win_badencript_auto

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

Detects win.badencript.

rule win_badencript_auto {

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

    


    strings:
        $sequence_0 = { 23c1 eb55 8b1c9d68d14000 56 6800080000 }
                                                                        
        $sequence_1 = { 8b0c8d48414100 c644112800 85f6 740c }
                                                            
        $sequence_2 = { 660fd60f 8d7f08 8b048d04b54000 ffe0 }
                                                            
        $sequence_3 = { 57 8d1c85383d4100 33c0 f00fb10b 8b15???????? 83cfff }
                                                                                    
        $sequence_4 = { 7451 83e809 7443 83e801 0f8501010000 c745e0a40f4100 }
                                                                                    
        $sequence_5 = { 660fd60f 8d7f08 8b048d04b54000 ffe0 f7c703000000 7413 }
                                                                                    
        $sequence_6 = { c1fa06 6bc830 8b049548414100 f644082801 7414 8d4508 8945fc }
                                                                                                
        $sequence_7 = { 6bc830 8b049548414100 f644082801 7421 57 e8???????? }
                                                                                    
        $sequence_8 = { 83e03f c1fa06 6bc830 8b049548414100 f644082801 7414 }
                                                                                    
        $sequence_9 = { 7313 8a8750304100 08441619 42 }
                                                            
    condition:
        7 of them and filesize < 335872
}

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

a3d481ea-5461-457b-9bca-d3c76bf305d7

Propose edits, view related rules, and engage with the community through comments.

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 ]]

Community Discussion