SigmaHQ Detections
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6,797 detections
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Detects adversary creating hidden file or directory, by detecting directories or files with . as the first character
Detects the use of the `syslog` syscall with action code 5 (SYSLOG_ACTION_CLEAR),
(4 is SYSLOG_ACTION_READ_CLEAR and 6 is SYSLOG_ACTION_CONSOLE_OFF) which clears the kernel
ring buffer (dmesg logs). This can be used by attackers to hide traces after exploitation
or privilege escalation. A common technique is running `dmesg -c`, which triggers this syscall internally.
(4 is SYSLOG_ACTION_READ_CLEAR and 6 is SYSLOG_ACTION_CONSOLE_OFF) which clears the kernel
ring buffer (dmesg logs). This can be used by attackers to hide traces after exploitation
or privilege escalation. A common technique is running `dmesg -c`, which triggers this syscall internally.
Detects commands that try to clear or tamper with the Linux command history.
This technique is used by threat actors in order to evade defenses and execute commands without them being recorded in files such as "bash_history" or "zsh_history".
This technique is used by threat actors in order to evade defenses and execute commands without them being recorded in files such as "bash_history" or "zsh_history".
File Deletion
Sigma
Detects file deletion using "rm", "shred" or "unlink" commands which are used often by adversaries to delete files left behind by the actions of their intrusion activity
Detects the usage of utilities such as 'systemctl', 'service'...etc to stop or disable tools and services on Linux systems.
Attackers may stop or disable security tools and services to evade detection, maintain persistence, or disrupt system operations.
Attackers may stop or disable security tools and services to evade detection, maintain persistence, or disrupt system operations.
Detects deletion of local audit logs
Detects attempts to enable the guest account using the sysadminctl utility
Detects the execution of "system_profiler" with specific "Data Types" that have been seen being used by threat actors and malware. It provides system hardware and software configuration information.
This process is primarily used for system information discovery. However, "system_profiler" can also be used to determine if virtualization software is being run for defense evasion purposes.
This process is primarily used for system information discovery. However, "system_profiler" can also be used to determine if virtualization software is being run for defense evasion purposes.
Detects SSTI attempts sent via GET requests in access logs
Detects installation of a remote msi file from web.
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