Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
9,759 detections
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Detects the loading of specific commonly side-loaded DLLs (libcef.dll, version.dll, msimg32.dll) from user-writable directories such as Downloads, Temp, or AppData. Attackers often use these locations to drop malicious DLLs alongside legitimate applications to achieve DLL side-loading for persistence or defense evasion.
Detects unauthorized non-browser processes attempting to access Chrome browser master keys or bypass App-Bound Encryption by interacting with the Chrome IElevator service, DPAPI routines, or the 'Local State' configuration file. This behavior is indicative of infostealer activity aiming to decrypt browser-stored session cookies and credentials.
Detects activity indicative of the 'ClickFix' social engineering technique, where users are tricked into manually executing obfuscated commands (often from fake CAPTCHA or error prompts) via the Windows Run dialog or command-line interfaces. The rule correlates suspicious process execution (e.g., mshta, powershell, certutil, curl) originating from explorer.exe with the detection of common encoded/obfuscated command line patterns, or interactions with the Windows RunMRU registry key, which logs commands typed into the Run dialog.
Detects the startup or configuration of the WebClient service, commonly associated with WebDAV redirection, followed within 15 minutes by a process (e.g., control.exe, rundll32.exe, svchost.exe) interacting with a WebDAV-style UNC path. This behavioral pattern is indicative of attackers, such as the Star Blizzard group, abusing built-in Windows functionality to facilitate credential theft or remote file execution via malicious WebDAV shares.
This rule detects unauthorized process creation from the SharePoint worker process (w3wp.exe). It specifically monitors for the spawning of command-line shells or scripting engines, which is indicative of exploitation activity such as remote code execution (RCE) attempts against SharePoint services, including deserialization attacks.
This rule detects unauthorized process creation from the SharePoint worker process (w3wp.exe). It specifically monitors for the spawning of command-line shells or scripting engines, which is indicative of exploitation activity such as remote code execution (RCE) attempts against SharePoint services, including deserialization attacks.
Detects the first-ever observed network connection from a device to WhatsApp Web or Telegram Web within a 30-day lookback period. This behavior is used to identify potentially unauthorized companion-device linking to a user's messenger account, which could indicate credential theft or unauthorized access.
Detects service-creation commands (sc create / New-Service / reg add under a Services key) whose COMMAND LINE itself references a known NeedyMantis binary name or sideload staging folder. Requiring the malicious reference to appear in the command being executed -- rather than merely in the calling process's own folder location -- removes false matches from unrelated legitimate software that happens to be installed under a similarly-named folder.
Detects a .ps1-named file being loaded as an executable image or created as a process's own file name (both anomalous under normal Windows semantics, since PowerShell always runs scripts via powershell.exe/pwsh.exe as the process image, never as the .ps1 itself). Anchored to the known NeedyMantis sideload staging folders to exclude unrelated developer/test tooling elsewhere on disk that might trip a similar anomaly.
Matches published SHA-256 hashes for the Kothamine Injector and Agent DLL, which drop MicrosoftEdgeUpdateCore.exe/.dll and inject into explorer.exe. Exact full-file SHA-256 match only, no fuzzy or partial matching, no additional PE structural checks.
Detects unauthorized processes attempting to access the cloud instance metadata service (169.254.169.254). Adversaries frequently target this endpoint to extract sensitive instance information, such as IAM credentials or configuration data, typically as part of post-exploitation discovery or SSRF-based attacks.
Detects the abuse of built-in Windows binaries 'regsvr32.exe' and 'msbuild.exe' for proxy execution. Specifically, it flags 'regsvr32.exe' loading remote scriptlets via HTTP and 'msbuild.exe' processing project files containing inline tasks, which are common techniques used to execute arbitrary malicious code while bypassing security controls.
Detects suspicious PowerShell process creation patterns often associated with malicious activity. The rule identifies PowerShell execution invoked by common parent processes (like Office applications or scripting engines) or using highly suspicious command-line arguments such as encoded commands, hidden windows, or common download and execution patterns (e.g., IEX, WebClient).
Detects ClickFix-style social engineering attacks where users are tricked into pasting malicious payloads into the Windows Run dialog. The rule monitors for common scripting interpreters (powershell.exe, cmd.exe, mshta.exe, rundll32.exe) spawned by explorer.exe or mstsc.exe with suspicious command-line patterns indicative of payload delivery, such as obfuscated strings, hidden windows, or short-URL downloads.
Detects the loading of a legitimately signed but vulnerable driver from suspicious directories (e.g., Temp, Downloads) followed closely by the termination of critical security/EDR service processes. This sequence is indicative of Bring Your Own Vulnerable Driver (BYOVD) exploitation used to disable security controls prior to ransomware deployment.
Detects scripting interpreters (wscript.exe, cscript.exe, powershell.exe, python.exe) that perform an outbound network connection to known public Generative AI API endpoints and subsequently modify their own script file on disk. This behavior is indicative of sophisticated malware attempting to rewrite its own source code at runtime to evade signature-based detection.
Detects unauthorized modifications to Windows Registry Run/RunOnce keys or the Startup folder. The rule specifically targets persistence attempts where the associated process resides in suspicious directories (Temp, AppData) or uses command-line arguments indicative of script execution (powershell, wscript, mshta, encoded commands, or script extensions). It excludes known legitimate installer behavior involving msiexec or setup processes.
Detects a suspicious sequence of browser navigation/redirection events followed shortly by the manual execution of command-line utilities (PowerShell, CMD, or MSHTA) via explorer.exe, characteristic of 'ClickFix' social engineering attacks where users are tricked into copying and executing commands from their clipboard.
This rule detects the suspicious execution of rundll32.exe or regsvr32.exe, which are commonly abused as Living-off-the-Land Binaries (LOLBins). It identifies potential malicious activity by analyzing command-line arguments for patterns like remote URL requests, usage of scrobj.dll, JavaScript protocols, or specific Squiblydoo attack patterns. Additionally, it monitors for these binaries being executed by parents other than explorer.exe, which is indicative of potential process injection or proxy execution.
Detects attempts to access or dump the memory of the Local Security Authority Subsystem Service (LSASS) process, a technique commonly used by adversaries to harvest domain credentials and clear-text passwords from memory.
Detects unauthorized processes attempting to open handles to the Local Security Authority Subsystem Service (LSASS) process with access rights consistent with credential dumping (e.g., PROCESS_VM_READ, PROCESS_ALL_ACCESS). This rule also specifically flags the use of well-known tools and techniques such as Mimikatz, ProcDump, and the abuse of rundll32.exe with comsvcs.dll for memory extraction, which is indicative of OS Credential Dumping (T1003.001).
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