Sigma detection rules, expert-reviewed

Windows PsExec Named Pipe Creation from Suspicious Paths (PSEXESVC)

Alerts on PsExec pipe \PSEXESVC creation when the executing image path is in public/temp/desktop/downloads locations.

Windows CLI usage of obfuscated IP address patterns in ping/arp commands

Alerts when ping or arp command lines include obfuscated/encoded IP address indicators on Windows.

Windows Process Creation: Obfuscated IP Address in Download Command URLs

Alerts on Windows download commands that include obfuscated/encoded IP addresses in the URL.

Windows named pipe creation matching DiagTrackEoP POC pipe name fragment

Flags Windows creation of a named pipe matching the DiagTrackEoP POC’s default pipe name.

Windows Security Mitigations: Unsigned DLL Blocked from User-Writable Paths

Alerts on blocked unsigned DLL loads targeting public, downloads, desktop, or temp directories in Windows Security Mitigations logs.

Windows Security: DiagTrackEoP POC Default UserName Login Attempt (LogonType 9)

Alerts on Windows 4624 LogonType 9 events targeting a known DiagTrackEoP default username.

Windows Command-Line Tools Performing Web POST Exfiltration via IWR/curl/wget

Identifies PowerShell/curl/wget commands on Windows that use POST-style web requests combined with data-dumping or discovery payloads.

Windows PowerShell Invoke-WebRequest Download to Suspicious Paths

Alert when PowerShell uses Invoke-WebRequest/aliases with download flags and targets suspicious file locations.

Windows: Detect VMwareXferlogs.exe Executed from Non-default Path

Alert on VMwareXferlogs.exe launching from an unexpected directory, a potential DLL sideloading technique on Windows.

Windows mpclient.dll Sideloading via MpCmdRun.exe or NisSrv.exe from Non-Default Paths

Alerts when mpclient.dll is loaded by MpCmdRun.exe or NisSrv.exe outside known Windows Defender directories.

Windows: Potential DLL sideloading via VMwareXferlogs loading glib-2.0.dll from non-standard path

Alerts on VMwareXferlogs.exe loading glib-2.0.dll from outside the default VMware directory.

Windows Code Integrity blocks unsigned DLL loads into MpCmdRun.exe and NisSrv.exe

Flags security-mitigations events where MpCmdRun or NisSrv are prevented from loading unsigned DLLs.

Windows Registry Set to Disable Windows Defender Components

Flags registry changes that turn off Windows Defender protections via Defender and Security Center policy keys.

Windows Registry: Attachment Manager policy tampering via Attachments settings values

Detects registry changes to Windows Attachment Manager policy values that can disable or alter download safety controls.

Windows Registry Tampering: Attachment Manager Associations Default File Type Risk and LowRiskFileTypes

Flags Windows registry changes to Attachment Manager associations that set DefaultFileTypeRisk and modify LowRiskFileTypes.