Analysis
- max time kernel
159s - max time network
165s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
24/11/2022, 13:31
General
- Target AvastProxy.exe
- Size 56KB
- Sample221124-qsdcnafh33
- SHA256 560055994a2290b3eb3f354afbf5ebcf4b8d78820f238eae70d76ece81b97c23
Score
10/10
Malware Config
Extracted
Family
-
plugx
C2
-
www.systeminfor.com:80
-
www.systeminfor.com:53
-
www.systeminfor.com:25
Attributes
-
folder
AvastProxyETj
Signatures
- PlugX
PlugX is a RAT (Remote Access Trojan) that has been around since 2008.
- Executes dropped EXE 1 IoCs
- Loads dropped DLL 1 IoCs
- Unexpected DNS network traffic destination 3 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
- Adds Run key to start application 2 TTPs 4 IoCs
- Modifies registry class 3 IoCs
- Suspicious behavior: EnumeratesProcesses 8 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 3 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\AvastProxy.exe"C:\Users\Admin\AppData\Local\Temp\AvastProxy.exe"1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
-
C:\ProgramData\AvastProxyETj\AvastProxy.exeC:\ProgramData\AvastProxyETj\AvastProxy.exe 9532⤵
- Executes dropped EXE
- Loads dropped DLL
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
AvastProxy.exe
AvastProxy.exe
main.dat
wsc.dll
wsc.dll
memory/3068-133-0x0000000000953000-0x0000000000976000-memory.dmp
memory/3068-132-0x0000000000A40000-0x0000000004671000-memory.dmp
memory/4064-140-0x00000000011D0000-0x00000000012D0000-memory.dmp
memory/4064-141-0x00000000010E3000-0x0000000001106000-memory.dmp
memory/4064-142-0x00000000010E3000-0x0000000001106000-memory.dmp