bookworm_payload_by_modules_names

YARA detection rule by @h3x2b <tracker _AT h3x.eu>

Detect ushata payload by usage of more than 2 modules

rule bookworm_payload_by_modules_names : malware
{
    meta:
         description = "Detect ushata payload by usage of more than 2 modules"
         author = "@h3x2b <tracker _AT h3x.eu>"

    strings:
        $mod_01 = "Leader.dll"
        $mod_02 = "Coder.dll"
        $mod_03 = "Digest.dll"
        $mod_04 = "AES.dll"
        $mod_05 = "KBLogger.dll"
        $mod_06 = "Network.dll"
        $mod_07 = "Resolver.dll"
        $mod_08 = "HTTP.dll"
        $mod_09 = "WinINetwork.dll"
        $mod_10 = "ushata.dll"
        $mod_11 = "ProgramStartup"

    condition:
        3 of them

}

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

b0b24a2f-32d9-45aa-a19c-5170ebad4710

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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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