win_vermilion_strike_auto

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

Detects win.vermilion_strike.

rule win_vermilion_strike_auto {

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

    


    strings:
        $sequence_0 = { 8bc3 83ec20 8d5001 8a08 40 84c9 }
                                                                                    
        $sequence_1 = { 8b4804 8b441908 03cb 83c801 83792800 7503 }
                                                                                    
        $sequence_2 = { c644242200 c644242313 8b442420 bb10000000 83c40c 8906 8b442420 }
                                                                                                
        $sequence_3 = { 83c508 e9???????? 83f802 7508 83c50a e9???????? 83f803 }
                                                                                                
        $sequence_4 = { 8818 e9???????? 8d4504 8818 e9???????? 8d4504 56 }
                                                                                                
        $sequence_5 = { 8d6c245c 8b442440 395c2454 7304 }
                                                            
        $sequence_6 = { ffd0 eb08 8b02 50 e8???????? 83c404 834e4801 }
                                                                                                
        $sequence_7 = { 33ff 8be8 57 55 e8???????? 83c40c 6a58 }
                                                                                                
        $sequence_8 = { 720c 8b4644 50 e8???????? 83c404 53 33db }
                                                                                                
        $sequence_9 = { 39b42480000000 720d 8b54246c 52 e8???????? 83c404 8bc5 }
                                                                                                
    condition:
        7 of them and filesize < 540672
}

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

cc96a8b9-e04e-4ec3-8d1e-cb9004d8018f

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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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