SigmaHQ Detections
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6,800 detections
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Detects when Okta identifies new activity in the Admin Console.
Detect file time attribute change to hide new or changes to existing files.
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
Hidden User Creation
Sigma
Detects creation of a hidden user account on macOS (UserID < 500) or with IsHidden option
Detects attempts to create and add an account to the admin group via "dscl"
Detects attempts to enable the root account via "dsenableroot"
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