win_gootkit_auto

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

Detects win.gootkit.

rule win_gootkit_auto {

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

    


    strings:
        $sequence_0 = { 8bec 83ec30 53 8bc1 0f57c0 }
                                                                        
        $sequence_1 = { 8b470c 894104 8b4d0c 85c9 740a 8b4710 }
                                                                                    
        $sequence_2 = { 8b35???????? 81c704010000 6a00 ffd6 50 ff15???????? 8d043f }
                                                                                                
        $sequence_3 = { c1cf0d 03f8 41 3bca }
                                                            
        $sequence_4 = { 6a01 6800000080 ff75f4 ff15???????? 8bf8 83ffff 743f }
                                                                                                
        $sequence_5 = { 83ffff 743f 6a00 6a00 ff75f8 }
                                                                        
        $sequence_6 = { 8945f8 3b45f0 72d6 eb09 0fb706 8b4dec 8d3c81 }
                                                                                                
        $sequence_7 = { 895df8 0fb74314 8d7b18 0fb75b06 }
                                                            
        $sequence_8 = { 8b7df4 32c0 8b4de4 f3aa }
                                                            
        $sequence_9 = { f3aa 68???????? ff15???????? 50 }
                                                            
        $sequence_10 = { 50 e8???????? 83c40c 68fd000000 }
                                                            
        $sequence_11 = { 50 68???????? ff15???????? 85c0 7505 e8???????? }
                                                                                    
        $sequence_12 = { 50 8b4508 8b00 99 52 }
                                                                        
        $sequence_13 = { 7514 c705????????01000000 c705????????02000000 8be5 5d }
                                                                        
        $sequence_14 = { 833d????????00 750a 6a32 ff15???????? }
                                                            
        $sequence_15 = { 6808020000 6a00 ff15???????? 50 }
                                                            
        $sequence_16 = { e8???????? 6a0c 6a08 ff15???????? 50 }
                                                                        
        $sequence_17 = { 6a02 ff15???????? 6888130000 ff15???????? }
                                                            
        $sequence_18 = { e8???????? 8d45fc 50 6a01 6a01 6a00 }
                                                                                    
        $sequence_19 = { e8???????? 85c0 750c c705????????03000000 }
                                                            
        $sequence_20 = { e8???????? 85c0 740d 6810270000 ff15???????? }
                                                                        
        $sequence_21 = { 53 53 53 8901 }
                                                            
        $sequence_22 = { 0f110f 0f104820 0f114710 0f104030 0f114f20 0f104840 }
                                                                                    
        $sequence_23 = { 83faff 7508 ff15???????? 8bd0 }
                                                            
        $sequence_24 = { 6a1c 50 56 ff15???????? 8b4de8 b84d5a0000 }
                                                                                    
        $sequence_25 = { 7412 83ec0c ba???????? b9???????? e8???????? e8???????? }
                                                                                    
        $sequence_26 = { 0f104040 0f114740 0f104850 0f114f50 0f104060 0f114760 8b4070 }
                                                                                                
        $sequence_27 = { 663901 754e 8b513c 03d1 813a50450000 }
                                                                        
        $sequence_28 = { 750c 807b01ff 7506 807b0225 }
                                                            
        $sequence_29 = { b9???????? e8???????? 83ec0c ba???????? b9???????? }
                                                                        
        $sequence_30 = { 0f114760 8b4070 894770 be01000000 }
                                                            
        $sequence_31 = { 85c0 7550 ff15???????? 8bf8 893d???????? }
                                                                        
        $sequence_32 = { 7235 8b82dc000000 0382d8000000 03c1 3bd8 }
                                                                        
        $sequence_33 = { 8bc8 e8???????? 3935???????? 7412 83ec0c ba???????? }
                                                                                    
        $sequence_34 = { 85c0 7510 8d4864 ff15???????? ffc3 83fb0a 7cd5 }
                                                                                                
        $sequence_35 = { 8bf9 6a40 6a00 8bf7 57 81e60000ffff e8???????? }
                                                                                                
        $sequence_36 = { 0f114f20 0f104840 0f114730 0f104050 0f114f40 0f104860 0f114750 }
                                                                                                
    condition:
        7 of them and filesize < 516096
}

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

41044204-fcba-4b35-90bb-531ba23e27dc

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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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