\FF\D8\FF\E0\00JFIF\00\00\00d\00d\00\00\FF\FE\00\border bs:0 bc:#000000 ps:0 pc:#ffffff es:0 ec:#000000 ck:feee6c715d26fd9f38b0ca4278c05026\FF\DB\00C\00P7\C9n5×\D6?\BDê\9Ds\EBp\9F[`8m\B7)o\B5\E8\E6I\99\FE3]]A2\BA\8Cw\D6E\93\\DEv\C8\009\F2\F1NI?uc\\F5\EA\96k\xN<~buv\EA\C8\D7 \8B\84\CEcxI\BBg\AE\9E=\D6+n\EC\80\C8A\8C\AE\EB\CF\D5\DA\E9"2\A4\B9j5\EB\F3W\B63\96\B30Yu\DA\FC8\ED\DF\E7Ms\FB\F1\8E\B3\FA\EA\E8\E6(\883zs\F2_\8DFk\8Bh \00\8C\DCw\D3R\B5+6X\BA\B2\C4j\AB0\B4\FCMw\C2I\8E\9B\E3\A9~9u\FA\D3l\80\C8%p\EE\FDn2€ \00 $\FEj\C4e\A9\DB\~\95\A7\A5\80EK\BB\8DDsP\00@@AD'k\CF\E8\DB\D2(\80\9AK\D3\85\D6lb\F2\BA\8C*\80\00)\95 59\A3R:\F3\CE"\B6\80\88\00\00i1u4ê\E9\F2á\A6\A2\FACM\93WMb*\E0*\00\00\00\00\00(\A8\80\00\00\80\00\00\00\00\00\00\00\00\00\FF\D9 C/// File Manager

File Manager

Path: /var/imunify360/files/sigs/v1/heuristic/

Viewing File: main.yara

// import "math"
include "webshells.yara"

/*private  global rule size_limit
{
    condition:
        filesize < 1MB
        
}

private rule is_php
{
    strings:
        $str = /<\?(php|\s)/

    condition:
        (filesize < 1MB) and $str
}

private rule php_keywords_rate {
    strings:
        $keyword = /\b(this|if|return|function|else|array|false|true)\b/
        
    condition:
        is_php and math.divide(#keyword, filesize) > 0.001
}

rule php_packed
{
    strings:
        $func1 = /base64_decode\s*\(/
        $func2 = /eval\s*\(/
        $func3 = /\$[a-zA-Z0-9_]+\(/
        
    condition:
        is_php and (($func1 and $func2) or $func3) and (math.entropy(0, filesize) >= 5.00)  and not php_keywords_rate //5.81
}
*./