win_unidentified_039_auto

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

Detects win.unidentified_039.

rule win_unidentified_039_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.unidentified_039."
        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_039"
        malpedia_rule_date = "20260916"
        malpedia_hash = "53a643781c18e08f4a50949af60172d837a0b6f6"
        malpedia_version = "20260917"
        malpedia_license = "CC BY-SA 4.0"
        malpedia_sharing = "TLP:WHITE"

    


    strings:
        $sequence_0 = { c745dc904a0000 8945fc 8b45dc 8b4dec 8d8401f1e3ffff 8b4d0c }
                                                                                    
        $sequence_1 = { 8945f0 8b450c 8945f4 8b4514 40 c745ecaa344100 894df8 }
                                                                                                
        $sequence_2 = { c745f4296f0000 c745fcf67e0000 c745f8d31b0000 c745e89d4e0000 c745f4930f0000 c745f064200000 }
                                                                                    
        $sequence_3 = { 0fbe06 50 ff7508 e8???????? 0fbec0 0fbe80a8b04100 }
                                                                                    
        $sequence_4 = { e8???????? 59 8945f4 ff75ec 8b5d08 8b3d???????? 53 }
                                                                                                
        $sequence_5 = { 0fafc1 56 57 33f6 56 6a01 }
                                                                                    
        $sequence_6 = { c74538d2430000 c74528ac320000 c7453821650000 8b4538 8b4d28 69c0103b0000 33c1 }
                                                                                                
        $sequence_7 = { 034dec 8b45f0 2dc9200000 33c8 8b45f4 0bc8 8b45f8 }
                                                                                                
        $sequence_8 = { e8???????? 59 c3 e8???????? c3 6a14 }
                                                                                    
        $sequence_9 = { ff75d4 ff15???????? c745f0b24c0000 c745ec44770000 c745e85c2d0000 }
                                                                        
    condition:
        7 of them and filesize < 262144
}

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

a620d4aa-b3e6-4911-a1db-e44387bcbbed

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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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