Detections

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

1,693 detections

KQL Query from file: Sentinel Alerts & MITRE ATT&CK Analysis
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Steven Lim@KQLWizard
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SlimKQL
1 year ago
4062
KQL Query from file: DefenderXDR Weekly OSINT Indicators Scan 05052025
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Steven Lim@KQLWizard
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SlimKQL
1 year ago
8060
KQL Query
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Steven Lim@KQLWizard
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SlimKQL
1 year ago
5057
KQL Query from file: ANY.RUN Obfuscated BAT Dropper Delivers NetSupport RAT post
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Steven Lim@KQLWizard
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SlimKQL
1 year ago
3051
KQL Query
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Parth Jamodkar@Morningstar0090
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Detections.ai Community
1 year ago
82133
KQL Query from file: PowerShell Self-Pwn
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Steven Lim@KQLWizard
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SlimKQL
1 year ago
2039
KQL Query
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Steven Lim@KQLWizard
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SlimKQL
1 year ago
3037
KQL Query from file: Detecting Windows Downdate Abuse
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Steven Lim@KQLWizard
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SlimKQL
1 year ago
4032
Detects the execution of 'certutil.exe' with specific command-line flags ('urlcache' or 'verifyctl') used to download files from known file-sharing or content delivery websites. This technique is often leveraged by adversaries to transfer malicious tools or payloads into a compromised environment, bypassing traditional security controls.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
1 year ago
1017
Detects the execution of certutil with certain flags that allow the utility to download files from file-sharing websites.
Yamato Security Hayabusa@YamatoSecurityHayabusa
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Yamato Security Hayabusa Rules
1 year ago
006
Detects base64 encoded .NET reflective loading of Assembly
Yamato Security Hayabusa@YamatoSecurityHayabusa
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Yamato Security Hayabusa Rules
1 year ago
0048
Detects the execution of certutil with certain flags that allow the utility to download files from file-sharing websites.
Yamato Security Hayabusa@YamatoSecurityHayabusa
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Yamato Security Hayabusa Rules
1 year ago
004
Detects potential malicious JavaScript obfuscated using the JSFireTruck technique, characterized by the repeated use of characters like [], (), !, and +. This rule looks for the presence of multiple distinct characters from the core JSFireTruck set within web response bodies.
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Robert Fly@robertfly
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Detections.ai Community
1 year ago
1149
Detects potential malicious JavaScript obfuscated using the JSFireTruck technique, specifically looking for the combination of core JSFireTruck characters and checks for document.referrer, often used to target traffic from search engines.
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Robert Fly@robertfly
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Detections.ai Community
1 year ago
0039
Detects potential malicious JavaScript obfuscated using the JSFireTruck technique, specifically looking for the combination of core JSFireTruck characters and checks for document.referrer, often used to target traffic from search engines.
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Robert Fly@robertfly
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Detections.ai Community
1 year ago
0134
Detects a suspicious process creation as SYSTEM user (suspicious program or command line parameter)
Yamato Security Hayabusa@YamatoSecurityHayabusa
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Yamato Security Hayabusa Rules
1 year ago
1020
Detects PowerShell script blocks containing function definitions or .NET method calls commonly used by Cobalt Strike PowerShell loaders for dynamic API resolution, memory allocation, and shellcode execution. This rule is based on analysis from the provided reference.
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Aaron Mog@AaronMogS2S
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Detections.ai Community
1 year ago
5583
Detects the execution of the certutil with the "exportPFX" flag which allows the utility to export certificates.
Yamato Security Hayabusa@YamatoSecurityHayabusa
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Yamato Security Hayabusa Rules
1 year ago
0016
'Malware authors will sometimes hardcode user agent string values when writing the network communication component of their malware. Malformed user agents can be an indication of such malware.'
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
81122
Detects the use of rcedit to potentially alter executable PE metadata properties, which could conceal efforts to rename system utilities for defense evasion.
Yamato Security Hayabusa@YamatoSecurityHayabusa
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Yamato Security Hayabusa Rules
1 year ago
0014
Detects a suspicious process creation as SYSTEM user (suspicious program or command line parameter)
Yamato Security Hayabusa@YamatoSecurityHayabusa
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Yamato Security Hayabusa Rules
1 year ago
0013
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