win_data_exfiltrator_auto

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

Detects win.data_exfiltrator.

rule win_data_exfiltrator_auto {

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

    


    strings:
        $sequence_0 = { 4839842480000000 7610 488b842480000000 4889842488000000 }
                                                            
        $sequence_1 = { 7407 837c244000 7502 eb33 8b442440 }
                                                                        
        $sequence_2 = { 4889842498000000 8b442458 48898424a8000000 488b842488000000 48898424a0000000 488b8c2488010000 e8???????? }
                                                                                                
        $sequence_3 = { 4889442438 488b4c2438 e8???????? 448bc0 488b542438 488b4c2430 e8???????? }
                                                                                                
        $sequence_4 = { c644244d78 c644244e7a c644244f62 c644245075 }
                                                            
        $sequence_5 = { 488b442418 4883c002 4889442418 488b442448 4883c002 4889442448 }
                                                                                    
        $sequence_6 = { c6442460fb c6442461fc c6442462fe c6442463ff }
                                                            
        $sequence_7 = { 4889542410 48894c2408 4881ecf8000000 48c744243000000000 48c784248800000000000000 48c744245800000000 }
                                                                                    
        $sequence_8 = { 83e830 89442428 837c242800 7c3a 8b442448 39442428 7d30 }
                                                                                                
        $sequence_9 = { 488b4c2440 ff15???????? 4889442420 488d152b530000 488b4c2440 ff15???????? }
                                                                                    
    condition:
        7 of them and filesize < 107520
}

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

9ed3a7e8-7b1d-4f02-b362-e2f7a196e545

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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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