Havex_NetScan_Malware

YARA detection rule by M4r14ch1 · GPL-2.0

This rule will search for known indicators of a Havex Network Scan module infection. This module looks for hosts listening on known ICS-related ports to identify OPC or ICS systems and the file created when the scanning data is written.

rule Havex_NetScan_Malware {
meta:
        description = "This rule will search for known indicators of a Havex Network Scan module infection. This module looks for hosts listening on known ICS-related ports to identify OPC or ICS systems and the file created when the scanning data is written."
        author = "M4r14ch1"
        reference = "https://github.com/M4r14ch1/Havex-Network-Scanner-Modules"
        date = "2015/12/21"
        strings:
                $s0 = "~tracedscn.yls" wide nocase                 $s1 = { 2B E2 ?? }                      $s2 = { 30 71 ?? }                     
            
        condition:
                $s0 and ($s1 or $s2 )
}

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

a3322840-6fee-4422-902d-7a10a8860a90

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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

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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.

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

[[ currentRule.title ]]

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