Analysis
- max time kernel
46s - max time network
60s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
16/08/2026, 16:08
General
- Target utweb_installer.exe
- Size 2.1MB
- Sample260816-tlhwca11ht
- SHA256 c826cce67e4b34c51048595e32967bb275e3e3f5eb84cf4b826c277a7d550d6e
Malware Config
Signatures
- Executes dropped EXE 2 IoCs
- Loads dropped DLL 10 IoCs
- Checks for any installed AV software in registry 1 TTPs 9 IoCs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- 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. 2 IoCs
Inno Setup installer
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Modifies registry class 39 IoCs
- Script User-Agent 3 IoCs
Uses user-agent string associated with script host/environment.
- Suspicious behavior: EnumeratesProcesses 14 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of WriteProcessMemory 2 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\utweb_installer.exe"C:\Users\Admin\AppData\Local\Temp\utweb_installer.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-V93MKZH0XJ.tmp\utweb_installer.tmp"C:\Users\Admin\AppData\Local\Temp\is-V93MKZH0XJ.tmp\utweb_installer.tmp" /SL5="$50266,928425,882688,C:\Users\Admin\AppData\Local\Temp\utweb_installer.exe"2⤵
- Executes dropped EXE
- Checks for any installed AV software in registry
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-GP5P8LLA57.tmp\utweb_installer.exe"C:\Users\Admin\AppData\Local\Temp\is-GP5P8LLA57.tmp\utweb_installer.exe" /S3⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
-
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
106.png
107.png
108.png
component0.zip
saBSI.exe
utweb_installer.exe
utweb_installer.tmp
FindProcDLL.dll
INetC.dll
System.dll
UAC.dll
nsisFirewall.dll
utweb.exe
memory/1004-23-0x0000000003B20000-0x0000000003C60000-memory.dmp
memory/1004-31-0x0000000003B20000-0x0000000003C60000-memory.dmp
memory/1004-36-0x0000000003B20000-0x0000000003C60000-memory.dmp
memory/1004-37-0x0000000003B20000-0x0000000003C60000-memory.dmp
memory/1004-39-0x0000000000290000-0x00000000006D0000-memory.dmp
memory/1004-40-0x0000000003B20000-0x0000000003C60000-memory.dmp
memory/1004-30-0x0000000003B20000-0x0000000003C60000-memory.dmp
memory/1004-52-0x0000000003B20000-0x0000000003C60000-memory.dmp
memory/1004-56-0x0000000000290000-0x00000000006D0000-memory.dmp
memory/1004-32-0x0000000003B20000-0x0000000003C60000-memory.dmp
memory/1004-26-0x0000000000290000-0x00000000006D0000-memory.dmp
memory/1004-24-0x0000000003B20000-0x0000000003C60000-memory.dmp
memory/1004-170-0x0000000000290000-0x00000000006D0000-memory.dmp
memory/1004-16-0x0000000000290000-0x00000000006D0000-memory.dmp
memory/1004-17-0x0000000001230000-0x0000000001231000-memory.dmp
memory/1004-6-0x0000000001230000-0x0000000001231000-memory.dmp
memory/2820-15-0x0000000000180000-0x0000000000266000-memory.dmp
memory/2820-0-0x0000000000180000-0x0000000000266000-memory.dmp