Detections

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

397 detections

KQL Query from file: MDE: Detecting Quick Assist Usage
avatar
Steven Lim@KQLWizard
avatar
SlimKQL
1 year ago
6098
KQL Query from file: RMM Hunting with Sentinel TI
avatar
Steven Lim@KQLWizard
avatar
SlimKQL
1 year ago
5077
Detects potential execution of MeshAgent which is a tool used for remote access.
Historical data shows that threat actors rename MeshAgent binary to evade detection.
Matching command lines with the '--meshServiceName' argument can indicate that the MeshAgent is being used for remote access.
Yamato Security Hayabusa@YamatoSecurityHayabusa
avatar
Yamato Security Hayabusa Rules
1 year ago
0016
Detects the execution of a renamed instance of the Remote Monitoring and Management (RMM) tool, MeshAgent.
RMM tools such as MeshAgent are commonly utilized by IT administrators for legitimate remote support and system management.
However, malicious actors may exploit these tools by renaming them to bypass detection mechanisms, enabling unauthorized access and control over compromised systems.
Yamato Security Hayabusa@YamatoSecurityHayabusa
avatar
Yamato Security Hayabusa Rules
1 year ago
0113
Detects the use of MeshAgent to execute commands on the target host, particularly when threat actors might abuse it to execute commands directly.
MeshAgent can execute commands on the target host by leveraging win-console to obscure their activities and win-dispatcher to run malicious code through IPC with child processes.
Yamato Security Hayabusa@YamatoSecurityHayabusa
avatar
Yamato Security Hayabusa Rules
1 year ago
0010
Detects the execution of a renamed instance of the Remote Monitoring and Management (RMM) tool, MeshAgent.
RMM tools such as MeshAgent are commonly utilized by IT administrators for legitimate remote support and system management.
However, malicious actors may exploit these tools by renaming them to bypass detection mechanisms, enabling unauthorized access and control over compromised systems.
Yamato Security Hayabusa@YamatoSecurityHayabusa
avatar
Yamato Security Hayabusa Rules
1 year ago
006
Detects potential execution of MeshAgent which is a tool used for remote access.
Historical data shows that threat actors rename MeshAgent binary to evade detection.
Matching command lines with the '--meshServiceName' argument can indicate that the MeshAgent is being used for remote access.
Yamato Security Hayabusa@YamatoSecurityHayabusa
avatar
Yamato Security Hayabusa Rules
1 year ago
005
Detects the use of MeshAgent to execute commands on the target host, particularly when threat actors might abuse it to execute commands directly.
MeshAgent can execute commands on the target host by leveraging win-console to obscure their activities and win-dispatcher to run malicious code through IPC with child processes.
Yamato Security Hayabusa@YamatoSecurityHayabusa
avatar
Yamato Security Hayabusa Rules
1 year ago
004
This rule detects the execution of SimpleHelp remote access software. SimpleHelp is a legitimate desktop support and remote access tool that adversaries may abuse to establish command and control (C2) channels. The rule specifically looks for process creation events where the image path contains "JWrapper-Remote Access" or "JWrapper-Remote Support" and the executable name is "SimpleService.exe". This pattern indicates the execution of the SimpleHelp service component.
avatar
SigmaHQ Detections@sigmaHQ
avatar
SigmaHQ
1 year ago
9022,248
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.
avatar
SigmaHQ Detections@sigmaHQ
avatar
SigmaHQ
1 year ago
1038
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.
avatar
SigmaHQ Detections@sigmaHQ
avatar
SigmaHQ
1 year ago
2038
An adversary may use legitimate desktop support and remote access software, such as Team Viewer, Go2Assist, LogMein, AmmyyAdmin, etc, to establish an interactive command and control channel to target systems within networks.
These services are commonly used as legitimate technical support software, and may be allowed by application control within a target environment.
Remote access tools like VNC, Ammyy, and Teamviewer are used frequently when compared with other legitimate software commonly used by adversaries. (Citation: Symantec Living off the Land)
Yamato Security Hayabusa@YamatoSecurityHayabusa
avatar
Yamato Security Hayabusa Rules
1 year ago
0127
Detects the execution of a renamed instance of the Remote Monitoring and Management (RMM) tool, MeshAgent. Malicious actors often rename legitimate tools like MeshAgent to bypass detection mechanisms, enabling unauthorized access and control over compromised systems.
avatar
SigmaHQ Detections@sigmaHQ
avatar
SigmaHQ
1 year ago
1019
Detects the execution of Microsoft Quick Assist tool "QuickAssist.exe". This utility can be used by attackers to gain remote access.
Yamato Security Hayabusa@YamatoSecurityHayabusa
avatar
Yamato Security Hayabusa Rules
1 year ago
0020
Detects a DNS query initiated from a "wscript" process for domains matching a specific pattern that was seen being used by SocGholish for its Command and Control traffic
Yamato Security Hayabusa@YamatoSecurityHayabusa
avatar
Yamato Security Hayabusa Rules
1 year ago
0017
Detects the execution of Microsoft Quick Assist tool "QuickAssist.exe". This utility can be used by attackers to gain remote access.
Yamato Security Hayabusa@YamatoSecurityHayabusa
avatar
Yamato Security Hayabusa Rules
1 year ago
0017
Detects potential execution of MeshAgent, a remote access tool, by looking for the '--meshServiceName' argument in the command line. Threat actors often rename the MeshAgent binary to evade detection, making this command-line argument a more reliable indicator of its use for remote access.
avatar
SigmaHQ Detections@sigmaHQ
avatar
SigmaHQ
1 year ago
0015
An adversary may use legitimate desktop support and remote access software, such as Team Viewer, Go2Assist, LogMein, AmmyyAdmin, etc, to establish an interactive command and control channel to target systems within networks.
These services are commonly used as legitimate technical support software, and may be allowed by application control within a target environment.
Remote access tools like VNC, Ammyy, and Teamviewer are used frequently when compared with other legitimate software commonly used by adversaries. (Citation: Symantec Living off the Land)
Yamato Security Hayabusa@YamatoSecurityHayabusa
avatar
Yamato Security Hayabusa Rules
1 year ago
0015
An adversary may use legitimate desktop support and remote access software, such as Team Viewer, Go2Assist, LogMein, AmmyyAdmin, etc, to establish an interactive command and control channel to target systems within networks.
These services are commonly used as legitimate technical support software, and may be allowed by application control within a target environment.
Remote access tools like VNC, Ammyy, and Teamviewer are used frequently when compared with other legitimate software commonly used by adversaries. (Citation: Symantec Living off the Land)
Yamato Security Hayabusa@YamatoSecurityHayabusa
avatar
Yamato Security Hayabusa Rules
1 year ago
0014
An adversary may use legitimate desktop support and remote access software, such as Team Viewer, Go2Assist, LogMein, AmmyyAdmin, etc, to establish an interactive command and control channel to target systems within networks.
These services are commonly used as legitimate technical support software, and may be allowed by application control within a target environment.
Remote access tools like VNC, Ammyy, and Teamviewer are used frequently when compared with other legitimate software commonly used by adversaries. (Citation: Symantec Living off the Land)
Yamato Security Hayabusa@YamatoSecurityHayabusa
avatar
Yamato Security Hayabusa Rules
1 year ago
0013
Detects the usage of tsclient share to place a backdoor on the RDP source machine's startup folder
Yamato Security Hayabusa@YamatoSecurityHayabusa
avatar
Yamato Security Hayabusa Rules
1 year ago
1012
Page 9 of 19