Analysis
- max time kernel
148s - max time network
154s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
21/08/2026, 06:14
General
- Target gtw27ru.exe
- Size 2.5MB
- Sample260821-gzfa6aaa73
- SHA256 70b975d4bc4c3f7d36b5ebdd41d6de39afb9d069ac320bcf96bcbe3732bc4082
Malware Config
Signatures
- Executes dropped EXE 2 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 8 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 3 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
- Modifies registry class 14 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of SetWindowsHookEx 2 IoCs
- Suspicious use of WriteProcessMemory 2 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\gtw27ru.exe"C:\Users\Admin\AppData\Local\Temp\gtw27ru.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-DGPVC.tmp\gtw27ru.tmp"C:\Users\Admin\AppData\Local\Temp\is-DGPVC.tmp\gtw27ru.tmp" /SL5="$A0078,2259069,141824,C:\Users\Admin\AppData\Local\Temp\gtw27ru.exe"2⤵
- Executes dropped EXE
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
-
C:\Program Files (x86)\S5 Development\Generating The Web\gtw.exe"C:\Program Files (x86)\S5 Development\Generating The Web\gtw.exe"3⤵
- Executes dropped EXE
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of SetWindowsHookEx
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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
DefaultText.txt
gtw.exe
gtw27ru.tmp
memory/3412-2-0x000000000041E000-0x000000000041F000-memory.dmp
memory/3412-0-0x0000000000400000-0x000000000042F000-memory.dmp
memory/3412-14-0x0000000000400000-0x000000000042F000-memory.dmp
memory/3412-43-0x0000000000400000-0x000000000042F000-memory.dmp
memory/5856-8-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5856-36-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5856-17-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5856-42-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5856-15-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5856-13-0x0000000000400000-0x0000000000537000-memory.dmp