win_swen_auto

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

Detects win.swen.

rule win_swen_auto {

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

    


    strings:
        $sequence_0 = { 891d???????? e9???????? 6810270000 e8???????? 59 85c0 74e6 }
                                                                                                
        $sequence_1 = { bb???????? 837ddc02 7362 897de4 837de400 7454 }
                                                                                    
        $sequence_2 = { bb02010000 68???????? 8bce e8???????? 68581b0000 }
                                                                        
        $sequence_3 = { e8???????? 6a04 ff75dc 8d45e4 50 e8???????? }
                                                                                    
        $sequence_4 = { 85c3 7445 8d4741 8885d8feffff }
                                                            
        $sequence_5 = { e8???????? 85c0 0f84b3000000 8d45b0 50 8d45ac 50 }
                                                                                                
        $sequence_6 = { f682a1ac410004 7403 40 ff01 ff01 40 e9???????? }
                                                                                                
        $sequence_7 = { ff05???????? 8345e402 6a03 56 ff75e4 e8???????? }
                                                                                    
        $sequence_8 = { 8d8590fbffff 50 8d8514ffffff 50 ff15???????? 8d855cfdffff 50 }
                                                                                                
        $sequence_9 = { ff7508 ff15???????? 881c37 8d85d8fdffff 50 57 e8???????? }
                                                                                                
    condition:
        7 of them and filesize < 286720
}

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

88d2e8a8-8d18-4921-b192-147e2f38d6e1

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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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