Time Machine Backup Disabled Via Tmutil - MacOS
A Sigma rule for process creation on macOS, by Pratinav Chandra.
medium 1 ATT&CK technique 1 program it names 1 everyday example trips it
What it looks for
detection:
selection_cmd:
CommandLine|contains: 'disable'
selection_img:
- Image|endswith: '/tmutil'
- CommandLine|contains: 'tmutil'
condition: all of selection_*
The rule’s detection, its selections and fields in order of name. The whole rule, with its references and false positives, is on SigmaHQ, by Pratinav Chandra, under the Detection Rule License 1.1. CmdID evaluates it on a command line alone: a test on what a command line cannot show, such as the parent process or the user, is not met.
Command lines that trip it
Programs and files it names
ATT&CK
T1490Inhibit System Recovery