Analysis
- max time kernel
150s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
15/08/2026, 00:23
General
- Target FSViewer.exe
- Size 8.0MB
- Sample260815-aprg4swtbx
- SHA256 0f5177f25e85418a2b9c9be2d0566c717de589e2d436cafa25686c58e9d0619c
Malware Config
Signatures
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Modifies registry class 8 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious use of SetWindowsHookEx 4 IoCs
- Suspicious use of WriteProcessMemory 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\FSViewer.exe"C:\Users\Admin\AppData\Local\Temp\FSViewer.exe"1⤵
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\fsplugin08.dll"C:\Users\Admin\AppData\Local\Temp\fsplugin08.dll" 1768922 1 "C:\Program Files\EditUnpublish.mov"2⤵
- System Location Discovery: System Language Discovery
- Modifies registry class
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
memory/1536-8-0x00000000050C0000-0x00000000050D0000-memory.dmp
memory/1536-10-0x0000000000270000-0x0000000000391000-memory.dmp
memory/1536-9-0x0000000000270000-0x0000000000391000-memory.dmp
memory/1536-7-0x000000000036F000-0x0000000000370000-memory.dmp
memory/1948-14-0x0000000000820000-0x0000000001044000-memory.dmp
memory/1948-22-0x0000000000820000-0x0000000001044000-memory.dmp
memory/1948-1-0x0000000000820000-0x0000000001044000-memory.dmp
memory/1948-11-0x0000000000820000-0x0000000001044000-memory.dmp
memory/1948-13-0x000000006AD80000-0x000000006ADFE000-memory.dmp
memory/1948-12-0x0000000000820000-0x0000000001044000-memory.dmp
memory/1948-0-0x0000000000ECC000-0x0000000000ECD000-memory.dmp
memory/1948-16-0x0000000000820000-0x0000000001044000-memory.dmp
memory/1948-18-0x0000000000820000-0x0000000001044000-memory.dmp
memory/1948-5-0x0000000007F30000-0x0000000007F4E000-memory.dmp
memory/1948-26-0x0000000000820000-0x0000000001044000-memory.dmp
memory/1948-28-0x0000000000820000-0x0000000001044000-memory.dmp
memory/1948-30-0x0000000000820000-0x0000000001044000-memory.dmp
memory/1948-32-0x0000000000820000-0x0000000001044000-memory.dmp
memory/1948-34-0x0000000000820000-0x0000000001044000-memory.dmp
memory/1948-36-0x0000000000820000-0x0000000001044000-memory.dmp
memory/1948-40-0x0000000000820000-0x0000000001044000-memory.dmp