Analysis
- max time kernel
149s - max time network
150s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
02/10/2026, 06:51
General
- Target Mason111Client.exe
- Size 48KB
- Sample261002-hmwytabd68
- SHA256 395fa603732b5ec6ae715d538fa6c89f0ee10cbcb2bcac472e24092fb4902ac9
Malware Config
Extracted
-
neptunerat
-
25.tcp.vip.cpolar:11938
-
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
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Downloads
memory/4256-0-0x00007FFB4844F000-0x00007FFB48450000-memory.dmp
memory/4256-1-0x0000000000B70000-0x0000000000B82000-memory.dmp
memory/4256-2-0x00007FFB482C0000-0x00007FFB48C64000-memory.dmp
memory/4256-3-0x00007FFB482C0000-0x00007FFB48C64000-memory.dmp
memory/4256-4-0x00007FFB482C0000-0x00007FFB48C64000-memory.dmp
memory/4256-5-0x00007FFB482C0000-0x00007FFB48C64000-memory.dmp
memory/4256-6-0x00007FFB482C0000-0x00007FFB48C64000-memory.dmp
memory/4256-7-0x00007FFB482C0000-0x00007FFB48C64000-memory.dmp
memory/4256-8-0x00007FFB482C0000-0x00007FFB48C64000-memory.dmp
memory/4256-9-0x00007FFB482C0000-0x00007FFB48C64000-memory.dmp