Analysis
- max time kernel
900s - max time network
899s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-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
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k GPSvcGroup1⤵
-
C:\Windows\System32\SecurityHealthHost.exe\\?\C:\Windows\System32\SecurityHealthHost.exe {08728914-3F57-4D52-9E31-49DAECA5A80A} -Embedding1⤵
Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
memory/2976-0-0x00007FFB180CF000-0x00007FFB180D0000-memory.dmp
memory/2976-1-0x0000000000C70000-0x0000000000C82000-memory.dmp
memory/2976-2-0x00007FFB17F40000-0x00007FFB188E4000-memory.dmp
memory/2976-3-0x00007FFB17F40000-0x00007FFB188E4000-memory.dmp
memory/2976-4-0x00007FFB17F40000-0x00007FFB188E4000-memory.dmp
memory/2976-5-0x00007FFB17F40000-0x00007FFB188E4000-memory.dmp