Multiple 'STRRat_high' YARA rule matches indicate password stealing behavior in different files, suggesting the package is malicious.
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The package validator version 13.15.22 is flagged as malicious due to multiple matches of the STRRat_high YARA rule across different files (es/lib/normalizeEmail.js, lib/normalizeEmail.js, and validator.min.js). This rule is associated with password stealing behavior, keylogging, and targeting specific browsers and email clients. The presence of these patterns in multiple files suggests malicious intent.