Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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FileFix lures append a real-looking file path after a '#' comment character so the Explorer address bar visually shows a benign path while the PowerShell prefix executes silently.
Acronis TRU (Sept 2025) documented a FileFix campaign where a PowerShell loader downloads images from Bitbucket that conceal embedded malicious components, ultimately deploying a Go-based loader and StealC.
After the initial FileFix paste-and-execute step, observed campaigns chain into a secondary download of the real payload using LOLBins or PowerShell web clients.
FileFix JavaScript silently writes the malicious command to the clipboard the instant the lure button is clicked, producing a much shorter human-reaction interval between browser launch and shell spawn than a manually typed path would allow.
Detects reconnaissance and lateral movement activity via kubectl. The rule monitors for the enumeration of Kubernetes secrets or configmaps, and the deployment or application of privileged workloads featuring flags such as hostPath mounts, privileged execution, hostNetwork, or hostPID.
Detects reconnaissance and lateral movement activity via kubectl. The rule monitors for the enumeration of Kubernetes secrets or configmaps, and the deployment or application of privileged workloads featuring flags such as hostPath mounts, privileged execution, hostNetwork, or hostPID.
Detects instances where the WindowsPackageManagerServer.exe (WinGet COM Server) is invoked to perform DSC (Desired State Configuration) operations (via ConfigurationStaticFunctions) by a process other than the standard winget.exe. This behavior is indicative of an attempt to bypass process-based monitoring of winget.exe by interacting directly with the COM API using custom or alternative tools like DSCourier.exe.
Detects instances where cmd.exe spawns a PowerShell process with the '-executionpolicy bypass' argument. This pattern is commonly used by attackers to execute malicious scripts while circumventing Windows PowerShell execution policy restrictions.
Detects the execution of cmd.exe spawned by explorer.exe that contains suspicious command line parameters. The rule specifically targets the use of obfuscated Windows batch substring expansion (e.g., %VAR:~0,1%) or commands being executed directly from common user-writable directories like Temp or Downloads, which are common indicators of malicious LNK file abuse.
Detects the use of Windows command shell variable substring expansion to obfuscate commands. Adversaries use this technique to build malicious command lines dynamically, making them less visible to standard keyword-based detection mechanisms by storing parts of strings in environment variables and reassembling them using substring notation (e.g., %var:~start,length%).
Detects the execution of the Windows ftp.exe binary using the -s parameter (or -s"": syntax) to execute a script file. This behavior is commonly associated with attackers using LOLBAS (Living Off the Land Binaries and Scripts) techniques to execute hidden or obfuscated scripts from mounted virtual hard disks (VHD) to facilitate malicious backdoor execution.
Detects the use of the Windows command shell 'copy' utility to concatenate separate files, such as 'header.doc' and 'body.doc', into an executable file named 'Windowsupdate.exe'. This technique is commonly used by adversaries to reassemble malicious payloads that were split to evade signature-based detection or bypass security controls.
Detects the creation of a 'SystemIn.lnk' persistence shortcut on Windows systems using PowerShell and the WScript.Shell COM object. This activity is associated with the QUICAgent backdoor, part of the QUICSILVER operation, which uses temporary PowerShell scripts to establish persistence.
Detects malicious PowerShell command chains often used in ClickFix campaigns. These commands typically move zip files from the user's Downloads directory to a temporary folder, extract them using the tar utility, and execute an embedded PowerShell script using conhost in headless mode. This technique is designed to bypass AMSI command-line inspection by offloading the actual payload execution to an extracted, unmonitored script.
This rule monitors for two indicators of potentially malicious WinRM activity: first, the execution of suspicious child processes (e.g., cmd.exe, powershell.exe, rundll32.exe, certutil.exe) originating from the Windows Remote Management host process (wsmprovhost.exe); and second, a 'fan-out' pattern where a single account establishes WinRM/PSRemoting sessions on three or more distinct hosts within a short time window, which is often indicative of automated lateral movement or credential abuse.
Detects the execution of control.exe or rundll32.exe with command line arguments pointing to .cpl files located in non-standard, user-writable directories such as Temp, AppData, Downloads, or Users/Public. This is a common technique used by adversaries to proxy execution of malicious payloads while bypassing standard path restrictions.
Detects unauthorized access or decryption attempts related to Group Policy Preferences (GPP) files stored in SYSVOL. Adversaries often target these XML files to extract embedded 'cpassword' attributes, which can be decrypted using publicly known keys to obtain plain-text administrative credentials.
Detects the use of common scripting and command-line utilities (such as curl, python, or bash) to interact with known Polygon blockchain RPC endpoints or specific smart contract addresses/selectors, which may indicate unauthorized interaction with decentralized applications or crypto-assets.
Detects the use of PowerShell's Start-Sleep cmdlet with a duration of 3 minutes or longer within process command lines. This technique is commonly used by malware, such as ClickFix-style droppers, to bypass sandbox time-based analysis by delaying execution until the sandbox timeout period has elapsed.
Detects instances where the Notepad++ executable is launched from a location within the C:\Users\Public\ directory, specifically when the parent process is a Windows scripting engine (wscript.exe or cscript.exe). This pattern is often indicative of an adversary executing a malicious payload staged in a common public directory using script-based wrappers to bypass execution policy or maintain stealth.
Detects network connections, process command line arguments, and DNS queries associated with identified Galago or Panzer ransomware C2, leak site, or contact infrastructure (Tox IDs/Tor .onion addresses).
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