win_syscon_auto

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

Detects win.syscon.

rule win_syscon_auto {

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

    


    strings:
        $sequence_0 = { 8935???????? ffd7 e8???????? a1???????? 3bc6 7430 }
                                                                                    
        $sequence_1 = { 8935???????? 8935???????? c705????????10000000 8935???????? ffd7 e8???????? }
                                                                                    
        $sequence_2 = { 50 c705????????10000000 ff15???????? 5d c20400 }
                                                                        
        $sequence_3 = { 0f84f9000000 6a00 57 ff15???????? }
                                                            
        $sequence_4 = { 0f846affffff 833d????????00 7415 ff15???????? }
                                                            
        $sequence_5 = { 53 891d???????? ff15???????? 8b0d???????? 6aff }
                                                                        
        $sequence_6 = { ffd7 8b0d???????? b801000000 68???????? 51 }
                                                                        
        $sequence_7 = { 8b3d???????? 68???????? ffd7 6800010000 6a00 68???????? c744242000000000 }
                                                                                                
        $sequence_8 = { 89442430 894c2428 89542420 4c8d4590 488d8d200a0000 488d15963c0000 }
                                                                                    
        $sequence_9 = { 488d0d82260000 448bc0 e8???????? 488d9560010000 488d4c2450 e8???????? e9???????? }
                                                                                                
        $sequence_10 = { eb1e 83f904 740f c705????????02000000 83f901 }
                                                                        
        $sequence_11 = { 488d4c2420 ff15???????? 4885c0 7405 e8???????? 488b9c2440020000 }
                                                                                    
        $sequence_12 = { ff15???????? 488bf0 4883f8ff 0f841a010000 448b85e80f0000 488364242000 4c8d8de00f0000 }
                                                                                                
        $sequence_13 = { ff15???????? 488d542420 488d0d70500000 448bc0 e8???????? 488d542420 488bcf }
                                                                                                
        $sequence_14 = { ff15???????? 488d5590 4863c8 488d5c0908 }
                                                            
        $sequence_15 = { 750b 488bcf ff15???????? ebcb }
                                                            
    condition:
        7 of them and filesize < 120832
}

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

5cdfcf9c-e2ae-4f99-86f1-4a5b22168134

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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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