Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
2,146 detections
Filters
Last updated
All Time
Detection languages
679
377
340
230
173
Contributors
630
378
354
143
119
Categories
835
831
746
387
348
Platforms
1,580
584
492
263
118
Products / Services
10,680
9,761
6,694
4,418
3,744
2,146
MITRE Techniques
655
561
377
331
286
CVEs
32
20
8
7
6
IDS Classtypes
65
32
23
19
14
IDS Protocols
47
38
30
30
12
Detects suspicious user agent strings commonly used by various malware families and Remote Access Trojans (RATs) in proxy logs. This rule identifies specific user-agent patterns associated with known threats like DragonOK, PlugX, HTTPBrowser RAT, njRAT, ZeroAccess, Dyre, Upatre, Ghost419, W32/Renos.Downloader, Kazy, Sality, Fareit, Toby web shell, Loki Bot, Pony, MacControl malware, Zebrocy, Ursnif, Emotet, Lockbit, Quasar RAT, Havana, AntSword, Racoon Stealer, AresLoader, Lilith Stealer, SVC Loader, WSHRAT, Zerobot, Nymaim, DarkCloud, BunnyStealer, SparkRAT, B4B3RAT, and Latrodectus loader.
This rule detects suspicious user agent strings commonly used by various hacking tools, including vulnerability scanners, brute-force tools, and SQL injection tools, within proxy logs. The rule identifies specific strings indicative of tools like Arachni, Hydra, DirBuster, SQLMap, and others, which are often employed during reconnaissance, initial access, and credential access phases of an attack.
Detects exploitation attempts targeting Oracle WebLogic servers using the CVE-2020-14882 vulnerability. The rule specifically looks for URI query patterns indicative of directory traversal attempts used in the exploit.
Detects suspicious and malformed user agent strings in proxy logs that may indicate malicious activity, including the use of specific malware or tools like Cobalt Strike, APT28 malware, Racoon Stealer, and Erbium stealer. The rule identifies various anomalies such as incorrect formatting, typos, and specific user agent strings known to be associated with adversary tools.
This rule detects suspicious user agent strings commonly associated with various Advanced Persistent Threat (APT) groups and malware families. It specifically targets patterns found in proxy logs, indicating potential command and control (C2) communications or other malicious web activity. The rule includes a broad list of user agent strings linked to specific APTs like Backspace, GrizzlySteppe, Comment Crew, Naikon, Sofacy (Xtunnel, Zebrocy), Derusbi, Winnti, APT17, Bronze Butler (Daserf), TSCookie, Delphi downloader, VPNFilter, FELIXROOT, RMS, Cmstar, KerrDown, APT33 (PowerTon), Hidden Cobra, Strong Pity, Mustang Panda, BackdoorDiplomacy, SideWalk, LitePower (WRITE), ZINC, PlugX, and RedCurl.
This rule detects the usage of cleartext protocols over a network by monitoring firewall logs for allowed connections to specific destination ports commonly associated with unencrypted services. These ports include HTTP (80, 8080), FTP (21), Telnet (23), and various database or application-specific ports (e.g., 1433, 3306, 1521, 27017, 50000, 11211, 15672, 5900-5904). The rule specifically looks for 'forward' or 'accept' actions, or connections not marked as 'blocked', indicating active cleartext communication. The primary goal is to identify potential credential exposure or sensitive data transmission over insecure channels.
This rule detects attempts to execute common Windows operating system commands via HTTP GET requests, which is a common characteristic of web shell activity. The rule specifically looks for URL-encoded versions of commands like 'whoami', 'net user', 'cmd /c', 'powershell', 'tasklist', 'wmic', 'ssh', 'python', 'ipconfig', 'wget', 'curl', 'certutil', 'copy \\', 'dsquery', and 'nltest'. These commands are often used by attackers to gain information about the compromised system, escalate privileges, or establish further persistence after deploying a web shell.
This rule detects suspicious DNS queries specifically targeting 'api.telegram.org'. This domain is used by Telegram Bot API, which can be leveraged by various types of malware (e.g., RATs, ransomware) for command and control (C2) or data exfiltration. Monitoring these queries helps identify systems potentially communicating with malicious Telegram bots.
Detects attempts to exploit Java-based web applications by identifying common payload strings often used in vulnerabilities like those affecting Confluence (CVE-2022-26134, CVE-2021-26084) and other Java deserialization or expression language injection flaws. The rule looks for specific patterns in web access logs that indicate the presence of Java code execution attempts, such as references to Java classes, runtime execution commands, and encoded characters often used in exploit payloads.
Detects exploitation attempts against Fortinet SSL VPNs using the CVE-2018-13379 vulnerability. This vulnerability allows an unauthenticated attacker to read arbitrary files on the system via a specially crafted URI.
Detects potential Command and Control (C2) communication associated with the Small Sieve malware. This rule specifically looks for HTTP GET requests to 'api.telegram.org' with a specific chat_id and 'text=com/' in the URI, which are indicators of Small Sieve's use of the Telegram Bot API for C2.
This rule detects HTTP POST requests that exhibit characteristics commonly associated with the Empire post-exploitation framework. Specifically, it looks for a combination of a distinct user-agent string ('Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko') and specific URI paths ('/admin/get.php', '/news.php', '/login/process.php'). This pattern is indicative of an Empire agent communicating with its command and control server.
This rule detects Cobalt Strike Malleable C2 profile patterns by analyzing HTTP proxy logs. It looks for specific User-Agent strings, HTTP methods (GET/POST), URIs, and hostnames that are characteristic of known Cobalt Strike profiles, including those mimicking Amazon, generic browsers, OCSP, and OneDrive traffic. The rule aims to identify command and control communications attempting to blend in with legitimate web traffic.
Detects potential command and control (C2) beaconing activity to domains identified as being used in the 'Operation Triangulation' campaign, which targeted iOS devices with 0-day exploits. This rule specifically looks for connections to a list of known malicious domains via proxy logs.
Detects exploitation attempts against Citrix Netscaler, Application Delivery Controller (ADS), and Citrix Gateway by identifying specific URI query patterns associated with CVE-2020-8193 and CVE-2020-8195.
Detects exploitation attempts targeting CVE-2021-27905, an arbitrary file read and SSRF vulnerability affecting Apache Solr versions up to and including 8.8.1. The rule looks for specific patterns in HTTP request URIs that are indicative of this vulnerability being exploited, such as requests containing '/solr/', '/debug/dump?', 'param=ContentStream', or 'command=fetchindex' with 'masterUrl='.
This rule detects outbound network connections to ngrok tunneling service endpoints. Ngrok is a legitimate tool that can be used to expose local servers to the internet, but it is also frequently leveraged by malicious actors for data exfiltration, command and control, and bypassing network restrictions. Detection of communication to these specific ngrok domains could indicate unauthorized use of the service for malicious purposes.
This rule detects the use of Background Intelligent Transfer Service (BITS) to connect to IP addresses directly, rather than fully qualified domain names (FQDNs). This behavior can be indicative of malicious activity, as adversaries often use BITS for command and control or data transfer, and connecting to IP addresses can be a way to bypass DNS-based security controls or to obscure the true destination.
Detects potential beaconing activity from the 3CXDesktopApp to known malicious domains associated with the 3CX supply chain compromise. This rule identifies outbound network connections initiated by the 3CXDesktopApp.exe process to a specific list of suspicious hostnames, indicating potential command and control communication.
This rule detects direct access to raw content hosted on various paste services. Adversaries often use these services to host malicious code (e.g., encrypted or encoded payloads) that is downloaded in subsequent stages of an attack, leveraging the services for command and control or defense evasion.
Detects HTTP requests with an empty user agent string in proxy logs. This can indicate an uncommon or potentially malicious request method, as legitimate browsers and many applications typically send a user agent. PowerShell's `(New-Object Net.WebClient).DownloadString` is one example of a tool that might generate such a request.
Page 100 of 103