apt_c16_win64_dropper

YARA detection rule by @dragonthreatlab · GPL-2.0

APT malware used to drop PcClient RAT

rule apt_c16_win64_dropper
{

    meta:
        author = "@dragonthreatlab"
        date = "2015/01/11"
        description = "APT malware used to drop PcClient RAT"
        reference = "http://blog.dragonthreatlabs.com/2015/01/dtl-12012015-01-hong-kong-swc-attack.html"

    strings:
        $mz = { 4D 5A }
        $str1 = "clbcaiq.dll" ascii
        $str2 = "profapi_104" ascii
        $str3 = "\\Microsoft\\wuauclt\\wuauclt.dat" ascii
        $str4 = { 0F B6 0A 48 FF C2 80 E9 03 80 F1 03 49 FF C8 88 4A FF 75 EC }

    condition:
        $mz at 0 and all of ($str*)
}

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

6e817620-8b28-4e3e-aaa5-7fc832ae2d26

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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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