Analysis
- max time kernel
149s - max time network
152s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
17/03/2026, 02:44
General
- Target avastsvc/AvastSvc.exe
- Size 60KB
- Sample260317-c8ec1ads6v
- SHA256 85ca20eeec3400c68a62639a01928a5dab824d2eadf589e5cbfe5a2bc41d9654
Malware Config
Extracted
-
plugx
-
45.142.166.112:443
-
45.142.166.112:110
-
folder
AvastSvcpCP
Signatures
- PlugX
PlugX is a RAT (Remote Access Trojan) that has been around since 2008.
- Plugx family
- Executes dropped EXE 2 IoCs
- Loads dropped DLL 2 IoCs
- Adds Run key to start application 2 TTPs 2 IoCs
- Enumerates connected drives 3 TTPs 2 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
- System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Modifies registry class 6 IoCs
- Suspicious behavior: EnumeratesProcesses 12 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\avastsvc\AvastSvc.exe"C:\Users\Admin\AppData\Local\Temp\avastsvc\AvastSvc.exe"1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
-
C:\ProgramData\AvastSvcpCP\AvastSvc.exeC:\ProgramData\AvastSvcpCP\AvastSvc.exe 4322⤵
- Executes dropped EXE
- Loads dropped DLL
- Enumerates connected drives
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\ProgramData\AvastSvcpCP\AvastSvc.exe"C:\ProgramData\AvastSvcpCP\AvastSvc.exe" 4321⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Modifies registry class
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
AvastAuth.dat
AvastSvc.exe
wsc.dll
memory/1748-21-0x0000000000D70000-0x0000000000E70000-memory.dmp
memory/1748-20-0x0000000000E70000-0x0000000004AA8000-memory.dmp
memory/4100-16-0x0000000000EC0000-0x0000000004AF8000-memory.dmp
memory/4100-13-0x0000000000EC0000-0x0000000004AF8000-memory.dmp
memory/4100-15-0x0000000000EC0000-0x0000000004AF8000-memory.dmp
memory/4100-14-0x0000000000DC0000-0x0000000000EC0000-memory.dmp
memory/4100-22-0x0000000000DC0000-0x0000000000EC0000-memory.dmp
memory/4100-23-0x0000000000EC0000-0x0000000004AF8000-memory.dmp
memory/4100-24-0x0000000006780000-0x00000000067CA000-memory.dmp
memory/4100-30-0x0000000000EC0000-0x0000000004AF8000-memory.dmp
memory/4100-34-0x0000000000EC0000-0x0000000004AF8000-memory.dmp
memory/4100-35-0x0000000000EC0000-0x0000000004AF8000-memory.dmp
memory/4100-38-0x0000000000EC0000-0x0000000004AF8000-memory.dmp
memory/4680-2-0x0000000001020000-0x0000000001120000-memory.dmp
memory/4680-1-0x0000000001120000-0x0000000004D58000-memory.dmp