Analysis
- user interaction
yes - max time kernel
153s - max time network
154s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
30/10/2026, 11:32
Errors
General
- Target dwe.exe
- Size 48KB
- Sample261030-nnfacaytbv
- SHA256 38d73d1de4016d76d82ed62ba16ee905b05861c006146f65c1274dc0001f2561
Malware Config
Extracted
-
neptunerat
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mskopjyivs.localto.net:2997
-
filename
USB.exe
-
group
MasonGroup
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key
bVFuVmVjIbtJGGDp
-
rat_name
MasonRAT
Signatures
- Family: NeptuneRAT, MasonRAT
NeptuneRAT aka MasonRAT is a trojan written in C#.
- Detects NeptuneRAT stealer 2 IoCs
- Executes dropped EXE 5 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- 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).
- Executes a command shell one-liner 1 TTPs 1 IoCs
Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.
- Program crash 1 IoCs
- 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.
- System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- 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 6 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\dwe.exe"C:\Users\Admin\AppData\Local\Temp\dwe.exe"1⤵
- Adds Run key to start application
- 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\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /f /sc minute /mo 1 /tn "dwe" /tr "C:\Users\Admin\AppData\Roaming\dwe.exe"2⤵
- Scheduled Task/Job: Scheduled Task
-
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C:\Users\Admin\AppData\Local\Temp\tmpBBEA.tmp.exe"C:\Users\Admin\AppData\Local\Temp\tmpBBEA.tmp.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
-
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /k reg delete HKCR /f3⤵
- Executes a command shell one-liner
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C:\Windows\SysWOW64\reg.exereg delete HKCR /f4⤵
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-
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 5032 -s 12603⤵
- Program crash
-
-
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C:\Users\Admin\AppData\Roaming\dwe.exeC:\Users\Admin\AppData\Roaming\dwe.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
-
C:\Users\Admin\AppData\Roaming\dwe.exe"C:\Users\Admin\AppData\Roaming\dwe.exe"1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
-
C:\Users\Admin\AppData\Roaming\dwe.exe"C:\Users\Admin\AppData\Roaming\dwe.exe"1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
-
C:\Users\Admin\AppData\Roaming\dwe.exe"C:\Users\Admin\AppData\Roaming\dwe.exe"1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
-
C:\Windows\system32\AUDIODG.EXEC:\Windows\system32\AUDIODG.EXE 0x00000000000004F8 0x00000000000004FC1⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 5032 -ip 50321⤵
Network
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
1Windows Command Shell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
tmpBBEA.tmp.exe
dwe.exe
memory/5032-20-0x00000000003B0000-0x00000000003C0000-memory.dmp
memory/5032-21-0x00000000029C0000-0x00000000029C6000-memory.dmp
memory/5032-22-0x0000000007660000-0x00000000076F2000-memory.dmp
memory/5032-23-0x0000000007CC0000-0x000000000827A000-memory.dmp
memory/5060-2-0x00007FFB0B3E0000-0x00007FFB0BD84000-memory.dmp
memory/5060-3-0x00007FFB0B3E0000-0x00007FFB0BD84000-memory.dmp
memory/5060-4-0x00007FFB0B3E0000-0x00007FFB0BD84000-memory.dmp
memory/5060-5-0x00007FFB0B3E0000-0x00007FFB0BD84000-memory.dmp
memory/5060-0-0x00007FFB0B56F000-0x00007FFB0B570000-memory.dmp
memory/5060-7-0x00007FFB0B3E0000-0x00007FFB0BD84000-memory.dmp
memory/5060-8-0x00007FFB0B3E0000-0x00007FFB0BD84000-memory.dmp
memory/5060-1-0x0000000000EE0000-0x0000000000EF2000-memory.dmp