win_neddnloader_auto

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

Detects win.neddnloader.

rule win_neddnloader_auto {

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

    


    strings:
        $sequence_0 = { 41 8bc1 2b45fc 5f }
                                                            
        $sequence_1 = { 7311 0fb702 0fb731 663bc6 7506 83c102 83c202 }
                                                                                                
        $sequence_2 = { 8b5508 69c0b179379e c1e813 03c9 }
                                                            
        $sequence_3 = { 55 8bec 83e4f8 81ec10060000 a1???????? 33c4 8984240c060000 }
                                                                                                
        $sequence_4 = { 47 57 e8???????? 2b5d10 83c40c 03df }
                                                                                    
        $sequence_5 = { 83c204 3bcf 72f0 8d43ff }
                                                            
        $sequence_6 = { ff15???????? 8b4df8 56 3bc8 }
                                                            
        $sequence_7 = { 72f0 8d43ff 3bc8 7311 0fb702 0fb731 }
                                                                                    
        $sequence_8 = { 741e 488bce 488bc6 488d1500370100 83e11f 48c1f805 }
                                                                                    
        $sequence_9 = { 4133bc8c804d0100 4133bc8480590100 418bc0 41337d40 }
                                                            
        $sequence_10 = { 8bcf 8bc7 0f97c1 4d3be5 0f97c0 85c8 }
                                                                                    
        $sequence_11 = { 7403 f0ff00 488d4158 41b806000000 488d1560f50000 483950f0 740b }
                                                                                                
        $sequence_12 = { 488d4c2470 488d82fef7ff7f 4885c0 7416 }
                                                            
        $sequence_13 = { 41c1e008 0fb6c8 420fb68421803b0100 4433c0 400fb6c7 420fb68420803b0100 }
                                                                                    
        $sequence_14 = { 488d15b1fa0000 48894c2420 4885c9 7419 }
                                                            
        $sequence_15 = { 83fb0d 0f8c46020000 418b06 488b9c2480000000 4d8d6601 }
                                                                        
    condition:
        7 of them and filesize < 3438592
}

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

1dae3380-306d-443d-bee0-0d8e003fab8a

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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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