Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
191 detections
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This rule monitors for the presence of the PoperBlocker browser extension or network traffic directed to associated domains, which are often used by potentially unwanted programs (PUP) or adware.
This rule monitors for the presence of the PoperBlocker browser extension or network traffic directed to associated domains, which are often used by potentially unwanted programs (PUP) or adware.
This rule monitors for the presence of the PoperBlocker browser extension or network traffic directed to associated domains, which are often used by potentially unwanted programs (PUP) or adware.
This rule monitors for the presence of the PoperBlocker browser extension or network traffic directed to associated domains, which are often used by potentially unwanted programs (PUP) or adware.
Detects the installation of unauthorized AI-related browser extensions followed by outbound network communication from the browser process to known external AI service API endpoints within one hour. This behavior is indicative of potential data exfiltration via shadow AI tools, bypassing standard enterprise DLP controls.
This rule monitors for the presence of the PoperBlocker browser extension or network traffic directed to associated domains, which are often used by potentially unwanted programs (PUP) or adware.
Detects the installation of unauthorized AI-related browser extensions followed by outbound network communication from the browser process to known external AI service API endpoints within one hour. This behavior is indicative of potential data exfiltration via shadow AI tools, bypassing standard enterprise DLP controls.
Detects the installation of unauthorized AI-related browser extensions followed by outbound network communication from the browser process to known external AI service API endpoints within one hour. This behavior is indicative of potential data exfiltration via shadow AI tools, bypassing standard enterprise DLP controls.
Detects the installation of unauthorized AI-related browser extensions followed by outbound network communication from the browser process to known external AI service API endpoints within one hour. This behavior is indicative of potential data exfiltration via shadow AI tools, bypassing standard enterprise DLP controls.
Detects the installation of a browser extension that requests excessive permissions, including proxy configuration ('proxy' and 'webRequestAuthProvider') and unrestricted host access ('<all_urls>'). This pattern is commonly exploited by malicious extensions, such as the 'VPN for X' family, to perform adversary-in-the-middle attacks or proxy browser traffic.
Detects network activity associated with the LONGTALE malware family (attributed to APT31/JungleBamboo). This includes identification of specific malicious browser extension IDs in HTTP traffic and signature-based detection of periodic HTTPS/HTTP beaconing patterns indicative of session or cookie exfiltration.
Detects a coordinated attack sequence where a browser process is terminated, followed immediately by the execution of an unsigned Python interpreter from a suspicious location (temp/downloads folder), which is then followed by the installation of an unsigned browser extension. This pattern mimics ClickFix and browser-based RAT lure campaigns.
Detects the creation of a 'manifest.json' file within directory paths containing 'extensions' by a process other than standard web browsers. This behavior is indicative of unauthorized manual installation or modification of browser extensions, which may be used for persistence or to facilitate credential/session theft.
Detects the installation of a specific malicious Firefox browser extension identified by its unique internal ID 'pdf-para-texto@extensao.local' or by its name 'PDF Identity Verifier'. This behavior is characteristic of adversaries using browser extensions for persistence or credential theft.
Detects the installation of unauthorized AI-related browser extensions followed by outbound network communication from the browser process to known external AI service API endpoints within one hour. This behavior is indicative of potential data exfiltration via shadow AI tools, bypassing standard enterprise DLP controls.
Detects the installation of browser extensions that utilize sensitive permissions (e.g., full URL access, cookie access) followed shortly by network connections to potentially non-reputable domains within one hour of the installation. This pattern is indicative of malicious browser extensions established for data exfiltration or credential theft.
Detects a coordinated attack sequence where a browser process is terminated, followed immediately by the execution of an unsigned Python interpreter from a suspicious location (temp/downloads folder), which is then followed by the installation of an unsigned browser extension. This pattern mimics ClickFix and browser-based RAT lure campaigns.
Detects the creation of files associated with Psychedelic Stealer's persistence mechanism. The malware establishes persistence by installing a malicious native messaging host configuration file (com.lunex.explorer.json) and associated malicious scripts (host.ps1 or host.bat), which allows it to intercept and manipulate web browser native messaging.
Detects the creation of files associated with Psychedelic Stealer's persistence mechanism. The malware establishes persistence by installing a malicious native messaging host configuration file (com.lunex.explorer.json) and associated malicious scripts (host.ps1 or host.bat), which allows it to intercept and manipulate web browser native messaging.
Detects the creation of browser extension files (manifest.json, .crx, .xpi) within the default user profile directories for Google Chrome, Microsoft Edge, and Mozilla Firefox. This behavior is indicative of potential unauthorized browser extension installation, which can be used for persistence or data exfiltration.
Detects the creation of registry keys associated with the installation of Chrome or Edge browser extensions, specifically targeting the behavior exhibited by the CrashFix malware which masquerades as an ad blocker to achieve persistence.
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