Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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KQL Query from file: Discord Invite Hijacking Detection
KQL Query from file: Detect CVE-2025-27607 (CVSS 8.8)
Detects the execution of the "chflags" utility with the "hidden" flag on macOS. When this flag is set on a file or directory, it becomes invisible to default file listing commands and graphical file browsers, a common technique used by adversaries for defense evasion.
Detects the execution of the `hdiutil` utility on macOS to mount disk images. This activity can be associated with malware delivery, as adversaries often use disk images (.dmg files) to distribute malicious payloads. Monitoring this utility can help identify suspicious attempts to introduce or execute malware on a system.
Detects the execution of the hdiutil utility with the 'create' argument, indicating the creation of a disk image on macOS. This activity can be associated with data staging or exfiltration techniques.
Detects potential execution of MeshAgent, a remote access tool, on macOS systems. The rule specifically looks for the '--meshServiceName' argument in the command line, which is indicative of MeshAgent usage. Threat actors often rename the MeshAgent binary to evade detection, making command-line arguments a more reliable indicator.
Detects the execution of a renamed instance of the Remote Monitoring and Management (RMM) tool, MeshAgent. This rule specifically looks for process creation events on macOS where the command line contains '--meshServiceName' or the original filename contains 'meshagent', but the image path does not end with the legitimate '/meshagent' or '/meshagent_osx64' paths. This behavior is indicative of an adversary attempting to bypass detection by masquerading the RMM tool.
Process executed from binary hidden in Base64 encoded file. Encoding malicious software is a.
Technique to obfuscate files from detection.
The first and second ProcessCommandLine component is looking for Python decoding base64.
The third ProcesssCommandLine component is looking for the Bash/sh commandline base64 decoding tool.
The fourth one is looking for Ruby decoding base64.
Technique to obfuscate files from detection.
The first and second ProcessCommandLine component is looking for Python decoding base64.
The third ProcesssCommandLine component is looking for the Bash/sh commandline base64 decoding tool.
The fourth one is looking for Ruby decoding base64.
Microsoft has observed attackers exploiting vulnerabilities associated with Log4J.
Detects the execution of the hdiutil utility in order to create a disk image.
This query was originally published in the threat analytics report, EvilQuest signals the rise of Mac ransomware.
As of the time of this writing (October 2020), ransomware designed to target macOS is relatively rare. EvilQuest is one of the few examples of this kind of malware on the platform.
The query below can help locate a reverse shell established by an attacker. The command the query searches for is associated with, but not definitely indicative of, EvilQuest infections.
Other queries related to EvilQuest ransomware can be found under the See also section below.
As of the time of this writing (October 2020), ransomware designed to target macOS is relatively rare. EvilQuest is one of the few examples of this kind of malware on the platform.
The query below can help locate a reverse shell established by an attacker. The command the query searches for is associated with, but not definitely indicative of, EvilQuest infections.
Other queries related to EvilQuest ransomware can be found under the See also section below.
This query will provide a report of many of the best practice configurations for Defender ATP deployment. Special Thanks to Gilad Mittelman for the initial inspiration and concept.
Any tests which are reporting "BAD" as a result imply that the associated capability is not configured per best practice recommendation.
Any tests which are reporting "BAD" as a result imply that the associated capability is not configured per best practice recommendation.
'Any Alerts that fired related to a given File during the range of +6h and -3d'
This query was originally published in the threat analytics report, EvilQuest signals the rise of Mac ransomware.
As of the time of this writing (October 2020), ransomware designed to target macOS is relatively rare. EvilQuest is one of the few examples of this kind of malware on the platform.
The query below can help locate an attempt to run Python in service of malicious activity by a remote operator. The command the query searches for is associated with, but not definitely indicative of, EvilQuest infections.
Other queries related to EvilQuest ransomware can be found under the See also section below.
As of the time of this writing (October 2020), ransomware designed to target macOS is relatively rare. EvilQuest is one of the few examples of this kind of malware on the platform.
The query below can help locate an attempt to run Python in service of malicious activity by a remote operator. The command the query searches for is associated with, but not definitely indicative of, EvilQuest infections.
Other queries related to EvilQuest ransomware can be found under the See also section below.
Remote Monitoring and Management (RMM) programs are IT to manage remote endpoints. Attackers have begun to abuse these programs to persist or provide C2 channels.
https://github.com/jischell-msft/RemoteManagementMonitoringTools
https://github.com/jischell-msft/RemoteManagementMonitoringTools
Backdoor processes associated with OceanLotus Mac Malware Backdoor.
References:.
Https://blog.trendmicro.com/trendlabs-security-intelligence/new-macos-backdoor-linked-to-oceanlotus-found/.
OS platforms: Macintosh.
References:.
Https://blog.trendmicro.com/trendlabs-security-intelligence/new-macos-backdoor-linked-to-oceanlotus-found/.
OS platforms: Macintosh.
This query was originally published in the threat analytics report, EvilQuest signals the rise of Mac ransomware.
As of the time of this writing (October 2020), ransomware designed to target macOS is relatively rare. EvilQuest is one of the few examples of this kind of malware on the platform.
The query below can detect events associated with the launch of the EvilQuest executable, questd, from the shell.
Other queries related to EvilQuest ransomware can be found under the See also section below.
As of the time of this writing (October 2020), ransomware designed to target macOS is relatively rare. EvilQuest is one of the few examples of this kind of malware on the platform.
The query below can detect events associated with the launch of the EvilQuest executable, questd, from the shell.
Other queries related to EvilQuest ransomware can be found under the See also section below.
'Any Alerts that fired on any host with this same process in the range of +-1d'
Backdoor processes associated with OceanLotus Mac malware backdoor dropper.
References:.
Https://blog.trendmicro.com/trendlabs-security-intelligence/new-macos-backdoor-linked-to-oceanlotus-found/.
OS Platforms: Macintosh.
References:.
Https://blog.trendmicro.com/trendlabs-security-intelligence/new-macos-backdoor-linked-to-oceanlotus-found/.
OS Platforms: Macintosh.
Detects the execution of the hdiutil utility in order to mount disk images.
This query was originally published in the threat analytics report, Python abuse on macOS
The Python programming language comes bundled with macOS. In threat intelligence gathered from macOS endpoints, we have observed numerous attacks run with EmPyre, a Python-based post-exploitation framework similar to PowerShell Empire for Windows.
The following query checks for Microsoft Office documents that run Python scripts.
Reference - https://www.powershellempire.com/
The Python programming language comes bundled with macOS. In threat intelligence gathered from macOS endpoints, we have observed numerous attacks run with EmPyre, a Python-based post-exploitation framework similar to PowerShell Empire for Windows.
The following query checks for Microsoft Office documents that run Python scripts.
Reference - https://www.powershellempire.com/
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