Detections

Explore public detection logic contributed by the community across SIEM and rule languages.

3,004 detections

Identifies when an account hasn't signed in during the past n number of days.
avatar
SigmaHQ Detections@sigmaHQ
avatar
SigmaHQ
6 months ago
000
Identifies when a privilege role assignment has taken place outside of PIM and may indicate an attack.
avatar
SigmaHQ Detections@sigmaHQ
avatar
SigmaHQ
6 months ago
000
Identifies when the same privilege role has multiple activations by the same user.
avatar
SigmaHQ Detections@sigmaHQ
avatar
SigmaHQ
6 months ago
000
Identifies when a privilege role can be activated without performing mfa.
avatar
SigmaHQ Detections@sigmaHQ
avatar
SigmaHQ
6 months ago
000
Identifies when a user has been assigned a privilege role and are not using that role.
avatar
SigmaHQ Detections@sigmaHQ
avatar
SigmaHQ
6 months ago
000
Clear command history in network OS which is used for defense evasion
avatar
SigmaHQ Detections@sigmaHQ
avatar
SigmaHQ
6 months ago
000
See what files are being deleted from flash file systems
avatar
SigmaHQ Detections@sigmaHQ
avatar
SigmaHQ
6 months ago
000
Detects removal of an exported Exchange mailbox which could be to cover tracks from ProxyShell exploit
avatar
SigmaHQ Detections@sigmaHQ
avatar
SigmaHQ
6 months ago
000
Detects modifications to Default Domain or Default Domain Controllers Group Policy Objects (GPOs).
Adversaries may modify these default GPOs to deploy malicious configurations across the domain.
avatar
SigmaHQ Detections@sigmaHQ
avatar
SigmaHQ
6 months ago
000
An attacker can use the SID history attribute to gain additional privileges.
avatar
SigmaHQ Detections@sigmaHQ
avatar
SigmaHQ
6 months ago
000
KQL Query from file: Admin consent for M365 Connector for Claude
avatar
Steven Lim@KQLWizard
avatar
SlimKQL 2026
7 months ago
640918
Detects when a new admin role assignment is created. Which could be a sign of privilege escalation or persistence
avatar
SigmaHQ Detections@sigmaHQ
avatar
SigmaHQ
6 months ago
000
Detects when an Network Zone is Deactivated or Deleted.
avatar
SigmaHQ Detections@sigmaHQ
avatar
SigmaHQ
6 months ago
000
This rule detects the presence of newly exposed risky web components, such as administrative panels or development tools, that have been discovered by Microsoft Defender External Attack Surface Management (EASM). The rule identifies components from a predefined list of 'risky_components' that have been seen for the first time within the last 7 days, indicating a recent exposure that could increase the attack surface.
avatar
Tech Creaatives@Techcreaatives
avatar
Detections.ai Community
7 months ago
151332
KQL Query
avatar
Steven Lim@KQLWizard
avatar
SlimKQL 2026
7 months ago
620818
Detects unauthorized modifications to the SAP Security Audit Log configuration by monitoring specific SAP system message codes (AUE, AUF, AUI, AUJ, FU0, E05) associated with audit trail changes, excluding known administrative accounts.
avatar
Google SecOps@GoogleSecOps
avatar
Google SecOps Detection Rules
6 months ago
003
Detects early-stage collection and reconnaissance activities targeting sensitive email data prior to exfiltration via Exchange cmdlets. This rule identifies the use of 'New-MailboxSearch' and 'Get-Recipient' cmdlets, which can be leveraged by adversaries to discover and collect email-related information. Detection covers both endpoint PowerShell execution and cloud audit logs for Microsoft Exchange Online.
avatar
Brandon Rodriguez@BMRodriguez
avatar
Federal Signal Detections
7 months ago
130267
This rule monitors SAP environments by correlating Change Documents (PFCG) with Security Audit logs to detect when a high-privilege role is assigned to a user. It specifically looks for additions to the AGR_USERS table and correlates this activity with security audit events to attribute the action to a specific source IP and user.
avatar
Google SecOps@GoogleSecOps
avatar
Google SecOps Detection Rules
6 months ago
002
Detects administrative user management (Create/Alter/Drop) and schema deletion within SAP HANA DB.
avatar
Google SecOps@GoogleSecOps
avatar
Google SecOps Detection Rules
6 months ago
002
Detects the modification of sensitive authorization objects (CD1251) within a role. This identifies potential 'backdoor' privilege escalation where a standard role is granted administrative powers (e.g., Debugging or System Table access) via PFCG.
avatar
Google SecOps@GoogleSecOps
avatar
Google SecOps Detection Rules
6 months ago
001
Detects the assignment of administrative privileges or roles within SAP HANA DB.
avatar
Google SecOps@GoogleSecOps
avatar
Google SecOps Detection Rules
6 months ago
001
Page 96 of 144