win_coredn_auto

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

Detects win.coredn.

rule win_coredn_auto {

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

    


    strings:
        $sequence_0 = { 56 8d45fc 8bf1 50 e8???????? 85c0 }
                                                                                    
        $sequence_1 = { 6690 8d82fafeff7f 85c0 741c 8a040e 84c0 7415 }
                                                                                                
        $sequence_2 = { 0f1f440000 3811 7408 41 83e801 75f6 }
                                                                                    
        $sequence_3 = { 5e 5d c20400 85d2 750d }
                                                                        
        $sequence_4 = { 7423 8a1c06 84db 741c 8818 4a }
                                                                                    
        $sequence_5 = { bf7a000780 c60000 8bc7 5f 5b 5e }
                                                                                    
        $sequence_6 = { bf00000000 8d0432 2bca 7438 }
                                                            
        $sequence_7 = { 7415 8801 41 83ea01 75e7 }
                                                                        
        $sequence_8 = { 50 e8???????? 83c40c 6b45e430 8945e0 8d80a8304100 }
                                                                                    
        $sequence_9 = { e8???????? 83c408 8d842490040000 50 }
                                                            
        $sequence_10 = { 668945e8 8b45d4 886de5 8b148508414100 8a4c1a2d f6c104 7419 }
                                                                                                
        $sequence_11 = { 6808020000 8d842494040000 6a00 50 e8???????? }
                                                                        
        $sequence_12 = { 8365fc00 8b049d08414100 8b4de0 f644082801 7515 }
                                                                        
        $sequence_13 = { 8bcf 8bc7 894de4 399898304100 0f84ea000000 }
                                                                        
        $sequence_14 = { 740b 6a01 50 e8???????? 83c408 8b442420 85c0 }
                                                                                                
    condition:
        7 of them and filesize < 270336
}

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

02648c7e-ca5c-4b99-b5b3-fd4c00a59f30

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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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