win_charon_auto

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

Detects win.charon.

rule win_charon_auto {

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

    


    strings:
        $sequence_0 = { 898424c0000000 48638424c0000000 488bc8 e8???????? 4889842430010000 }
                                                                        
        $sequence_1 = { 4889442468 8b44246c 8b4c242c 03c8 8bc1 b908000000 486bc903 }
                                                                                                
        $sequence_2 = { 0f85c3000000 8b442434 8bc8 e8???????? 4889442460 48837c246000 0f849c000000 }
                                                                                                
        $sequence_3 = { baffffff03 8b4c8428 e8???????? 8b4c2454 23c8 }
                                                                        
        $sequence_4 = { e8???????? 90 488b4c2430 e8???????? 90 488b4c2428 e8???????? }
                                                                                                
        $sequence_5 = { 8b04c2 33c1 8b4c2408 23c8 8bc1 89442404 8b0424 }
                                                                                                
        $sequence_6 = { e9???????? e9???????? 48837c245800 7e7e 48c744242000000000 4c8d4c2440 }
                                                                                    
        $sequence_7 = { 41b9ff010f00 4c8d058a7fffff 488d158b7fffff 488b4c2470 ff15???????? 4889442478 }
                                                                                    
        $sequence_8 = { 89442404 8b442440 8b4c2438 23c8 8bc1 890424 }
                                                                                    
        $sequence_9 = { eb0b c784242001000000000000 8b442418 83c007 4898 8b84c4a0010000 03442408 }
                                                                                                
    condition:
        7 of them and filesize < 254976
}

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

652ef38b-cd4b-40af-92e6-6b607c7046b8

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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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