Azure Sentinel

@AzureSentinel
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1,223 detections

Microsoft has observed attackers exploiting vulnerabilities associated with Log4J.
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
3060
This query shows authentication methods being added and devices registered around the time of a high risk sign in which could indicate an attempt to establish persistence on a compromised account. The threshold can be changed to a wider timeframe if needed.
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
8062
Search for the CVEs that should be prioritized and resolved to reduce the success of the FireEye Red Team tools compromised by the Nobelium activity group.
See red_team_tool_countermeasures on the official FireEye repo.
References:
https://github.com/fireeye/red_team_tool_countermeasures/blob/master/CVEs_red_team_tools.md
https://github.com/fireeye
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
1060
'This query look for users starting an Azure CloudShell session and summarizes the Azure Activity from that
user account during that timeframe (by default 1 hour). This can be used to help identify abuse of the CloudShell
to modify Azure resources.'
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
2062
Looks for suspicious base64 encoded registry keys being created.
Author: Jouni Mikkola
References:
https://threathunt.blog/registry-hunts/
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
3161
'Identifies when an RDP connection is made to multiple systems and above the normal connection count for the previous 7 days.
Connections from the same system with the same account within the same day.
RDP connections are indicated by the EventID 4624 with LogonType = 10'
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
4061
'Matches domain name IOCs related to Forest Blizzard group activity published July 2019 with CommonSecurityLog, DnsEvents and VMConnection dataTypes.
References: https://blogs.microsoft.com/on-the-issues/2019/07/17/new-cyberthreats-require-new-ways-to-protect-democracy/.'
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
1060
Check all created files.
That does not have extension ps1, bat or cmd to avoid IT Pro scripts.
That are not copied to C:\ to detect all file share, external drive, data partition that are not allowed, etc.
This could help to detect malicious insider/user that has unencrypted data partition and that are using it to exfiltrate data even while removable devices & cloud storage is blocked.
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
3058
'This query looks at Account Logon events found through Windows Event Id's as well as SigninLogs to discover
login attempts by accounts that have expired.'
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
5059
'This rule identifies a web request with a user agent header known to belong to a hacking tool. This indicates a hacking tool is used on the host.<br>You can add custom hacking tool indicating User-Agent headers using a watchlist, for more information refer to the [UnusualUserAgents Watchlist](https://aka.ms/ASimUnusualUserAgentsWatchlist).
This analytic rule uses [ASIM](https://aka.ms/AboutASIM) and supports any built-in or custom source that supports the ASIM WebSession schema (ASIM WebSession Schema)'
Azure Sentinel@AzureSentinel
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AzureSentinel
1 year ago
1059
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