Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
40,057 detections
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Detects the installation or update of a browser extension that requests specific host permissions related to Twitch (gql.twitch.tv, usher.ttvnw.net, id.twitch.tv) combined with suspicious domains (jeetbot.cc, drisnya.online, morphilina.me, deno.dev, deno.net). This pattern is indicative of malicious browser extensions designed to intercept credentials or manipulate Twitch-related traffic.
Detects anomalous execution or network activity involving a 'content.js' file in conjunction with specific proxy-related artifacts or authorization headers. This pattern is indicative of a malicious browser extension or script attempting to intercept or proxy web traffic and credentials.
This rule detects either the execution of specific files identified by SHA256 hashes or the installation/enabling of browser extensions matching known malicious extension IDs. This monitoring helps identify the introduction of potentially harmful browser-based persistent threats or the presence of known malicious binaries on endpoints.
Detects the presence of known file hashes associated with Vectra Remote Access Trojan (RAT). The rule monitors both file creation/existence events and process execution events where the SHA256 hash matches the identified indicators of compromise.
Detects the presence of known file hashes associated with Vectra Remote Access Trojan (RAT). The rule monitors both file creation/existence events and process execution events where the SHA256 hash matches the identified indicators of compromise.
Detects network communication with identified C2 infrastructure associated with VectraRAT, Amadey, and ClickFix campaigns, as well as the presence of a specific 'callback.json' artifact in temporary directories, which is commonly used for C2 address overrides.
Detects a two-stage pattern indicative of command-and-control (C2) communication. The rule identifies an initial request to a 'relays.json' endpoint (relay discovery) followed by a request to an 'api.php' endpoint (dispatcher decision) within a 5-second window, both using a 13-digit timestamp query string for cache-busting. It also captures single-stage 'api.php' requests as lower confidence alerts.
Detects a two-stage pattern indicative of command-and-control (C2) communication. The rule identifies an initial request to a 'relays.json' endpoint (relay discovery) followed by a request to an 'api.php' endpoint (dispatcher decision) within a 5-second window, both using a 13-digit timestamp query string for cache-busting. It also captures single-stage 'api.php' requests as lower confidence alerts.
Detects a two-stage pattern indicative of command-and-control (C2) communication. The rule identifies an initial request to a 'relays.json' endpoint (relay discovery) followed by a request to an 'api.php' endpoint (dispatcher decision) within a 5-second window, both using a 13-digit timestamp query string for cache-busting. It also captures single-stage 'api.php' requests as lower confidence alerts.
Detects the suspicious registration of a Cloud Filter provider callback using staging paths and naming conventions associated with the ShieldCrash (CVE-2026-69414) exploit. The rule monitors DeviceEvents for cloud provider activity that originates from unsigned or untrusted binaries, excluding known-legitimate cloud synchronization clients.
MicroStealer is a newly emerging infostealer that spreads quickly, evades traditional detection, and focuses on stealing corporate credentials, browser data, session tokens, and cryptocurrency wallets. Its layered delivery chain (NSIS → Electron → Java) and heavy obfuscation make it difficult to detect, while exfiltration occurs via Discord webhooks and attacker‑controlled servers.
Detects potential Qilin ransomware binaries following Cisco FMC-based intrusion by UAT-11988. Source intel provides only name-level attribution (no sample hash/byte IOC for the payload), so this is tightened to a valid PE, a plausible ransomware-payload size band, and >=2 occurrences of the family string -- a bare single 'Qilin' substring in an arbitrary PE (e.g. an unrelated app, build path, or AV/report string) is not sufficient to alert on alone.
Detects network activity and HTTP traffic associated with the Iron Man System kit, specifically targeting hardcoded C2 infrastructure (IP-based) and lure domain patterns involving specific brand tokens combined with disposable TLDs.
Detects network activity and HTTP traffic associated with the Iron Man System kit, specifically targeting hardcoded C2 infrastructure (IP-based) and lure domain patterns involving specific brand tokens combined with disposable TLDs.
This rule performs a hunting activity across multiple telemetry sources (Network, Email, Endpoint) to detect known indicators of compromise (IOCs) associated with Anthropic threat intelligence reporting (September 2026). It looks for specific malware file names, command-line patterns, service installations, phishing email addresses, and C2 communication URLs.
Detects suspected exploitation of CVE-2026-81963, an Elevation of Privilege vulnerability in the Windows Update stack. The rule monitors for the creation of reparse points, junctions, or symbolic links within update staging paths by Windows Update processes, followed by either the spawning of suspicious child processes or unauthorized file writes/renames outside of expected directories, which are indicative of a privileged link-following exploit.
Detects Adobe Acrobat (Acrobat.exe) launched by a suspicious parent process (GRrte.exe) while opening a specific PDF document from the user's temporary directory. This pattern is indicative of a potential malicious document lure often associated with malware delivery.
Detects the execution of taskkill.exe to forcibly terminate the iediagcmd.exe diagnostic process, initiated by the process GRrte.exe. This behavior is indicative of an attempt to impair security or diagnostic tools on the endpoint.
This rule detects network connections and DNS queries associated with the QTFY proxy infrastructure, including specific domains, known proxy management system IPs, and suspicious IP ranges. This behavior is indicative of command and control (C2) activity utilizing proxy services to obfuscate traffic.
This rule detects network connections and DNS queries associated with the QTFY proxy infrastructure, including specific domains, known proxy management system IPs, and suspicious IP ranges. This behavior is indicative of command and control (C2) activity utilizing proxy services to obfuscate traffic.
Detects web requests to 'wp-admin/theme-install.php' containing suspicious query parameters that indicate an attempt to force an unauthenticated theme installation via a Cross-Site Request Forgery (CSRF) exploit (Click2Shell). The rule identifies requests with malicious payloads in the 'theme' parameter, specifically looking for indicators that attempt to bypass CSRF protections when originating from an external site or a non-admin session context.
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