Analysis
- max time kernel
149s - max time network
152s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
- submitted
04/08/2026, 19:52
General
- Target xwormExploit.exe
- Size 213KB
- Sample260804-yllz8adk3t
- SHA256 554b930e81f252ff6b23d84fa654514d141acf0a5382a5ca5c329347a9eb5b1c
Score
10/10
Malware Config
Extracted
Family
-
neptunerat
C2
-
imthereallord-36375.portmap.host:36375
Attributes
-
filename
USB.exe
-
group
MasonGroup
-
key
EPWAUIaPJOtp2i6Q
-
rat_name
MasonRAT
Signatures
- Family: NeptuneRAT, MasonRAT
NeptuneRAT aka MasonRAT is a trojan written in C#.
- Detects NeptuneRAT stealer 3 IoCs
- Executes dropped EXE 1 IoCs
- Contacts third-party web service commonly abused for C2 1 TTPs 3 IoCs
Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\xwormExploit.exe"C:\Users\Admin\AppData\Local\Temp\xwormExploit.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\77777.exe"C:\Users\Admin\AppData\Local\Temp\77777.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
77777.exe
memory/2636-0-0x0000000000780000-0x00000000007BC000-memory.dmp
memory/2636-1-0x000000001CC40000-0x000000001CC50000-memory.dmp
memory/3404-14-0x0000000000700000-0x0000000000712000-memory.dmp
memory/3404-15-0x0000000002950000-0x0000000002960000-memory.dmp
memory/3404-16-0x0000000002950000-0x0000000002960000-memory.dmp