Analysis
- user interaction
yes - max time kernel
40s - max time network
44s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
04/08/2026, 01:11
General
- Target VST.exe
- Size 32.7MB
- Sample260804-bj98psek5x
- SHA256 4d3860b852d9cffe9ab4d6340cd09ab578b2e6eac04954d554d49c85e3f42b2c
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Drops file in Program Files directory 6 IoCs
- Drops file in Windows directory 3 IoCs
- 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.
- Inno Setup is an open-source installation builder for Windows applications. 3 IoCs
Inno Setup installer
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of WriteProcessMemory 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\VST.exe"C:\Users\Admin\AppData\Local\Temp\VST.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-PJDUU.tmp\VST.tmp"C:\Users\Admin\AppData\Local\Temp\is-PJDUU.tmp\VST.tmp" /SL5="$4010A,33855720,140800,C:\Users\Admin\AppData\Local\Temp\VST.exe"2⤵
- Executes dropped EXE
- Drops file in Program Files directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
VST.tmp
memory/1136-8-0x0000000000400000-0x0000000000579000-memory.dmp
memory/1136-9-0x0000000000400000-0x0000000000579000-memory.dmp
memory/1136-14-0x0000000000400000-0x0000000000579000-memory.dmp
memory/1136-17-0x0000000000400000-0x0000000000579000-memory.dmp
memory/1136-25-0x0000000000400000-0x0000000000579000-memory.dmp
memory/1136-31-0x0000000000400000-0x0000000000579000-memory.dmp
memory/3152-0-0x0000000000400000-0x000000000042D000-memory.dmp
memory/3152-2-0x000000000041E000-0x000000000041F000-memory.dmp
memory/3152-15-0x0000000000400000-0x000000000042D000-memory.dmp
memory/3152-32-0x0000000000400000-0x000000000042D000-memory.dmp