Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
18,123 detections
Filters
Last updated
All Time
Detection languages
6,549
6,198
1,481
1,002
661
Contributors
3,555
2,652
2,153
2,087
1,515
Categories
7,574
3,900
1,465
1,392
1,330
Platforms
13,730
1,391
1,318
824
738
Products / Services
3,836
3,129
2,455
912
908
MITRE Techniques
18,123
15,639
12,581
8,394
6,215
CVEs
19
18
17
16
14
IDS Classtypes
305
51
24
23
22
IDS Protocols
308
136
13
10
10
This rule detects suspicious command-line activity involving several Windows executables (wscript.exe, cscript.exe, wmic.exe, ssh.exe) when combined with specific keywords. It looks for wscript.exe or cscript.exe executing 'SyncAppvPublishingServer.vbs', wmic.exe executing 'process', 'call', or 'create', or ssh.exe using 'ProxyCommand'. Additionally, the rule filters for command lines containing keywords like 'gal', 'i*x', 'gcm', '*stM*', 'jsdelivr.net', 'github', or 'powershell', which are often associated with malicious activity, obfuscation, or external resource loading.
The Storm-0408 malvertising campaign uses RegAsm.exe from the .NET Framework as a living-off-the-land binary for command and control. After the initial dropper from GitHub establishes a foothold, the malware injects code into RegAsm.exe to connect to C2 over TCP ports 15647 or 9000, exfiltrate data, and access DPAPI. This rule looks for RegAsm.exe launched from a temp or user writable path, which is unusual because the legitimate RegAsm is typically in the .NET Framework directory. In plain terms, it catches when a normal-looking system tool is being used from the wrong place to talk to an attacker.
Kali365 PHaaS Device Code Detection
Cortex XDR
This rule detects potential device code phishing attempts by correlating a device code flow initiated from an unmanaged/non-compliant device with a suspicious user agent (e.g., 'python-requests' or '-live') and an 'unbound' signInTokenProtectionStatus, with a subsequent 'Cmsi:Cmsi' token replay event for the same user. This combination suggests a successful device code phishing attack where an adversary has obtained and is replaying a token after the victim has authenticated.
Detects file creation, modification, or renaming events in the suspicious '%AppData%\WinDataScope' directory. This directory is hardcoded in the FrostyNeighbor dropper for staging PicassoLoader, indicating potential malware activity.
Detects wscript.exe launching mshta.exe to execute files in the temporary directory. This behavior is indicative of Gamaredon's GammaDrop launching the GammaLoad HTA payload.
Linux Timestomping via Reference FIle
Cortex XDR
Detects the use of the 'touch' command on Linux with '-m' and '-r' (reference file) or '--reference' arguments. This combination can be used for timestomping, a technique to modify file timestamps to evade detection or forensic analysis by making malicious files appear to have legitimate creation/modification times.
Detects registry modifications setting ConsentPromptBehaviorAdmin to 0, which weakens UAC protections by elevating without prompting. This behavior was observed in the TAX#TRIDENT campaign where a script disguised as a PNG altered UAC policies prior to silently installing a ManageEngine agent.
Detects the execution of rundll32.exe calling a specific exported function ('open') associated with the fake lock screen DLL ('com6848.dll') to capture user passwords. This technique is often used in credential harvesting campaigns.
Detektiert Gremlin Stealer TTPs wie Crypto-Clipping oder Session-Hijacking durch Analyse von verdächtigen Prozessbefehlen und Ressourcen-Manipulation laut Unit 42 Bericht.
Monitors Cisco Catalyst SD-WAN Controller logs for successful administrative logins. This may indicate exploitation of an authentication bypass vulnerability granting unauthorized admin access.
Linux SELinux Setenforce
Cortex XDR
Detects attempts to disable SELinux by executing the 'setenforce 0' command on Linux systems. Disabling SELinux can reduce the security posture of a system and is often performed by attackers to bypass security controls.
Detects the creation of an unexpected LaunchAgent property list named 'com.google.keystone.agent.plist' paired with the creation or execution of a binary at '~/Library/Application Support/Google/GoogleUpdate.app/Contents/MacOS/GoogleUpdate'. This exact path and plist combination is used by the SHub Reaper malware to establish persistent backdoor access while masquerading as a Google software update.
Detects possible MFA-approved session replay by identifying abnormal reuse of authenticated sessions across multiple IPs, browsers, and devices compared against a 14-day historical baseline. The rule prioritizes browser/device anomalies over geography since modern attackers often use same-country VPS/proxies.
Detects attempts to disable or tamper with PowerShell logging mechanisms (Script Block Logging, Module Logging, Transcription) by modifying or deleting specific registry keys or setting their values to disable logging. This activity is often performed by adversaries to evade detection.
Correlation rule that counts the events produced by Kubernetes Audit Event Deletion base rule
Detects make explicitly loading a Makefile from temporary or non-standard locations, often used to run arbitrary commands (due to writeable capability) via a trusted build utility.
Detects Microsoft 365 access attempts where the ClientAppId masquerades as Microsoft Office (d3590ed6-52b3-4102-aeff-aad2292ab01c) to bypass conditional access policies, but the UserAgent string reveals the use of a programmatic script (e.g., Python, PowerShell). This mismatch is a known tactic utilized by UNC6671 (BlackFile) during automated data exfiltration operations.
Detects network connections or DNS queries to known lookalike domains utilized by UNC6671 (BlackFile) for adversary-in-the-middle (AiTM) credential harvesting and real-time MFA bypass during vishing operations.
Systeminfo.exe Making Network Connection
Cortex XDR
Detects network connections originating from the systeminfo.exe process. This activity is suspicious because systeminfo.exe is a legitimate system enumeration tool not typically expected to initiate outbound network connections. This behavior has been observed in malware campaigns, such as CountLoader, which injects a cryptocurrency clipper into systeminfo.exe to communicate with C2 servers and the Ethereum blockchain.
Tycoon2FA Known Infrastructure Detection
Cortex XDR
This rule detects suspicious sign-in attempts to Microsoft 365 accounts that originate from known Tycoon2FA infrastructure. It specifically looks for device code flow authentications from IP addresses and Autonomous System Numbers (ASNs) associated with Tycoon2FA, combined with indicators like unmanaged/non-compliant devices, specific user agent patterns (axios, node, undici), and particular application IDs, and an unbound sign-in token protection status. This combination of indicators suggests an attempt to hijack Microsoft 365 accounts using device code phishing.
Detects abnormal MFA session behavior by monitoring user sessions with multiple IPs or browsers over 24h. Note: KQL 14-day historical baseline and set_difference logic is approximated.
Page 476 of 863