Analysis
- max time kernel
898s - max time network
900s - platform
windows10-2004_x64 - resource
win10v2004-20260911-en - resource tags
- submitted
22/09/2026, 12:30
General
- Target MasonClient.exe
- Size 48KB
- Sample260922-ppn5baed44
- SHA256 fc0adea25bb6d69cd39e31965e636dccf2e6819ca7f57c165cc880697c208cb2
Score
10/10
Malware Config
Extracted
Family
-
neptunerat
C2
-
fduhgnduhgd-42552.portmap.host:42552
Attributes
-
filename
USB.exe
-
group
MasonGroup
-
key
CP4ui5pzQwVVzj2d
-
rat_name
MasonRAT
Signatures
- Family: NeptuneRAT, MasonRAT
NeptuneRAT aka MasonRAT is a trojan written in C#.
- Detects NeptuneRAT stealer 1 IoCs
- 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 Matrix
Replay Monitor
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Downloads
memory/3940-0-0x0000000000490000-0x00000000004A2000-memory.dmp
memory/3940-1-0x000000001B0A0000-0x000000001B0B0000-memory.dmp
memory/3940-2-0x000000001B0A0000-0x000000001B0B0000-memory.dmp