Resubmissions
25/08/2026, 15:56
260825-tdtb4s1zgz625/08/2026, 15:44
260825-s6y8dsbp81625/08/2026, 02:57
260825-dflgaawdqh6Analysis
- user interaction
yes - max time kernel
34s - max time network
41s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
- submitted
25/08/2026, 15:44
General
- Target Naisho no Natsuyasumi/nainatu-eng.exe
- Size 74.9MB
- Sample260825-s6y8dsbp81
- SHA256 a3ce5e934f855649352a49eb91ce9d75c21773252317c54b3de79f96ec855f4d
Score
6/10
Malware Config
Signatures
- Enumerates connected drives 3 TTPs 23 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
- 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.
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of SendNotifyMessage 1 IoCs
- Suspicious use of SetWindowsHookEx 3 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Naisho no Natsuyasumi\nainatu-eng.exe"C:\Users\Admin\AppData\Local\Temp\Naisho no Natsuyasumi\nainatu-eng.exe"1⤵
- Enumerates connected drives
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
~lv00000000.cur
memory/5072-0-0x0000000002230000-0x0000000002231000-memory.dmp
memory/5072-1-0x00000000001B2000-0x00000000001B3000-memory.dmp
memory/5072-2-0x0000000002230000-0x0000000002231000-memory.dmp
memory/5072-3-0x0000000000010000-0x00000000001E2000-memory.dmp
memory/5072-7-0x0000000000010000-0x00000000001E2000-memory.dmp
memory/5072-11-0x0000000000010000-0x00000000001E2000-memory.dmp
memory/5072-12-0x0000000000010000-0x00000000001E2000-memory.dmp