win_rusty_claw_auto

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

Detects win.rusty_claw.

rule win_rusty_claw_auto {

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

    


    strings:
        $sequence_0 = { e8???????? 31c9 89f2 c645e301 c745f001000000 e8???????? 0f0b }
                                                                                                
        $sequence_1 = { 8d742410 8d442430 8930 c74004???????? 894808 c7400c29a64000 8d742408 }
                                                                                                
        $sequence_2 = { e8???????? 83c40c 8b4dd4 8b55c8 e8???????? 8b4da4 8b55a8 }
                                                                                                
        $sequence_3 = { c3 55 83ec0c 8db524fbffff 8baec8040000 8b4e20 8b5624 }
                                                                                                
        $sequence_4 = { 0f84e6020000 85d2 8915???????? 0f84d8020000 ffd2 8b15???????? 89c6 }
                                                                                                
        $sequence_5 = { 894808 89700c 8b4a14 8b5218 50 eb2a 8b4500 }
                                                                                                
        $sequence_6 = { 58 59 8b4304 833b00 7406 8b742414 }
                                                                                    
        $sequence_7 = { 8945e0 c6411001 83c01c 8365f000 89c1 e8???????? }
                                                                                    
        $sequence_8 = { 6a1f 8975e0 56 e8???????? 6a00 6a00 6a00 }
                                                                                                
        $sequence_9 = { 89e2 56 50 8d742428 56 e8???????? }
                                                                                    
    condition:
        7 of them and filesize < 518144
}

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

4a2f4ebc-8382-498e-9d26-40c75d99da99

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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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