Analysis
- user interaction
yes - max time kernel
149s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20260911-en - resource tags
- submitted
02/10/2026, 06:51
General
- Target Mason111Client.exe
- Size 48KB
- Sample261002-hmwytabd68
- SHA256 395fa603732b5ec6ae715d538fa6c89f0ee10cbcb2bcac472e24092fb4902ac9
Score
10/10
Malware Config
Extracted
Family
-
neptunerat
C2
-
25.tcp.vip.cpolar:11938
Attributes
-
filename
USB.exe
-
group
MasonGroup
-
key
CHoNONI5m33StrBK
-
rat_name
MasonRAT
Signatures
- Family: NeptuneRAT, MasonRAT
NeptuneRAT aka MasonRAT is a trojan written in C#.
- Detects NeptuneRAT stealer 1 IoCs
- 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.
- Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Mason111Client.exe"C:\Users\Admin\AppData\Local\Temp\Mason111Client.exe"1⤵
- Reads the TCP/IP host and domain name from the registry
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
memory/1148-0-0x0000000000980000-0x0000000000992000-memory.dmp
memory/1148-1-0x000000001B730000-0x000000001B740000-memory.dmp
memory/1148-2-0x000000001B730000-0x000000001B740000-memory.dmp