win_yorekey_auto

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

Detects win.yorekey.

rule win_yorekey_auto {

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

    


    strings:
        $sequence_0 = { 750a 85c0 7506 ff15???????? }
                                                            
        $sequence_1 = { 0f849a010000 488d8550030000 4c8d442460 4c2bc0 660f1f840000000000 }
                                                                        
        $sequence_2 = { 488d4dbc 4c8d05a5fd0000 488d0c41 41b903000000 488bc1 492bc6 }
                                                                                    
        $sequence_3 = { 8b5c2444 e9???????? 488d05930b0100 4a8b0ce8 41f6440c0880 }
                                                                        
        $sequence_4 = { c1f805 8b0485e0404100 83e61f c1e606 59 c644300400 85ff }
                                                                                                
        $sequence_5 = { 488b0d???????? ff15???????? 488d0d1c930100 48c705????????ffffffff ff15???????? }
                                                                        
        $sequence_6 = { 83e01f c1f905 c1e006 03048de0404100 eb02 }
                                                                        
        $sequence_7 = { 7508 ff15???????? eb05 e8???????? 8bc8 }
                                                                        
        $sequence_8 = { 83f808 742a 83f80d 7415 83f81b 7530 }
                                                                                    
        $sequence_9 = { 75c7 eb0a 48398c2490000000 74bb 4d85f6 }
                                                                        
        $sequence_10 = { c1e606 033485e0404100 c745e401000000 33db }
                                                            
        $sequence_11 = { 7416 8bc1 83e01f 8bd1 c1fa05 c1e006 030495e0404100 }
                                                                                                
        $sequence_12 = { 498bcf e8???????? 33c9 4d85f6 7456 482bde }
                                                                                    
        $sequence_13 = { 6a0d ff15???????? a3???????? 85c0 750c b801000000 5e }
                                                                                                
        $sequence_14 = { 482bdf 48d1fb 48399c2490000000 7621 4c8bcb 4c8bc7 4883caff }
                                                                                                
    condition:
        7 of them and filesize < 274432
}

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

cbc8316f-5f21-492f-a1b4-87b22b41bd6e

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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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