Detections

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

8,407 detections

Detects instances where LiteLLM, or related Python application processes (uvicorn, python), spawn a shell or command-line utility (bash, sh, id) under the root user account. This behavior is indicative of potential container breakout, application exploitation, or privilege escalation attempts originating from a web-accessible service.
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Arnold Chan@slaz
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Detection & Hunting Community
2 months ago
000
Detects a privilege escalation technique where an attacker with application management permissions adds a credential to the 'Office 365 Exchange Online' service principal (SP). The attacker then leverages the SP's 'Domain.ReadWrite.All' permission to add or modify a federated domain, allowing them to forge tokens for any hybrid user.
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Arnold Chan@slaz
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Midnight Slayer
2 months ago
102
Detects when an attacker tries to disable User Account Control (UAC) notification by tampering with the "UACDisableNotify" value.
UAC is a critical security feature in Windows that prevents unauthorized changes to the operating system. It prompts the user for permission or an administrator password before allowing actions that could affect the system's operation or change settings that affect other users.
When "UACDisableNotify" is set to 1, UAC prompts are suppressed.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 months ago
909
Detects commandline keywords indicative of potential usge of the tool WinPwn. A tool for Windows and Active Directory reconnaissance and exploitation.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 months ago
805
Detect malicious GPO modifications can be used to implement many other malicious behaviors.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 months ago
004
Adversaries may manipulate accounts to maintain access to victim systems.
Account manipulation may consist of any action that preserves adversary access to a compromised account, such as modifying credentials or permission groups
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 months ago
1003
Detects several potentially malicious activities related to Active Directory Certificate Services (AD CS). This includes high volumes of failed requests (potential enumeration), requests for sensitive templates (privilege escalation), and potential impersonation attempts using Subject Alternative Names (SANs). These activities are associated with AD CS abuse techniques.
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Arnold Chan@slaz
Defender - KQL
2 months ago
001
Adversaries may execute their own malicious payloads by hijacking the Registry entries used by services.
Adversaries may use flaws in the permissions for registry to redirect from the originally specified executable to one that they control, in order to launch their own code at Service start.
Windows stores local service configuration information in the Registry under HKLM\SYSTEM\CurrentControlSet\Services
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 months ago
104
Detect malicious GPO modifications can be used to implement many other malicious behaviors.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 months ago
302
Detects scheduled task creations or modification on a suspicious schedule type
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 months ago
202
Detects when an attacker tries to change User Account Control (UAC) elevation request destination via the "PromptOnSecureDesktop" value.
The "PromptOnSecureDesktop" setting specifically determines whether UAC prompts are displayed on the secure desktop. The secure desktop is a separate desktop environment that's isolated from other processes running on the system. It's designed to prevent malicious software from intercepting or tampering with UAC prompts.
When "PromptOnSecureDesktop" is set to 0, UAC prompts are displayed on the user's current desktop instead of the secure desktop. This reduces the level of security because it potentially exposes the prompts to manipulation by malicious software.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 months ago
703
Detects scriptblock text keywords indicative of potential usge of the tool WinPwn. A tool for Windows and Active Directory reconnaissance and exploitation.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 months ago
001
Detection of sc.exe utility adding a new service with special permission which hides that service.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 months ago
002
Detects changes to the "ServiceDLL" value related to a service in the registry.
This is often used as a method of persistence.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 months ago
001
Detects modification of autostart extensibility point (ASEP) in registry. Adversaries may modify these keys to execute malicious code when Office files are opened.
There are various legitimate add-ins that also use these keys and this filter list might not be exhaustive.
Thus, it is recommended to review and tune filters for your environment to reduce false positives before deploying to production.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 months ago
002
Detects the loading of unsigned .node files.
Adversaries may abuse a lack of .node integrity checking to execute arbitrary code inside of trusted applications such as Slack.
.node files are native add-ons for Electron-based applications, which are commonly used for desktop applications like Slack, Discord, and Visual Studio Code.
This technique has been observed in the DripLoader malware, which uses unsigned .node files to load malicious native code into Electron applications.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 months ago
001
Detects successful Microsoft Entra RoleManagement activity where a member is assigned permanently to a role outside of Privileged Identity Management (PIM). This is flagged as a privileged access risk because it bypasses just-in-time eligibility and activation controls.
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Lucas Pinho@lucaslapinho
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Detections.ai Community
2 months ago
10010
Detects Windows Security events (Event IDs 4728 and 4756) where a member is added to a sensitive or privileged Active Directory domain global or universal security group. The rule compares the target group against a locally maintained inventory of monitored groups to identify potential unauthorized privilege escalation or persistence.
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Lucas Pinho@lucaslapinho
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Detections.ai Community
2 months ago
1010
Detects Microsoft Entra audit events where a user is added to either the Global Administrator or Cloud Device Administrator built-in roles, which are high-privilege administrative roles.
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Lucas Pinho@lucaslapinho
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Detections.ai Community
2 months ago
408
Detects instances where a non-root user process launches 'su' or a shell command executing 'su' from an unusual parent process (excluding standard shells like bash/sh/zsh/ksh or elevation tools like sudo/su). This is used to identify suspicious attempts to switch user context or escalate privileges.
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Lucas Pinho@lucaslapinho
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Detections.ai Community
2 months ago
208
Detects the shell open key manipulation (exefile and ms-settings) used for persistence and the pattern of UAC Bypass using fodhelper.exe, computerdefaults.exe, slui.exe via registry keys (e.g. UACMe 33 or 62)
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 months ago
000
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