Analysis
- max time kernel
149s - max time network
94s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
02/05/2026, 02:21
General
- Target left4dead2.exe
- Size 356KB
- Sample260502-ctafhact2j
- SHA256 7223483544111e6a8b3865dd83d73f5543760c9050ec6b25c332bd5d9731e6b9
Score
6/10
Malware Config
Signatures
- Drops desktop.ini file(s) 1 IoCs
- Network Service Discovery 1 TTPs 1 IoCs
Attempt to gather information on host's network.
- System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Modifies registry class 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\left4dead2.exe"C:\Users\Admin\AppData\Local\Temp\left4dead2.exe"1⤵
- System Location Discovery: System Language Discovery
-
C:\Windows\System32\GameBarPresenceWriter.exe"C:\Windows\System32\GameBarPresenceWriter.exe" -ServerName:Windows.Gaming.GameBar.Internal.PresenceWriterServer1⤵
- Network Service Discovery
-
C:\Windows\system32\OpenWith.exeC:\Windows\system32\OpenWith.exe -Embedding1⤵
- Suspicious use of SetWindowsHookEx
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k BcastDVRUserService -s BcastDVRUserService1⤵
- Drops desktop.ini file(s)
- Checks processor information in registry
- Modifies registry class
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
desktop.ini
memory/2468-16-0x0000022FB0960000-0x0000022FB0A0F000-memory.dmp
memory/2468-18-0x0000022FB0D00000-0x0000022FB0D12000-memory.dmp
memory/2468-17-0x0000022FB0960000-0x0000022FB0A0F000-memory.dmp
memory/3948-14-0x0000024DDC360000-0x0000024DDC40F000-memory.dmp
memory/4316-15-0x0000024563FC0000-0x000002456406F000-memory.dmp