win_avzhan_auto

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

Detects win.avzhan.

rule win_avzhan_auto {

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

    


    strings:
        $sequence_0 = { 6a00 6a00 8d8c2418020000 6a00 51 6a00 }
                                                                                    
        $sequence_1 = { 81c300040000 e8???????? 83c061 8bcb }
                                                            
        $sequence_2 = { 6a00 6a00 6a00 6a00 6a00 8d8c2418020000 6a00 }
                                                                                                
        $sequence_3 = { 68???????? eb1d 6a02 e8???????? 83c008 }
                                                                        
        $sequence_4 = { 6a1a 81c300040000 e8???????? 83c061 }
                                                            
        $sequence_5 = { f2ae f7d1 6a00 51 8d8c2404020000 51 56 }
                                                                                                
        $sequence_6 = { 50 ff15???????? e9???????? 68???????? 53 6801001f00 ff15???????? }
                                                                                                
        $sequence_7 = { c744243844000000 f3ab 8b442464 8b3d???????? }
                                                            
        $sequence_8 = { 7410 68d0070000 ffd7 6a00 8b542414 52 }
                                                                                    
        $sequence_9 = { 3935???????? 7450 8b942464010000 8d442464 52 50 e8???????? }
                                                                                                
    condition:
        7 of them and filesize < 122880
}

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

96aa07e3-f7ab-442d-a3a4-41d7498a1a4f

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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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