win_doublefinger_auto

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

Detects win.doublefinger.

rule win_doublefinger_auto {

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

    


    strings:
        $sequence_0 = { c644046890 b801000000 486bc007 c644046897 c74424500d4ce35c b8c90d0000 6689442454 }
                                                                                                
        $sequence_1 = { 488b0d???????? 4c8bcb 4533c0 bac2000000 }
                                                            
        $sequence_2 = { e8???????? 89442420 488d4c2420 488b442440 ff90b0000000 8b4c2448 8b542450 }
                                                                                                
        $sequence_3 = { 4889842490020000 c78424f8010000436f496e c78424fc01000069746961 c78424000200006c697a65 c784240402000000000000 }
                                                                        
        $sequence_4 = { baf961bb46 488b8c2480000000 e8???????? 4889842420040000 }
                                                            
        $sequence_5 = { 488b842468010000 488b88a8000000 e8???????? 488b442438 488b00 488b4c2438 ff5048 }
                                                                                                
        $sequence_6 = { 8b05???????? 83f801 751d 488d1593120000 488d0d7c120000 }
                                                                        
        $sequence_7 = { 4533c0 8b942410010000 488b4c2450 e8???????? 4889842438020000 4533c0 8b942414010000 }
                                                                                                
        $sequence_8 = { 8b08 e8???????? 89442424 488b442440 4883c008 4889442458 }
                                                                                    
        $sequence_9 = { 8bc0 8bd0 b940000000 488b8424d0000000 ff5038 4889442458 48837c245800 }
                                                                                                
    condition:
        7 of them and filesize < 115712
}

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

453a284e-9ec9-4640-89e5-8b086ca01bfe

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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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