win_zebrocy_auto

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

Detects win.zebrocy.

rule win_zebrocy_auto {

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

    


    strings:
        $sequence_0 = { 014158 11515c e8???????? dc6360 }
                                                            
        $sequence_1 = { 8b4a04 8b55ec 03cb 85d2 7420 8b410c }
                                                                                    
        $sequence_2 = { 8bf3 e8???????? c645fc00 837dd410 720c 8b4dc0 51 }
                                                                                                
        $sequence_3 = { 8bf3 c745fc01000000 e8???????? 837db010 0f8291020000 8b459c }
                                                                                    
        $sequence_4 = { 66891478 8bc6 5f c3 8bff }
                                                                        
        $sequence_5 = { 0110 8b7dd4 ba???????? 89470c }
                                                            
        $sequence_6 = { 0103 31d2 85ff 8b03 }
                                                            
        $sequence_7 = { 0103 8b0e ba???????? e8???????? }
                                                            
        $sequence_8 = { 897e10 897e14 837dd410 720c }
                                                            
        $sequence_9 = { 0102 8b45d4 89500c 89c1 }
                                                            
        $sequence_10 = { 8d8508f7ffff 8a1c38 8db598f6ffff e8???????? }
                                                            
        $sequence_11 = { 014150 8b550c 115154 014158 }
                                                            
        $sequence_12 = { 83e71f c1e706 8b0485c0a84200 8d44380c 50 ff15???????? 8b45e4 }
                                                                                                
        $sequence_13 = { 0103 83c41c 5b 5e }
                                                            
        $sequence_14 = { 8b55ec 33ff 897c1820 897c1824 }
                                                            
        $sequence_15 = { 0110 5e 5f 5d }
                                                            
    condition:
        7 of them and filesize < 393216
}

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

c3f3a9ae-e5bd-4907-af70-b292fc1e213d

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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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