Analysis
- user interaction
yes - max time kernel
42s - max time network
46s - platform
windows10-ltsc_2021_x64 - resource
win10ltsc2021-20260513-en - resource tags
- submitted
01/08/2026, 04:31
General
- Target MasonClient.exe
- Size 48KB
- Sample260801-e5rj9sdf75
- SHA256 71ae22232fb000d7477e463e5f0d0c51b697a7338ed78f8e555c856caadc9a50
Score
10/10
Malware Config
Extracted
Family
-
neptunerat
C2
-
31.6.50.206:2013
Attributes
-
filename
USB.exe
-
group
MasonGroup
-
key
p04dTobrV30xuzeC
-
rat_name
MasonRAT
Signatures
- Family: NeptuneRAT, MasonRAT
NeptuneRAT aka MasonRAT is a trojan written in C#.
- Detects NeptuneRAT stealer 1 IoCs
- Contacts third-party web service commonly abused for C2 1 TTPs 2 IoCs
Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.
- Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\MasonClient.exe"C:\Users\Admin\AppData\Local\Temp\MasonClient.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
memory/5012-0-0x0000000000320000-0x0000000000332000-memory.dmp
memory/5012-1-0x000000001B070000-0x000000001B080000-memory.dmp
memory/5012-2-0x000000001B070000-0x000000001B080000-memory.dmp