Detections

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

9,759 detections

Surfaces suspicious spoolsv.exe behavior likely related to CVE-2021-1675
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
0015
'This query identifies modifications to COM registry keys to point to executable files in C:\Windows\System32\spool\drivers\color\'
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
0013
'This query detects a process that runs under SYSTEM user's security context and was spawned by a process that was running under a lower security context indicating an exploitation for privilege escalation.
Ref: https://attack.mitre.org/techniques/T1068/'
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
0011
'This detection looks for the steps required to conduct a UAC bypass using Fodhelper.exe. By default this detection looks for the setting of the required registry keys and the invoking of the process within 1 hour - this can be tweaked as required.'
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
0011
Detects changes to the default RDP port. Remote desktop is a common feature in operating systems. It allows a user to log into a remote system using an interactive session with a graphical user interface. Microsoft refers to its implementation of the Remote Desktop Protocol (RDP) as Remote Desktop Services (RDS).
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Google SecOps@GoogleSecOps
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Google SecOps Detection Rules
1 year ago
001
Detect modification of the startup key to a path where a payload could be stored to be launched during startup
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Google SecOps@GoogleSecOps
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Google SecOps Detection Rules
1 year ago
001
Detects tampering of RDP Terminal Service/Server sensitive settings. Such as allowing unauthorized users access to a system via the 'fAllowUnsolicited' or enabling RDP via 'fDenyTSConnections'...etc
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Google SecOps@GoogleSecOps
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Google SecOps Detection Rules
1 year ago
001
Detects tampering of RDP Terminal Service/Server sensitive settings. Such as allowing unauthorized users access to a system via the 'fAllowUnsolicited' or enabling RDP via 'fDenyTSConnections', etc.
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Google SecOps@GoogleSecOps
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Google SecOps Detection Rules
1 year ago
001
Detects when an adversary uses the reg.exe utility to add or modify new keys or subkeys
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Google SecOps@GoogleSecOps
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Google SecOps Detection Rules
1 year ago
001
The analytic detects cloud API calls executed by user roles that have not previously run these commands. It leverages the Change data model in Splunk to identify commands executed by users with the user_type of AssumedRole and a status of success. This activity is significant because new commands from different user roles can indicate potential malicious activity or unauthorized actions. If confirmed malicious, this behavior could lead to unauthorized access, data breaches, or other damaging outcomes by exploiting new or unmonitored commands within the cloud environment.
Splunk Security@SplunkSecurity
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Splunk Security Content
1 year ago
1067
The following analytic detects the suspicious sysmon service stop. This behavior is critical for a SOC to monitor because it may indicate attempts to gain unauthorized access or maintain control over a system. Such actions could be signs of malicious activity. If confirmed, this could lead to serious consequences, including a compromised system, unauthorized access to sensitive data, or even a wider breach affecting the entire network. Detecting and responding to these signs early is essential to prevent potential security incidents.
Splunk Security@SplunkSecurity
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Splunk Security Content
1 year ago
0036
Detects the creation of specific log files associated with TeamViewer remote sessions. This can indicate the use of TeamViewer for remote access, which might be legitimate or malicious depending on the context.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
1 year ago
0024
Detects potentially suspicious child processes launched via the ScreenConnect client service. This rule specifically looks for common Windows utilities being executed from a temporary ScreenConnect directory, which can indicate post-exploitation activity by an adversary using the remote access tool.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
1 year ago
0024
The analytic detects modifications to the Windows RunMRU registry key, which stores a history of commands executed through the Run dialog box (Windows+R). It leverages Endpoint Detection and Response (EDR) telemetry to monitor registry events targeting this key. This activity is significant as malware often uses the Run dialog to execute malicious commands while attempting to appear legitimate. If confirmed malicious, this could indicate an attacker using indirect command execution techniques for defense evasion or persistence. The detection excludes MRUList value changes to focus on actual command entries.
Splunk Security@SplunkSecurity
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Splunk Security Content
1 year ago
0057
Detects AnyDesk writing binary files to disk other than "gcapi.dll". According to RedCanary research, it is highly abnormal for AnyDesk to write executable files to disk besides gcapi.dll, which is a legitimate DLL that is part of the Google Chrome web browser used to interact with the Google Cloud API.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
1 year ago
0019
This rule detects the creation of 'TeamViewer_Desktop.exe' on a Windows system. This file is typically created during the installation of TeamViewer, a legitimate remote access tool. Adversaries often abuse such tools for command and control, making its installation a potential indicator of compromise.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
1 year ago
0019
The analytic detects the loading of known vulnerable Windows drivers, which may indicate potential persistence or privilege escalation attempts. It leverages Sysmon EventCode 6 to identify driver loading events and cross-references them with a list of vulnerable drivers. This activity is significant as attackers often exploit vulnerable drivers to gain elevated privileges or maintain persistence on a system. If confirmed malicious, this could allow attackers to execute arbitrary code with high privileges, leading to further system compromise and potential data exfiltration.
Splunk Security@SplunkSecurity
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Splunk Security Content
1 year ago
0040
Detects modification of autostart extensibility point (ASEP) in registry
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Google SecOps@GoogleSecOps
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Google SecOps Detection Rules
1 year ago
000
Detects modification of autostart extensibility point (ASEP) in registry
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Google SecOps@GoogleSecOps
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Google SecOps Detection Rules
1 year ago
000
Detects registry modifications that change features of internal Windows tools (malware like Agent Tesla uses this technique)
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Google SecOps@GoogleSecOps
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Google SecOps Detection Rules
1 year ago
000
Detects suspicious new RUN key element pointing to an executable in a suspicious folder
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Google SecOps@GoogleSecOps
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Google SecOps Detection Rules
1 year ago
000
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