win_lazarus_killdisk_auto

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

Detects win.lazarus_killdisk.

rule win_lazarus_killdisk_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.lazarus_killdisk."
        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.lazarus_killdisk"
        malpedia_rule_date = "20260916"
        malpedia_hash = "53a643781c18e08f4a50949af60172d837a0b6f6"
        malpedia_version = "20260917"
        malpedia_license = "CC BY-SA 4.0"
        malpedia_sharing = "TLP:WHITE"

    


    strings:
        $sequence_0 = { 8d48e0 80f93f 7706 0fbec0 83c020 }
                                                                        
        $sequence_1 = { 56 ffd7 4b 75ea 56 ff15???????? }
                                                                                    
        $sequence_2 = { 7438 8d55f0 52 68???????? }
                                                            
        $sequence_3 = { 57 8d4c242c 68???????? 51 e8???????? }
                                                                        
        $sequence_4 = { 8d4402ff 0fa4c109 6a00 894df4 8d4df4 c1e009 }
                                                                                    
        $sequence_5 = { 6a00 8d85e0fdffff 50 6800020000 }
                                                            
        $sequence_6 = { 6a00 6800000002 ffd3 8bf0 83feff }
                                                                        
        $sequence_7 = { eb08 8d5de8 e8???????? 8b85e4fdffff 40 83c610 8985e4fdffff }
                                                                                                
        $sequence_8 = { 8d75a6 8b06 8b4e08 8b560c 8945e8 }
                                                                        
        $sequence_9 = { ffd7 85c0 7424 68???????? 8d95e4feffff 52 }
                                                                                    
    condition:
        7 of them and filesize < 209920
}

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

70863465-028e-4278-a734-6813f27a3bdf

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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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