win_zenar_auto

YARA detection rule by Felix Bilstein - yara-signator at cocacoding dot com

Detects win.zenar.

rule win_zenar_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.zenar."
        info = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.6.0"
        signator_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.zenar"
        malpedia_rule_date = "20260916"
        malpedia_hash = "53a643781c18e08f4a50949af60172d837a0b6f6"
        malpedia_version = "20260917"
        malpedia_license = "CC BY-SA 4.0"
        malpedia_sharing = "TLP:WHITE"

    


    strings:
        $sequence_0 = { c785bcf7ffff0f000000 c685a8f7ffff00 e8???????? c645fc06 8d8d90f7ffff 8bbda4f7ffff 83ff10 }
                                                                                                
        $sequence_1 = { e8???????? eb52 8d4e4c e8???????? 8945d8 8d4dc8 8d45d8 }
                                                                                                
        $sequence_2 = { 8365fc00 8b049d98ae4300 8b4de0 f644012801 7515 e8???????? c70009000000 }
                                                                                                
        $sequence_3 = { 8b9dd4f6ffff 660f1f440000 660fbe07 0fb7f0 3bca 7326 }
                                                                                    
        $sequence_4 = { ff15???????? ff15???????? ffb5f0fdffff ffd7 ffb5f4fdffff eb01 50 }
                                                                                                
        $sequence_5 = { 2bc2 8b55e4 8bcb d1f8 2bca 3bc1 7734 }
                                                                                                
        $sequence_6 = { 83c001 25fe030000 f20f592c85e0154300 f20f591485e0154300 660f5834c5f01d4300 660f54c5 f20f5ce8 }
                                                                                                
        $sequence_7 = { e8???????? 8b404c 83b8a800000000 750e 8b04bd98ae4300 807c302900 741d }
                                                                                                
        $sequence_8 = { ff7510 8365fc00 8bc8 ff750c ff7508 56 }
                                                                                    
        $sequence_9 = { 7418 83f83f 7413 8d047e 50 e8???????? }
                                                                                    
    condition:
        7 of them and filesize < 519168
}

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

b906b4a3-16c6-42e0-8985-bc1d2d380ef8

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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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