win_neconyd_auto

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

Detects win.neconyd.

rule win_neconyd_auto {

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

    


    strings:
        $sequence_0 = { 740c 40 394510 7644 66890c47 8bd8 83f802 }
                                                                                                
        $sequence_1 = { 6a15 8d44243c 50 ff74241c ff15???????? 89442424 }
                                                                                    
        $sequence_2 = { 89450c 7503 897d0c 8b5d0c eb0a e8???????? }
                                                                                    
        $sequence_3 = { 6a08 ff35???????? ffd7 8bf8 85ff 897df0 0f844f010000 }
                                                                                                
        $sequence_4 = { 8b45fc e8???????? 8bf8 83ff01 59 59 }
                                                                                    
        $sequence_5 = { ffd3 50 ff15???????? 8b450c 5f 5b 5e }
                                                                                                
        $sequence_6 = { 85c9 7424 85f6 7420 7620 662101 }
                                                                                    
        $sequence_7 = { 8bd3 e8???????? 59 8d45c0 50 ba???????? e8???????? }
                                                                                                
        $sequence_8 = { 8d5c3701 8a03 84c0 0f8eda000000 3c1e 0f8fd2000000 }
                                                                                    
        $sequence_9 = { 8d45f4 50 e8???????? 8d85d8feffff }
                                                            
    condition:
        7 of them and filesize < 326182
}

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

e5db1200-c39e-4d44-839c-450da6fb0fdf

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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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