Analysis
- user interaction
yes - max time kernel
899s - max time network
900s - platform
windows10-2004_x64 - resource
win10v2004-20260911-en - resource tags
- submitted
02/10/2026, 16:49
General
- Target clun.exe
- Size 325KB
- Sample261002-vbprksee53
- SHA256 cf28747dfa8d48f8367a3a32d1b00bd104d199a6a81c699566fc98d1730ed90e
Malware Config
Extracted
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sheetrat
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Sheet_Refreshedsyfytxacmefx
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stamina-launch.tun.ply.gg:60372
Signatures
- Family: Sheetrat, NonEuclid rat
Sheetrat aka NonEuclid RAT is a trojan written in C#.
- Detects Sheetrat obfuscated V1.8 and higher 1 IoCs
Sheetrat aka NonEuclid RAT is a trojan written in C#.
- Detects Sheetrat obfuscated version 1 IoCs
- Modifies WinLogon for persistence 2 TTPs 1 IoCs
- Event Triggered Execution: AppInit DLLs 1 TTPs
Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 5 IoCs
- Drops file in Windows directory 13 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Executes a command shell one-liner 1 TTPs 3 IoCs
Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.
- Reads the TCP/IP host and domain name from the registry 1 TTPs 10 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 3 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious use of AdjustPrivilegeToken 5 IoCs
- Suspicious use of WriteProcessMemory 7 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
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C:\Users\Admin\AppData\Local\Temp\clun.exe"C:\Users\Admin\AppData\Local\Temp\clun.exe"1⤵
- Modifies WinLogon for persistence
- Drops file in Windows directory
- Reads the TCP/IP host and domain name from the registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SYSTEM32\CMD.exe"CMD" /C SchTaSKs /CrEAte /F /sc OnLoGoN /rl HighEst /tn "Microsoft Teams Host" /tr "C:\Windows\xdwdAutodesk Revit Upgrade.exe" & exit2⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\schtasks.exeSchTaSKs /CrEAte /F /sc OnLoGoN /rl HighEst /tn "Microsoft Teams Host" /tr "C:\Windows\xdwdAutodesk Revit Upgrade.exe"3⤵
- Scheduled Task/Job: Scheduled Task
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C:\Windows\SYSTEM32\CMD.exe"CMD" /c SchTaSKs /create /f /sc minute /mo -1 /tn "Sage 50" /tr "C:\Windows\xdwdAutodesk Revit Upgrade.exe" /RL HIGHEST & exit2⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\schtasks.exeSchTaSKs /create /f /sc minute /mo -1 /tn "Sage 50" /tr "C:\Windows\xdwdAutodesk Revit Upgrade.exe" /RL HIGHEST3⤵
- Scheduled Task/Job: Scheduled Task
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C:\Windows\SYSTEM32\CMD.exe"CMD" /c SchTaSKs /create /f /sc minute /mo 5 /tn "Sage 50" /tr "C:\Windows\xdwdPaint.NET.exe" /RL HIGHEST & exit2⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\schtasks.exeSchTaSKs /create /f /sc minute /mo 5 /tn "Sage 50" /tr "C:\Windows\xdwdPaint.NET.exe" /RL HIGHEST3⤵
- Scheduled Task/Job: Scheduled Task
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C:\Windows\xdwdPaint.NET.exeC:\Windows\xdwdPaint.NET.exe1⤵
- Checks computer location settings
- Executes dropped EXE
- Drops file in Windows directory
- Reads the TCP/IP host and domain name from the registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\xdwdAutodesk Revit Upgrade.exe"C:\Windows\xdwdAutodesk Revit Upgrade.exe"2⤵
- Executes dropped EXE
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C:\Windows\system32\wbem\WmiApSrv.exeC:\Windows\system32\wbem\WmiApSrv.exe1⤵
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C:\Windows\xdwdPaint.NET.exeC:\Windows\xdwdPaint.NET.exe1⤵
- Executes dropped EXE
- Drops file in Windows directory
- Reads the TCP/IP host and domain name from the registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\xdwdPaint.NET.exeC:\Windows\xdwdPaint.NET.exe1⤵
- Executes dropped EXE
- Drops file in Windows directory
- Reads the TCP/IP host and domain name from the registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\xdwdPaint.NET.exeC:\Windows\xdwdPaint.NET.exe1⤵
- Executes dropped EXE
- Drops file in Windows directory
- Reads the TCP/IP host and domain name from the registry
- Suspicious use of AdjustPrivilegeToken
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
1Winlogon Helper DLL
1Event Triggered Execution
1AppInit DLLs
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Winlogon Helper DLL
1Event Triggered Execution
1AppInit DLLs
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
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Downloads
xdwdPaint.NET.exe.log
xdwd.dll
memory/1504-0-0x0000000000A80000-0x0000000000AD8000-memory.dmp
memory/1504-32-0x000000001BD60000-0x000000001BD70000-memory.dmp
memory/1504-75-0x000000001C630000-0x000000001C6A6000-memory.dmp
memory/1504-76-0x00000000011F0000-0x00000000011FC000-memory.dmp
memory/1504-77-0x000000001BD30000-0x000000001BD4E000-memory.dmp
memory/1504-78-0x000000001BD60000-0x000000001BD70000-memory.dmp
memory/1504-106-0x000000001CFB0000-0x000000001D0F6000-memory.dmp