Analysis
- max time kernel
150s - max time network
129s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
01/11/2026, 18:15
General
- Target uartassist5.15.exe
- Size 659KB
- Sample261101-wwd19act6t
- SHA256 d08d5123a9779d72e59e738aabde991ee39300c29d46c359d4324623ae3a69dc
Malware Config
Signatures
- Downloads MZ/PE file 1 IoCs
- ACProtect 1.3x - 1.4x DLL software 1 IoCs
Detects file using ACProtect software.
- Loads dropped DLL 2 IoCs
- UPX packed file 19 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Direct Volume Access: Opens a physical disk for reading 1 TTPs 1 IoCs
Opens a raw handle to a physical disk, which bypasses file system access controls and is used for disk inspection, anti-VM checks and privilege checks.
- Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
- 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 FindShellTrayWindow 2 IoCs
- Suspicious use of SendNotifyMessage 2 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\uartassist5.15.exe"C:\Users\Admin\AppData\Local\Temp\uartassist5.15.exe"1⤵
- Downloads MZ/PE file
- Loads dropped DLL
- Direct Volume Access: Opens a physical disk for reading
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
assist.sys
memory/3520-14-0x00000000062F0000-0x0000000006409000-memory.dmp
memory/3520-2-0x0000000000400000-0x0000000000653000-memory.dmp
memory/3520-3-0x0000000000400000-0x0000000000653000-memory.dmp
memory/3520-4-0x0000000000400000-0x0000000000653000-memory.dmp
memory/3520-5-0x0000000000400000-0x0000000000653000-memory.dmp
memory/3520-6-0x0000000000400000-0x0000000000653000-memory.dmp
memory/3520-1-0x0000000000652000-0x0000000000653000-memory.dmp
memory/3520-16-0x00000000062F0000-0x0000000006409000-memory.dmp
memory/3520-0-0x0000000000400000-0x0000000000653000-memory.dmp
memory/3520-15-0x0000000000400000-0x0000000000653000-memory.dmp
memory/3520-21-0x0000000000400000-0x0000000000653000-memory.dmp
memory/3520-18-0x00000000062F0000-0x0000000006409000-memory.dmp
memory/3520-17-0x0000000000400000-0x0000000000653000-memory.dmp
memory/3520-23-0x0000000000400000-0x0000000000653000-memory.dmp
memory/3520-24-0x00000000062F0000-0x0000000006409000-memory.dmp
memory/3520-25-0x0000000000400000-0x0000000000653000-memory.dmp
memory/3520-31-0x0000000000400000-0x0000000000653000-memory.dmp
memory/3520-33-0x0000000000400000-0x0000000000653000-memory.dmp
memory/3520-35-0x0000000000400000-0x0000000000653000-memory.dmp
memory/3520-37-0x0000000000400000-0x0000000000653000-memory.dmp