win_kurton_auto

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

Detects win.kurton.

rule win_kurton_auto {

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

    


    strings:
        $sequence_0 = { 8bf0 8dbc2420010000 f3a5 50 }
                                                            
        $sequence_1 = { 53 50 8d4e10 e8???????? 8b0d???????? 8d54242c }
                                                                                    
        $sequence_2 = { 8d4e70 52 c744241400000000 aa e8???????? 8d442410 }
                                                                                    
        $sequence_3 = { 8a4c2413 8d7e20 896c2424 880f 896f04 896f08 }
                                                                                    
        $sequence_4 = { 5b 64890d00000000 81c4c4000000 c3 83ec14 53 56 }
                                                                                                
        $sequence_5 = { 8d4c242c 50 57 e8???????? 68???????? e8???????? 83c404 }
                                                                                                
        $sequence_6 = { e8???????? 85c0 741e 8b44241c 53 6a00 68???????? }
                                                                                                
        $sequence_7 = { 8b45fc 02d3 885104 99 }
                                                            
        $sequence_8 = { e8???????? 68???????? 68???????? 8d4c2414 c78424ac02000000000000 e8???????? 84c0 }
                                                                                                
        $sequence_9 = { 8be9 57 33db b918000000 33c0 }
                                                                        
    condition:
        7 of them and filesize < 344064
}

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

70368679-c2b5-46cd-8951-58126ed049b3

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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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