win_makop_auto

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

Detects win.makop.

rule win_makop_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.makop."
        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.makop"
        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 e8???????? a1???????? 8b3d???????? 83c40c }
                                                                        
        $sequence_1 = { e9???????? 8b0d???????? 8b09 85c9 8bd1 743b 8b4204 }
                                                                                                
        $sequence_2 = { 8d4c2414 51 8d54241c 52 ffd6 85c0 0f841c010000 }
                                                                                                
        $sequence_3 = { 53 66891f 895f10 895f14 894718 c7471c04000000 ff15???????? }
                                                                                                
        $sequence_4 = { 8b542418 8b44241c 33c9 899648080000 8b542420 }
                                                                        
        $sequence_5 = { 33c0 8d4c2414 51 a3???????? a1???????? 6a02 e8???????? }
                                                                                                
        $sequence_6 = { 51 6a10 52 53 ffd6 85c0 }
                                                                                    
        $sequence_7 = { 740f 85db 740b 837c242000 7404 85c0 }
                                                                                    
        $sequence_8 = { 66c74424423200 6689542444 66894c2448 66c744244a7300 }
                                                            
        $sequence_9 = { 6a08 8d4cf808 51 8d542418 52 e8???????? 0fb744241c }
                                                                                                
    condition:
        7 of them and filesize < 107520
}

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

c40adec6-d1f7-4361-ae8d-53128c345a74

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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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