Identifier / Programs / Linux and Unix
bzip2
A block-sorting file compressor. tldr-pages
GTFOBins file-read 1 documented command
How bzip2 is abused
file-read
-c-dEach abuse is GTFOBins's category and the options and words it uses; the full write-up is on GTFOBins's page for bzip2.
1 documented command
file-read unprivileged, with sudo, as SUID
bzip2 -c /path/to/input-file | bzip2 -dThe 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 bzip2. The identifier reads the line that runs bzip2.
Everyday use
Compress a file
bzip2 path/to/file_to_compressIdentifyDecompress a file
bzip2 --decompress path/to/compressed_file.bz2IdentifyDecompress a file to stdout
bzip2 [-dc|--decompress --stdout] path/to/compressed_file.bz2IdentifyNone of the 3 examples the identifier reads matches GTFOBins abuse or trips a Sigma process-creation rule.