YARA false positive; popular, reputable project; lacks further evidence of malicious behavior.
No verification record available.
The evidence suggests a false positive. The YARA rule 'sys_net_recon_exfil' matched a file (History.md) within the express package. YARA rules are known to be noisy and produce false positives. The fact that the match occurred in a file like History.md, which is unlikely to contain executable code or network-related functionality, strongly suggests a false positive. The express package is a widely used and well-established Node.js web framework with a substantial and reputable project on GitHub (66652 stars, 18037 forks). The high number of stars and forks indicates a large and active community, making a malicious takeover less likely. Without further evidence from a more reliable source such as LLM-based file analysis, we cannot conclude that the package is malicious. The YARA result alone is insufficient to label this package as malware.