You know you scan files with Yara anyways, why not give your findings back to the community?
This script can scan a folder of samples against a provided Yara ruleset and optionally submit the matching Yara rule names to each files respective VirusTotal report as a comment.
Important: Use this script only with high-confidence Yara rules to avoid spamming VT with misleading comments
This code hasn't yet been tested in any real way. I would not recommend using it :)
$ python yara_vt.py --help (master)
usage: yara_vt.py [-h] -r RULES -s SAMPLES [-k KEY] -c
Scan directory with Yara and submit matches to VirusTotal samples as comments
optional arguments:
-h, --help show this help message and exit
Yara:
-r RULES, --rules RULES
yara rules directory
-s SAMPLES, ---samples SAMPLES
samples directory to scan
VirusTotal:
-k KEY, --key KEY virustotal API key
-c, --comment submit virustotal comments