win_stealhook_auto

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

Detects win.stealhook.

rule win_stealhook_auto {

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

    


    strings:
        $sequence_0 = { 490f47c3 6644390401 7411 ffc2 4883c102 4863c2 }
                                                                                    
        $sequence_1 = { 498bce 49837e1807 7603 498b0e 0fb70478 }
                                                                        
        $sequence_2 = { 418d4c2440 e8???????? 488bd8 488985a0000000 }
                                                            
        $sequence_3 = { be01000000 83630800 488d057ba70400 488903 eb02 33db 48891f }
                                                                                                
        $sequence_4 = { 4c8d05cea40100 418b01 83e03f 488d0cc0 498b04d0 448a44c838 4180e0fe }
                                                                                                
        $sequence_5 = { 488b8090000000 0f114170 0f118980000000 48898190000000 488d0518300000 4889458f 488b454f }
                                                                                                
        $sequence_6 = { e8???????? 4084f6 488d0dd01f0600 7504 488b4f10 4c8d442428 33d2 }
                                                                                                
        $sequence_7 = { 412bc7 7428 413bc7 755b 4c8d05161a0100 488b9558070000 498bce }
                                                                                                
        $sequence_8 = { 4981f880000000 73c2 4d8d480f 4983e1f0 4d8bd9 49c1eb04 478b9c9a68430700 }
                                                                                                
        $sequence_9 = { 488d9424b0020000 4983fc07 490f47d7 4883c210 4c8bc6 488d8c2450020000 }
                                                                                    
    condition:
        7 of them and filesize < 1129472
}

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

cc31bf20-37be-4774-9c05-e4564eafd515

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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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