3000-memory.dmp
memory/3204-35-0x0000000000400000-0x00000000005D3000-memory.dmp
memory/3204-27-0x0000000000400000-0x00000000005D3000-memory.dmp
memory/3204-29-0x0000000000400000-0x00000000005D3000-memory.dmp
memory/3204-30-0x0000000000400000-0x00000000005D3000-memory.dmp
memory/3204-24-0x0000000000400000-0x00000000005D3000-memory.dmp
memory/3204-33-0x0000000000400000-0x00000000005D3000-memory.dmp
memory/3204-26-0x0000000000400000-0x00000000005D3000-memory.dmp
memory/3204-36-0x0000000000400000-0x00000000005D3000-memory.dmp
memory/3204-38-0x0000000000400000-0x00000000005D3000-memory.dmp
memory/3204-39-0x0000000000400000-0x00000000005D3000-memory.dmp
memory/3204-40-0x0000000000400000-0x00000000005D3000-memory.dmp
memory/3204-41-0x0000000000400000-0x00000000005D3000-memory.dmp
memory/3204-42-0x0000000000400000-0x00000000005D3000-memory.dmp
memory/3204-44-0x0000000000400000-0x00000000005D3000-memory.dmp