win_silence_auto

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

Detects win.silence.

rule win_silence_auto {

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

    


    strings:
        $sequence_0 = { 8d45fc 50 6a00 6a00 68???????? c745fc00000000 }
                                                                                    
        $sequence_1 = { cc 8325????????00 c3 6a08 68???????? }
                                                                        
        $sequence_2 = { 40 84c9 75f4 eb05 }
                                                            
        $sequence_3 = { 683f020f00 6a00 68???????? 6801000080 ff15???????? 68???????? }
                                                                                    
        $sequence_4 = { ff15???????? 6a00 6800000004 6a00 6a00 }
                                                                        
        $sequence_5 = { 68???????? ffd6 8b45fc 85c0 }
                                                            
        $sequence_6 = { 46 56 8d85f8feffff 50 6a01 }
                                                                        
        $sequence_7 = { 6801000080 ff15???????? 56 8d85f8feffff }
                                                            
        $sequence_8 = { f3c3 e9???????? e8???????? e9???????? 6a14 68???????? }
                                                                                    
        $sequence_9 = { 3acb 740a 8a4801 40 84c9 }
                                                                        
        $sequence_10 = { 5b 5d c3 c60200 }
                                                            
        $sequence_11 = { 8bd8 68???????? 53 ff15???????? 6a00 6a00 }
                                                                                    
        $sequence_12 = { 6a00 8bf8 6a00 57 ff15???????? 8d45fc }
                                                                                    
        $sequence_13 = { 75f4 eb0d 803800 7408 8a5a01 42 84db }
                                                                                                
        $sequence_14 = { 50 ff15???????? 8bf0 6a00 85f6 }
                                                                        
        $sequence_15 = { 6800080000 8d85bcf7ffff 50 56 ff15???????? }
                                                                        
        $sequence_16 = { 8b85b8f7ffff 85c0 75b6 ffb5acf7ffff }
                                                            
        $sequence_17 = { ff5004 8b46f8 0346f4 57 }
                                                            
        $sequence_18 = { 03d7 3b56f0 7611 8b46ec }
                                                            
        $sequence_19 = { e8???????? 8b4ef4 8bc7 2bc1 }
                                                            
        $sequence_20 = { 8b35???????? ffd6 ff7704 ffd6 ff770c ffd6 }
                                                                                    
        $sequence_21 = { ff5210 8b17 8bcf ff5208 }
                                                            
        $sequence_22 = { e8???????? 83c41c 895ef8 897ef0 }
                                                            
        $sequence_23 = { 85c9 7412 8b01 52 8d95f0fdffff 52 ff10 }
                                                                                                
        $sequence_24 = { e8???????? ff37 8b35???????? ffd6 }
                                                            
        $sequence_25 = { ff15???????? 488d542430 488d8c2440020000 ff15???????? }
                                                            
        $sequence_26 = { e8???????? ba00040000 b940000000 ff15???????? }
                                                            
        $sequence_27 = { ff15???????? ba180c0000 b940000000 ff15???????? }
                                                            
        $sequence_28 = { 8b05???????? d3e0 8b0d???????? 03c8 }
                                                            
        $sequence_29 = { d3f8 0fb60d???????? d3e0 85c0 }
                                                            
        $sequence_30 = { 99 83e203 03c2 c1f802 89442448 }
                                                                        
        $sequence_31 = { d3e8 0fb6c8 8b05???????? d3e0 }
                                                            
        $sequence_32 = { ff15???????? 41b804010000 488d542430 488d4c2430 ff15???????? 85c0 }
                                                                                    
        $sequence_33 = { 7507 68???????? ffd7 6a00 6a00 6a01 6a00 }
                                                                                                
        $sequence_34 = { ff15???????? c20800 53 8b1d???????? 57 0f57c0 }
                                                                                    
        $sequence_35 = { ff15???????? 68c0d40100 ff15???????? e9???????? }
                                                            
        $sequence_36 = { 55 8bec ff4d08 755d 833d????????04 7554 }
                                                                                    
        $sequence_37 = { c705????????00000000 c705????????00000000 c705????????00000000 ffd3 8b3d???????? }
                                                                        
        $sequence_38 = { c705????????04000000 ff15???????? 85c0 750b 68???????? }
                                                                        
        $sequence_39 = { 85c0 750e 68???????? ff15???????? c20800 53 }
                                                                                    
        $sequence_40 = { 68???????? 68???????? ff15???????? a3???????? 85c0 750e 68???????? }
                                                                                                
        $sequence_41 = { 8d0441 33d2 b905000000 f7f1 }
                                                            
        $sequence_42 = { 750b 68???????? ff15???????? ff35???????? ff15???????? }
                                                                        
        $sequence_43 = { 50 6a00 ff15???????? 6a00 6a00 68???????? ff15???????? }
                                                                                                
        $sequence_44 = { 8945e0 833d????????00 7511 8b55ec 0355ec 7509 }
                                                                                    
        $sequence_45 = { 8945c0 e8???????? 8945a8 e8???????? 8945ac e8???????? 8945b0 }
                                                                                                
    condition:
        7 of them and filesize < 70128640
}

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

2aac1683-d4c3-42a0-8064-37050543c5e3

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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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