win_webc2_head_auto

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

Detects win.webc2_head.

rule win_webc2_head_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.webc2_head."
        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.webc2_head"
        malpedia_rule_date = "20260916"
        malpedia_hash = "53a643781c18e08f4a50949af60172d837a0b6f6"
        malpedia_version = "20260917"
        malpedia_license = "CC BY-SA 4.0"
        malpedia_sharing = "TLP:WHITE"

    


    strings:
        $sequence_0 = { 8b442410 83c204 48 89542424 }
                                                            
        $sequence_1 = { 5e 5d 83c8ff 5b 81c4341c0000 }
                                                                        
        $sequence_2 = { 8a15???????? b910000000 be???????? 8d7c2428 f3a5 895c2410 88542410 }
                                                                                                
        $sequence_3 = { 7e2a b910000000 be???????? 8dbc2474010000 f3a5 c1ea10 }
                                                                                    
        $sequence_4 = { 8d7c2414 c1e902 f3a5 8bca 83e103 f3a4 8b542414 }
                                                                                                
        $sequence_5 = { 55 ff15???????? a3???????? eb19 }
                                                            
        $sequence_6 = { 49 894c241c 8d942444040000 8d41fd 89542420 }
                                                                        
        $sequence_7 = { 8d049500000000 8d0c52 89442410 894c2424 8b442420 8b00 8bc8 }
                                                                                                
        $sequence_8 = { f6c202 7410 8088????????20 8a9405ecfcffff ebe3 80a0e0b8400000 }
                                                                                    
        $sequence_9 = { 884502 7e2a b910000000 be???????? 8dbc2474010000 }
                                                                        
    condition:
        7 of them and filesize < 106496
}

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

b4a3460a-1578-42e8-92d3-f82e0e2accbf

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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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