Analysis
- user interaction
yes - max time kernel
13s - max time network
21s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
23/04/2026, 11:14
General
- Target st-setup-1.8.30.exe
- Size 10.6MB
- Sample260423-nb82wsa121
- SHA256 41ec92bc311daf40b22b2497d044b12d9ba0266da84d8581255d7cc9e059135f
Score
7/10
Malware Config
Signatures
- Modifies file permissions 1 TTPs 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 15 IoCs
- Loads dropped DLL 5 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious use of WriteProcessMemory 3 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\st-setup-1.8.30.exe"C:\Users\Admin\AppData\Local\Temp\st-setup-1.8.30.exe"1⤵
- Drops file in Program Files directory
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\icacls.exeicacls "C:\Program Files\SteamTools" /grant:r "*S-1-5-32-545:(OI)(CI)F" /T2⤵
- Modifies file permissions
-
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C:\Windows\SYSTEM32\icacls.exeicacls "C:\Program Files\SteamTools\*.*" /grant:r "*S-1-5-32-545:(OI)(CI)F"2⤵
- Modifies file permissions
-
-
C:\Windows\explorer.exe"C:\Windows\explorer.exe" "C:\Program Files\SteamTools\SteamTools.exe"2⤵
-
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C:\Windows\explorer.exeC:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding1⤵
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C:\Program Files\SteamTools\SteamTools.exe"C:\Program Files\SteamTools\SteamTools.exe"2⤵
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
Core.dll
Qt5Core.dll
Qt5Gui.dll
Qt5Network.dll
Qt5Svg.dll
Qt5Widgets.dll
SteamTools.exe
qico.dll
msvcp140.dll
msvcp140_1.dll
qwindows.dll
vcruntime140.dll
vcruntime140_1.dll
System.dll
modern-wizard.bmp
nsDialogs.dll
nsExec.dll
memory/3908-78-0x00007FF8B42C0000-0x00007FF8B4801000-memory.dmp
memory/4836-18-0x00007FF8C9AD0000-0x00007FF8C9AD7000-memory.dmp
memory/4836-52-0x00000000008B0000-0x0000000000C28000-memory.dmp
memory/4836-17-0x00007FF8C9AD5000-0x00007FF8C9AD6000-memory.dmp
memory/4836-65-0x00000000008B0000-0x0000000000C28000-memory.dmp