Identifier / Programs / Linux and Unix
doas
Execute a command as another user. tldr-pages
GTFOBins shell 1 Sigma rule name it 2 ATT&CK techniques 1 documented command
How doas is abused
shell T1059.004 Command and Scripting Interpreter: Unix Shell
-uEach abuse is GTFOBins's category and the options and words it uses; the full write-up is on GTFOBins's page for doas.
1 documented command
shell unprivileged, with sudo
The user must be allowed to use doas.
doas -u root /bin/shTrips 1 Sigma rule: lowLinux Doas Tool Execution by Sittikorn S, Teoderick Contreras
The command the identifier reads trips a Sigma process-creation rule. This command is, with GTFOBins’ notes, from GTFOBins, at commit acd524623f9c of 2026-05-27, under the GPL-3.0, with no warranty. Changed: Markdown is shown formatted. The source is in lolbas-gtfobins-commands.json.gz, and the full entry is on GTFOBins’s page for doas. The identifier reads the line that runs doas.
What detects it
Everyday use
Run a command as root
doas commandIdentifyTrips 1 Sigma rule: lowLinux Doas Tool Execution by Sittikorn S, Teoderick Contreras
Run a command as another user
doas -u user commandIdentifyTrips 1 Sigma rule: lowLinux Doas Tool Execution by Sittikorn S, Teoderick Contreras
Launch the default shell as root
doas -sIdentifyTrips 1 Sigma rule: lowLinux Doas Tool Execution by Sittikorn S, Teoderick Contreras
Of the 3 examples the identifier reads, 3 match GTFOBins abuse or trip a Sigma process-creation rule.