win_bitsran_auto

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

Detects win.bitsran.

rule win_bitsran_auto {

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

    


    strings:
        $sequence_0 = { 030495a01f4200 eb05 b8???????? f6400420 7414 6a02 53 }
                                                                                                
        $sequence_1 = { 8b4508 33c9 3b04cda8034200 7413 41 83f92d }
                                                                                    
        $sequence_2 = { 8bc7 c1f805 c1e606 033485a01f4200 8b45f8 }
                                                                        
        $sequence_3 = { 8bd1 c1fa05 c1e006 030495a01f4200 eb05 }
                                                                        
        $sequence_4 = { 83ec54 56 8b7508 85f6 7508 83c8ff }
                                                                                    
        $sequence_5 = { 57 8d45ec 50 8d8decfbffff }
                                                            
        $sequence_6 = { 75e6 c6460401 830eff 2b34bda01f4200 }
                                                            
        $sequence_7 = { ff15???????? 6803010000 8d85f1fcffff 6a00 50 c685f0fcffff00 }
                                                                                    
        $sequence_8 = { 8a85eefcffff 8a8deffcffff c7830c02000000000000 84c9 740a }
                                                                        
        $sequence_9 = { 3bfa 7553 8bc7 2bc3 c1f802 3dfeffff3f 775c }
                                                                                                
    condition:
        7 of them and filesize < 344064
}

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

2ff64e67-07e1-4e39-ad5e-c0ed3b1f8ec5

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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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