Analysis
- max time kernel
149s - max time network
152s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
22/09/2026, 20:36
General
- Target MasonClient.exe
- Size 49KB
- Sample260922-zds91asblf
- SHA256 3fb74ab77ce8cb40a47131c94d7ca1de3cfd84dfec663a9fb7fb0d924bd0c7e0
Malware Config
Extracted
-
neptunerat
-
6.tcp.cpolar.cn:14627
-
filename
USB.exe
-
group
MasonGroup
-
key
EmhjU830q3ZXNXZo
-
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 3 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/4472-0-0x00007FFCC9CEF000-0x00007FFCC9CF0000-memory.dmp
memory/4472-1-0x0000000000760000-0x0000000000772000-memory.dmp
memory/4472-2-0x00007FFCC9B60000-0x00007FFCCA504000-memory.dmp
memory/4472-3-0x00007FFCC9B60000-0x00007FFCCA504000-memory.dmp
memory/4472-4-0x00007FFCC9B60000-0x00007FFCCA504000-memory.dmp
memory/4472-5-0x00007FFCC9B60000-0x00007FFCCA504000-memory.dmp
memory/4472-6-0x00007FFCC9B60000-0x00007FFCCA504000-memory.dmp
memory/4472-7-0x00007FFCC9B60000-0x00007FFCCA504000-memory.dmp
memory/4472-8-0x00007FFCC9B60000-0x00007FFCCA504000-memory.dmp
memory/4472-9-0x00007FFCC9B60000-0x00007FFCCA504000-memory.dmp