win_murkytop_auto

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

Detects win.murkytop.

rule win_murkytop_auto {

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

    


    strings:
        $sequence_0 = { 68???????? e8???????? 83c410 68???????? ff15???????? 5f }
                                                                                    
        $sequence_1 = { ff15???????? 81feea000000 0f843affffff 57 ff15???????? }
                                                                        
        $sequence_2 = { 3b7df8 72e0 8b45f4 3bc6 7407 }
                                                                        
        $sequence_3 = { 895df0 895de8 e8???????? 83c40c 8d95d0feffff 52 }
                                                                                    
        $sequence_4 = { 0fb6f3 0bce 8bd8 c1fb10 0fb6f3 66c1e608 }
                                                                                    
        $sequence_5 = { 0f8485000000 3c76 747b 3c56 }
                                                            
        $sequence_6 = { 8bc1 c1e004 2bc1 8d0c87 69c960ea0000 53 894de0 }
                                                                                                
        $sequence_7 = { e8???????? 83c410 8937 8b7f04 3bfe }
                                                                        
        $sequence_8 = { 0fb6ca 0fbe8960cf4100 85c9 750d e8???????? c7002a000000 eb7a }
                                                                                                
        $sequence_9 = { 6a00 6a00 68???????? 8b45c8 50 ffd7 3dea000000 }
                                                                                                
    condition:
        7 of them and filesize < 294912
}

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

e98455b3-1940-4cd7-8b72-c4f74988aa80

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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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