Analysis
- max time kernel
148s - max time network
152s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
24/07/2026, 18:24
General
- Target Env_DX8/GuardShield.dll
- Size 4.5MB
- Sample260724-w2dmnsab49
- SHA256 4ff4b76dfa55141ff5cffde7133a732ea8a31151e70dc1910427585e02dda065
Malware Config
Signatures
- Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
- Checks whether UAC is enabled 1 TTPs 1 IoCs
- 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.
- Suspicious use of WriteProcessMemory 1 IoCs
Processes
-
C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\Env_DX8\GuardShield.dll,#11⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\Env_DX8\GuardShield.dll,#12⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Checks whether UAC is enabled
- System Location Discovery: System Language Discovery
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
memory/3540-0-0x0000000073FE0000-0x0000000074B99000-memory.dmp
memory/3540-2-0x0000000073FE0000-0x0000000074B99000-memory.dmp
memory/3540-1-0x0000000073FE0000-0x0000000074B99000-memory.dmp
memory/3540-10-0x0000000036E30000-0x0000000036E40000-memory.dmp
memory/3540-4-0x0000000073FE0000-0x0000000074B99000-memory.dmp
memory/3540-6-0x0000000073FE0000-0x0000000074B99000-memory.dmp
memory/3540-7-0x0000000073FE0000-0x0000000074B99000-memory.dmp
memory/3540-12-0x0000000073FE0000-0x0000000074B99000-memory.dmp
memory/3540-8-0x0000000073FE0000-0x0000000074B99000-memory.dmp
memory/3540-3-0x0000000073FE0000-0x0000000074B99000-memory.dmp
memory/3540-9-0x0000000036E30000-0x0000000036E40000-memory.dmp
memory/3540-11-0x000000007417B000-0x000000007417C000-memory.dmp
memory/3540-5-0x0000000073FE0000-0x0000000074B99000-memory.dmp
memory/3540-15-0x0000000073FE0000-0x0000000074B99000-memory.dmp