win_mm_core_auto

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

Detects win.mm_core.

rule win_mm_core_auto {

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

    


    strings:
        $sequence_0 = { 55 8bec 8b4508 33c9 3b04cd30b60010 7413 }
                                                                                    
        $sequence_1 = { e8???????? 85c0 753b 8d0424 50 }
                                                                        
        $sequence_2 = { 6a08 89442428 51 89442428 89442430 897c242c }
                                                                                    
        $sequence_3 = { 33c0 0fbe84c180e20010 6a07 c1f804 59 8985a4fbffff 3bc1 }
                                                                                                
        $sequence_4 = { 7442 833e00 743d 8b4608 40 50 }
                                                                                    
        $sequence_5 = { ebb0 8b55b8 8955c8 64a130000000 8945d4 8b4dd4 8b510c }
                                                                                                
        $sequence_6 = { 3db7000000 7415 6888130000 ff15???????? e8???????? e8???????? }
                                                                                    
        $sequence_7 = { 85d2 7437 8b4ddc 8b55d4 }
                                                            
        $sequence_8 = { 57 ff15???????? 8bf0 85f6 7422 c60600 0fbe07 }
                                                                                                
        $sequence_9 = { 8b442434 3bc3 7413 8b15???????? 50 }
                                                                        
    condition:
        7 of them and filesize < 319488
}

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

d4916a9d-c922-4202-b77a-2a5ad6bc876c

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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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