win_playwork_auto

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

Detects win.playwork.

rule win_playwork_auto {

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

    


    strings:
        $sequence_0 = { 8b45fc 53 6a00 8b40fc 8945ec 8d85b8fbffff 50 }
                                                                                                
        $sequence_1 = { 68???????? 6802000080 ff15???????? 85c0 0f85bf000000 53 57 }
                                                                                                
        $sequence_2 = { 744c 56 6a00 ff742424 e8???????? }
                                                                        
        $sequence_3 = { 746b 8d4601 50 53 57 e8???????? }
                                                                                    
        $sequence_4 = { 895dfc 895df0 ffd0 395df0 c645fc01 895de8 750a }
                                                                                                
        $sequence_5 = { 85c0 0f842d030000 6a09 33c0 }
                                                            
        $sequence_6 = { 53 51 8d4dc8 51 53 56 ff5054 }
                                                                                                
        $sequence_7 = { ffd3 8d85f8fdffff 50 68???????? ff15???????? 683c0d0000 68???????? }
                                                                                                
        $sequence_8 = { 7406 8b08 50 ff5108 c3 51 51 }
                                                                                                
        $sequence_9 = { 3330 83c010 8975dc 0fb6f3 8b5df4 8b34b534533f00 }
                                                                                    
    condition:
        7 of them and filesize < 360448
}

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

568b4353-7bee-4fc5-a4a0-7a58994c164a

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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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