Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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This rule detects the execution of potentially malicious binaries masquerading as legitimate Windows utilities (e.g., Windows Update, Defender, or Phone Link) from within a ScreenConnect temporary directory. This behavior is indicative of a phishing attack where an adversary uses remote access tools to stage and execute malicious payloads on a victim's system.
This rule detects persistence mechanisms involving the modification of Windows Registry 'Run' keys or the addition of executable/script files to the Windows Startup folder. It flags suspicious file types (vbs, js, hta, ps1, lnk) or the usage of common living-off-the-land binaries (wscript, cscript, powershell, mshta) when interacting with these persistence locations, while filtering out known benign processes like trustedinstaller.exe and explorer.exe.
Detects the creation of .aspx, .ashx, or .asp files within Exchange OWA/ECP or IIS wwwroot directories by web server processes (w3wp.exe or UMWorkerProcess.exe). This pattern is consistent with web shell deployment following the exploitation of public-facing web applications, a technique often used by threat actors like APT40.
Detects potential persistence mechanism of the Antino implant, involving the creation of a file under the directory '%LOCALAPPDATA%\Windows GatherOSStateKit\' followed by a corresponding entry in the HKCU Run registry key to maintain persistence upon user logon.
Detects UNC6240 PSEMHUB.war web shell/tunnel/trojanized installer artifacts by distinctive content markers (x.jsp, u.jsp, tunnel.jsp/jspx, Ple64.exe)
This rule detects potential exploitation of the Oracle PeopleSoft PSEMHUB component vulnerability (CVE-2026-35273). It identifies suspicious POST requests to the PSEMHUB HttpListeningConnector servlet, including obfuscated URL paths, followed by the creation of suspiciously named .jsp or .jspx files in the PSEMHUB.war application directory, which is indicative of a web shell deployment.
This rule detects potential exploitation of the Oracle PeopleSoft PSEMHUB component vulnerability (CVE-2026-35273). It identifies suspicious POST requests to the PSEMHUB HttpListeningConnector servlet, including obfuscated URL paths, followed by the creation of suspiciously named .jsp or .jspx files in the PSEMHUB.war application directory, which is indicative of a web shell deployment.
Detects Neo-reGeorg tunnel.jsp/tunnel.jspx servlets used by UNC6240 to establish SOCKS5-over-HTTP(S) tunneling from compromised PeopleSoft PSEMHUB.war hosts
Detects the behavior of LunexStealer targeting cryptocurrency wallets. The rule monitors for the enumeration of known crypto wallet files and browser-stored extension data, followed closely by the creation of a 'wallet.zip' archive by the same process, which is indicative of staged data collection for exfiltration.
Detects the 2CLoader malware dropping and executing a payload from user-writable directories such as Temp or Downloads. The rule identifies suspicious process lineage by checking for a parent-process spoofing scenario where the reported parent is explorer.exe, but the actual initiator is a different process, excluding common legitimate installer filenames to reduce noise.
Detects the 2CLoader malware dropping and executing a payload from user-writable directories such as Temp or Downloads. The rule identifies suspicious process lineage by checking for a parent-process spoofing scenario where the reported parent is explorer.exe, but the actual initiator is a different process, excluding common legitimate installer filenames to reduce noise.
Detects the 2CLoader malware dropping and executing a payload from user-writable directories such as Temp or Downloads. The rule identifies suspicious process lineage by checking for a parent-process spoofing scenario where the reported parent is explorer.exe, but the actual initiator is a different process, excluding common legitimate installer filenames to reduce noise.
Detects the 2CLoader malware dropping and executing a payload from user-writable directories such as Temp or Downloads. The rule identifies suspicious process lineage by checking for a parent-process spoofing scenario where the reported parent is explorer.exe, but the actual initiator is a different process, excluding common legitimate installer filenames to reduce noise.
Detects the creation of a 'roblox_cookies.txt' file within a Roblox-related directory, correlated with a process command line containing the '.ROBLOSECURITY' token. This behavior is indicative of malware harvesting session tokens for credential theft.
Detects the creation of ransom or extortion note files within known web server directories immediately following suspicious HTTP activity targeting an internet-facing host. This pattern aligns with known ShinyHunters extortion tactics where applications are exploited to deploy extortion notes.
Detects a sequence of events where a potential multimedia lure (PDF, image, or media file) is created or downloaded via a web browser or communication client, followed by an AI agent (e.g., ChatGPT, Claude) accessing the file, and subsequently initiating a shell execution process (PowerShell, CMD, etc.) involving suspicious command-line patterns or references to the original file. This behavior is indicative of an AI-assisted prompt injection attack where malicious content is processed and executed through agent tooling.
Detects anomalous AI-assisted activity where multiple processes (specifically AI developer tools) appear to be chaining operations by writing to and reading from shared local directories (e.g., 'handoff', 'artifacts') followed by network requests to known AI service APIs. This pattern may indicate automated task chaining or unauthorized exfiltration of context/code to AI platforms.
Detects activity associated with the SharePoint ToolShell exploitation chain, specifically monitoring the w3wp.exe process for spawning suspicious child processes like cmd.exe or powershell.exe, and the creation of unexpected .aspx files within the SharePoint LAYOUTS directory.
Detects the on-disk presence of a malicious Firefox browser extension, 'pdf-para-texto@extensao.local', used for credential or data harvesting. The rule monitors for the creation of its manifest file or XPI package in specific directories, indicating the staging or installation of the malicious extension.
This rule performs a retrospective hunt for indicators of compromise (IOCs) associated with the ClosedQuorum malware. It identifies suspicious activity by matching against known file hashes, specific filenames, and network traffic directed towards services (such as DeepSeek, OpenRouter, Mistral, and Discord) which the malware uses for C2 or data exfiltration. The detection logic aggregates results from file system, process, and network telemetry.
Detects a multi-stage infection chain associated with RedFlick, involving the delivery of VHDX files or PDF attachments. The rule correlates malicious activities such as SSH-based tool download (using PermitLocalCommand), PowerShell-based PDF decoding/extraction, PowerShell VHDX disk mounting, and silent MSI installation from remote URLs. It monitors for these activities within user-writable directories like Downloads or Temp.
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