WaterPamola_javascriptstealer_encode

YARA detection rule by JPCERT/CC Incident Response Group · NOASSERTION

JavaScript stealer using water pamola

rule WaterPamola_javascriptstealer_encode {
     meta:
        description = "JavaScript stealer using water pamola"
        author = "JPCERT/CC Incident Response Group"

     strings:
        $func1 = ".split('|'),0,{}));"
        $func2 = "return(c<a?'':e(parseInt(c/a)))+((c=c%a)>35?String.fromCharCode(c+29):c.toString(36))"
        $func3 = "RegExp('\\b'+e(c)+'\\b','g'),k[c]);"
        $func4 = "while(c--)if(k[c])"

     condition:
       all of them
}

[[ currentRule.title && currentRule.title.length > 60 ? currentRule.title.slice(0, 60) + '…' : currentRule.title ]]

eb2022d6-146d-4bfb-ab17-629a0d584b09

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Executable code, not a declarative rule

This submission is arbitrary [[ currentRule.format ? currentRule.format.toUpperCase() : '' ]] code, not a declarative detection rule — review it as you would any script before running it, and note that it cannot be safely aggregated or auto-executed alongside YARA/Sigma/Suricata/CRS rules.

Rejected pattern present

[[ reason ]]

What does this mean?

Format & documentation suggestions

Not a security issue — this rule is valid and was accepted as-is. These are optional fields/conventions its own format recommends, mainly affecting its quality score and how well it documents itself for other reviewers.

[[ reason ]]

What do these messages mean?

[[ currentRule.title && currentRule.title.length > 60 ? currentRule.title.slice(0, 60) + '…' : currentRule.title ]]

[[ currentRule.title ]]

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