Detections

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

1,592 detections

This detection approach correlates a user accessing an email with image/document attachments and a risky sign-in attempt from non-trusted devices.
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
0033
This query helps hunt for emails with malicious URLs based on external IOC source
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
0032
This query was originally published on Twitter, by @MsftSecIntel.
The query helps detect emails associated with a campaign that has used open redirector URLs. The campaign's URLs begin with the distinct pattern, hxxps://t. Attackers use URL redirection to manipulate users into visiting a malicious website or to evade detection.
Reference - https://twitter.com/MsftSecIntel
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
1031
This query helps hunting for Emails containing links to IP addresses
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
1031
This query visualises total emails with Malware detections summarizing the data by ThreatNames of the malware detected.
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
1031
This query visualises total emails with Phish detections over time summarizing the data daily by various Phish Detection technologies/controls
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
2031
This query helps reviewing incoming email messages where the Display Name of the sender contains own or other partner company/brand name
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
0030
This query shows information about high confidence phish email that has been released from the Quarantine.
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
0030
Detects suspicious child processes of the Microsoft OneNote application. This may indicate an attempt to execute malicious embedded objects from a .one file.
Yamato Security Hayabusa@YamatoSecurityHayabusa
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Yamato Security Hayabusa Rules
1 year ago
005
This query helps reviewing emails accessed by end users using cloud app events data
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
0029
Detects a suspicious child process of a Microsoft HTML Help (HH.exe)
Yamato Security Hayabusa@YamatoSecurityHayabusa
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Yamato Security Hayabusa Rules
1 year ago
005
This query provides insights into AIR investigation actions in Microsoft Defender for Office 365.
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
0028
This query visualises total emails with Malware detections over time summarizing the data daily by Delivery Location.
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
1028
This query helps to find threats using display name impersonation for users not already protected with User Impersonation
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
0028
Original Sigma Rule: https://github.com/Neo23x0/sigma/blob/master/rules/apt/apt_judgement_panda_gtr19.yml.
Questions via Twitter: @janvonkirchheim.
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
0027
This query checks devices for the presence of files that have been sent by a known malicious sender. To use this query, replace the email address with the address of the known malicious sender.
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
4027
This query visualises total emails with Malware detections over time summarizing the data daily.
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
0026
Hunting for credential phishing using the "Referral" infrastructure using Defender for Office 365 data
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
0026
'Alerts in links that have been shared across multiple Zoom chat channels by the same user in a short space if time.
Adjust the threshold figure to change the number of channels a message needs to be posted in before an alert is raised.'
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
0026
This query helps reviewing sender IPs sending malicious email of type Malware or Phish
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
1025
Provides a summary of total number of detections
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
1025
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