win_unidentified_045_auto

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

Detects win.unidentified_045.

rule win_unidentified_045_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.unidentified_045."
        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.unidentified_045"
        malpedia_rule_date = "20260916"
        malpedia_hash = "53a643781c18e08f4a50949af60172d837a0b6f6"
        malpedia_version = "20260917"
        malpedia_license = "CC BY-SA 4.0"
        malpedia_sharing = "TLP:WHITE"

    


    strings:
        $sequence_0 = { 8d85f8feffff 50 68???????? 56 ff15???????? 5f }
                                                                                    
        $sequence_1 = { 83feff 744a 6a04 6800300000 56 }
                                                                        
        $sequence_2 = { ff15???????? 50 ff15???????? a3???????? 3bc3 744e }
                                                                                    
        $sequence_3 = { 51 6a28 50 8945f8 ff15???????? }
                                                                        
        $sequence_4 = { 8901 8b8534ffffff 8b0d???????? 8901 8b8538ffffff 8b0d???????? 8901 }
                                                                                                
        $sequence_5 = { 72f7 885106 eb47 83fe04 }
                                                            
        $sequence_6 = { 833d????????01 7520 389c2458020000 7417 8d44243c }
                                                                        
        $sequence_7 = { ff15???????? 83bd34ffffff06 0f830b010000 8d45dc 50 68???????? 6a00 }
                                                                                                
    condition:
        7 of them and filesize < 73728
}

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

1fd1aafb-d89c-49a5-b5e6-b7f6709f8a02

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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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