win_zxxz_auto

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

Detects win.zxxz.

rule win_zxxz_auto {

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

    


    strings:
        $sequence_0 = { 8b35???????? 83c404 68???????? 681c020000 }
                                                            
        $sequence_1 = { 8b2d???????? 85c0 741a 8d442410 50 }
                                                                        
        $sequence_2 = { 85f6 0f844a010000 8b0d???????? 8b07 }
                                                            
        $sequence_3 = { 6a00 50 e8???????? 8dbc2464020000 83c40c 4f }
                                                                                    
        $sequence_4 = { 83e103 f3a4 83f810 722b 8d4801 8bc3 81f900100000 }
                                                                                                
        $sequence_5 = { 50 6802020000 ff15???????? 85c0 0f8556010000 68???????? }
                                                                                    
        $sequence_6 = { 83c404 68fa000000 8bcf 6a00 51 e8???????? 8b0d???????? }
                                                                                                
        $sequence_7 = { bf???????? e8???????? 83c404 57 ff15???????? 8b35???????? }
                                                                                    
        $sequence_8 = { 8b45c4 8945e4 ff774c ff15???????? 83c410 8945c4 83f8ff }
                                                                                                
        $sequence_9 = { e8???????? 8b1d???????? 83c404 803d????????00 7415 }
                                                                        
        $sequence_10 = { 0f4315???????? 8b3d???????? 8b8de0feffff 2bc1 57 }
                                                                        
        $sequence_11 = { 84c0 75f6 a0???????? 68f4010000 8807 ff15???????? 6a00 }
                                                                                                
        $sequence_12 = { 83c40c 8d4c2404 51 8d542414 52 6a00 68ffff0000 }
                                                                                                
        $sequence_13 = { 68???????? ffd6 83c40c c605????????01 5f }
                                                                        
        $sequence_14 = { ff75e4 50 6aff 56 6a00 }
                                                                        
        $sequence_15 = { 7414 0f1f440000 3c20 7403 8801 41 }
                                                                                    
    condition:
        7 of them and filesize < 4142080
}

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

55d51a4f-75c4-4ba8-a7a5-677ddcc0df16

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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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