Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
228 detections
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This query visualises the daily amount of emails that had a post delivery action from zero-hour auto purge, summarizing by phish,spam or malware detection action
This query visualises the amount of emails that had a post delivery action, summarizing the data daily by the final location as a result of the action
This query visualises emails released from quarantine and summarizing the result by the original filter verdict
This query helps reviewing count of phish detections done by spoof detection methods
This query visualises total emails with Malware detections over time summarizing the data daily by Malware detection technologies/controls used for detecting unknown-unique malware.
In this query, we are looking for emails containing malware accessed on a unmanaged device
'Often times after the initial compromise the attackers create inbox rules to delete emails that contain certain keywords.
This is done so as to limit ability to warn compromised users that they've been compromised. Below is a sample query that tries to detect this.
Reference: https://www.reddit.com/r/sysadmin/comments/7kyp0a/recent_phishing_attempts_my_experience_and_what/'
This is done so as to limit ability to warn compromised users that they've been compromised. Below is a sample query that tries to detect this.
Reference: https://www.reddit.com/r/sysadmin/comments/7kyp0a/recent_phishing_attempts_my_experience_and_what/'
Graph of MDO detections trended over time
This query looks for users accessing multiple other users' mailboxes, or accessing multiple folders in another user's mailbox.
This query is inspired by an Azure Sentinel detection.
Reference - https://github.com/Azure/Azure-Sentinel/blob/master/Hunting%20Queries/OfficeActivity/AnomolousUserAccessingOtherUsersMailbox.yaml
This query is inspired by an Azure Sentinel detection.
Reference - https://github.com/Azure/Azure-Sentinel/blob/master/Hunting%20Queries/OfficeActivity/AnomolousUserAccessingOtherUsersMailbox.yaml
This query helps in reviewing malicious emails allowed due to admin overrides
Identifies anomalous increases in Exchange mail items accessed operations.
The query leverages KQL built-in anomaly detection algorithms to find large deviations from baseline patterns.
Sudden increases in execution frequency of sensitive actions should be further investigated for malicious activity.
Manually change scorethreshold from 1.5 to 3 or higher to reduce the noise based on outliers flagged from the query criteria.
Read more about MailItemsAccessed- https://docs.microsoft.com/microsoft-365/compliance/advanced-audit?view=o365-worldwide#mailitemsaccessed
Query insprired by Azure Sentinel detection https://github.com/Azure/Azure-Sentinel/blob/master/Detections/OfficeActivity/MailItemsAccessedTimeSeries.yaml
The query leverages KQL built-in anomaly detection algorithms to find large deviations from baseline patterns.
Sudden increases in execution frequency of sensitive actions should be further investigated for malicious activity.
Manually change scorethreshold from 1.5 to 3 or higher to reduce the noise based on outliers flagged from the query criteria.
Read more about MailItemsAccessed- https://docs.microsoft.com/microsoft-365/compliance/advanced-audit?view=o365-worldwide#mailitemsaccessed
Query insprired by Azure Sentinel detection https://github.com/Azure/Azure-Sentinel/blob/master/Detections/OfficeActivity/MailItemsAccessedTimeSeries.yaml
This query visualises total emails with Phish detections over time summarizing the data daily by Phish detection technologies/controls used for detecting unknown-unique phish
This query helps reviewing URL click count by ClickAction
This query finds the 10 latest logons performed by email recipients within 30 minutes after they received known malicious emails. You can use this query to check whether the accounts of the email recipients have been compromised.
This query visualises total emails with Malware detections summarizing the data by ThreatNames of the malware detected.
This query visualises total emails with Malware detections over time summarizing the data daily by Delivery Location.
This query visualises total emails with Malware detections over time summarizing the data daily.
This query helps reviewing sender IPs sending malicious email of type Malware or Phish
Provides a summary of total number of detections
Snip3 is a family of related remote access trojans. Although the malware in this family contain numerous small variations, they all exhibit similar behaviors and techniques.
The following query looks for keywords observed in emails involved in a Snip3-associated campaign in April and May of 2021. The emails often have an aviation theme, and the campaign primarily targets organizations involved in travel or aviation. Note that keywords may change overtime. These emails were used to send malicious legitimate hosting provider links that redirected to VBS documents hosting loaders. The loaders initiate RevengeRAT or AsyncRAT downloads that eventually establish persistence on targets and exfiltrate data.
The following query looks for keywords observed in emails involved in a Snip3-associated campaign in April and May of 2021. The emails often have an aviation theme, and the campaign primarily targets organizations involved in travel or aviation. Note that keywords may change overtime. These emails were used to send malicious legitimate hosting provider links that redirected to VBS documents hosting loaders. The loaders initiate RevengeRAT or AsyncRAT downloads that eventually establish persistence on targets and exfiltrate data.
This query helps reviewing malicious email detections by detection methods
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