Analysis
- max time kernel
79s - max time network
152s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260710-en - resource tags
- submitted
05/08/2026, 09:28
General
- Target ugbvxgnp.exe
- Size 53KB
- Sample260805-lfrbjayxez
- SHA256 7043ebcb444a82382829c529564093769cb30c5ee0ea1871e64a26988619de92
Malware Config
Extracted
-
neptunerat
-
143.14.44.56:1417
-
filename
USB.exe
-
group
MasonGroup
-
key
x7Dn8m346c6Sf2ow
-
rat_name
MasonRAT
Signatures
- Family: NeptuneRAT, MasonRAT
NeptuneRAT aka MasonRAT is a trojan written in C#.
- Detects NeptuneRAT stealer 2 IoCs
- Executes dropped EXE 3 IoCs
- Adds Run key to start application 2 TTPs 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.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious use of AdjustPrivilegeToken 4 IoCs
- Suspicious use of WriteProcessMemory 1 IoCs
- Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
-
C:\Users\Admin\AppData\Local\Temp\ugbvxgnp.exe"C:\Users\Admin\AppData\Local\Temp\ugbvxgnp.exe"1⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /f /sc minute /mo 1 /tn "ugbvxgnp" /tr "C:\Users\Admin\AppData\Roaming\ugbvxgnp.exe"2⤵
- Scheduled Task/Job: Scheduled Task
-
-
C:\Users\Admin\AppData\Roaming\ugbvxgnp.exeC:\Users\Admin\AppData\Roaming\ugbvxgnp.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
-
C:\Users\Admin\AppData\Roaming\ugbvxgnp.exe"C:\Users\Admin\AppData\Roaming\ugbvxgnp.exe"1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
-
C:\Users\Admin\AppData\Roaming\ugbvxgnp.exe"C:\Users\Admin\AppData\Roaming\ugbvxgnp.exe"1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
-
C:\Users\Admin\AppData\Roaming\ugbvxgnp.exe"C:\Users\Admin\AppData\Roaming\ugbvxgnp.exe"1⤵
Network
MITRE ATT&CK Enterprise v16
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
ugbvxgnp.exe
memory/3128-10-0x00007FFE1B770000-0x00007FFE1C114000-memory.dmp
memory/3128-12-0x00007FFE1B770000-0x00007FFE1C114000-memory.dmp
memory/3128-3-0x00007FFE1B770000-0x00007FFE1C114000-memory.dmp
memory/3128-4-0x00007FFE1B770000-0x00007FFE1C114000-memory.dmp
memory/3128-5-0x00007FFE1B770000-0x00007FFE1C114000-memory.dmp
memory/3128-6-0x00007FFE1B770000-0x00007FFE1C114000-memory.dmp
memory/3128-1-0x00000000009C0000-0x00000000009D4000-memory.dmp
memory/3128-8-0x00007FFE1B770000-0x00007FFE1C114000-memory.dmp
memory/3128-9-0x00007FFE1B770000-0x00007FFE1C114000-memory.dmp
memory/3128-13-0x00007FFE1B770000-0x00007FFE1C114000-memory.dmp
memory/3128-2-0x00007FFE1B770000-0x00007FFE1C114000-memory.dmp
memory/3128-11-0x00007FFE1B770000-0x00007FFE1C114000-memory.dmp
memory/3128-0-0x00007FFE1B8FF000-0x00007FFE1B900000-memory.dmp
memory/3128-15-0x00007FFE1B770000-0x00007FFE1C114000-memory.dmp
memory/3128-16-0x00007FFE1B770000-0x00007FFE1C114000-memory.dmp
memory/3128-17-0x000000001BE60000-0x000000001BE8D000-memory.dmp
memory/3128-18-0x00007FFE1B770000-0x00007FFE1C114000-memory.dmp
memory/3128-19-0x00007FFE1B770000-0x00007FFE1C114000-memory.dmp
memory/3128-20-0x00007FFE1B770000-0x00007FFE1C114000-memory.dmp
memory/3128-21-0x00007FFE1B770000-0x00007FFE1C114000-memory.dmp
memory/3128-22-0x00007FFE1B770000-0x00007FFE1C114000-memory.dmp
memory/3128-23-0x00007FFE1B770000-0x00007FFE1C114000-memory.dmp