Analysis
- max time kernel
40s - max time network
36s - platform
windows10-2004_x64 - resource
win10v2004-20260911-en - resource tags
- submitted
03/10/2026, 15:54
General
- Target steamclient.dll
- Size 6.7MB
- Sample261003-tcd6sssamd
- SHA256 e4f4b71eebe895db1fedbed1a23344e53f4b9b5cd345faa82b74d9f5f2cafb6f
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.
- Checks whether UAC is enabled 1 TTPs 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 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 AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 1 IoCs
Processes
-
C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\steamclient.dll,#11⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\steamclient.dll,#12⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
memory/2952-0-0x0000000073230000-0x00000000757D9000-memory.dmp
memory/2952-1-0x0000000073230000-0x00000000757D9000-memory.dmp
memory/2952-2-0x0000000073230000-0x00000000757D9000-memory.dmp
memory/2952-3-0x0000000073230000-0x00000000757D9000-memory.dmp
memory/2952-4-0x0000000073230000-0x00000000757D9000-memory.dmp
memory/2952-5-0x0000000073230000-0x00000000757D9000-memory.dmp
memory/2952-6-0x0000000073230000-0x00000000757D9000-memory.dmp
memory/2952-7-0x0000000073230000-0x00000000757D9000-memory.dmp
memory/2952-8-0x0000000073230000-0x00000000757D9000-memory.dmp
memory/2952-9-0x0000000073230000-0x00000000757D9000-memory.dmp
memory/2952-11-0x0000000073230000-0x00000000757D9000-memory.dmp
memory/2952-13-0x0000000073230000-0x00000000757D9000-memory.dmp
memory/2952-14-0x0000000073230000-0x00000000757D9000-memory.dmp
memory/2952-12-0x0000000073230000-0x00000000757D9000-memory.dmp
memory/2952-10-0x0000000073230000-0x00000000757D9000-memory.dmp
memory/2952-16-0x000000007386E000-0x000000007386F000-memory.dmp
memory/2952-18-0x0000000073230000-0x00000000757D9000-memory.dmp
memory/2952-19-0x0000000073230000-0x00000000757D9000-memory.dmp