win_bluenoroff_auto

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

Detects win.bluenoroff.

rule win_bluenoroff_auto {

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

    


    strings:
        $sequence_0 = { e8???????? 56 e8???????? 83c420 8b4dfc 33cd }
                                                                                    
        $sequence_1 = { 7429 8b4508 8b5510 8b4d0c 8906 52 }
                                                                                    
        $sequence_2 = { e8???????? 8b5508 8d4d0c 51 52 8d85fcfffeff }
                                                                                    
        $sequence_3 = { 8bec 51 8b4508 53 6a00 }
                                                                        
        $sequence_4 = { 56 8d95f8feffff 56 52 e8???????? 8b4dfc 83c428 }
                                                                                                
        $sequence_5 = { 8b55fc 320c3a 880f b901000000 }
                                                            
        $sequence_6 = { 881430 81f900010000 7ccb 5f 5e 5b }
                                                                                    
        $sequence_7 = { e8???????? b912010000 8bf3 f3a5 a1???????? 8b5004 83c410 }
                                                                                                
        $sequence_8 = { 8b7d10 66898e00010000 32db 8bc1 }
                                                            
        $sequence_9 = { 83feff 7433 8d4e01 51 6a40 }
                                                                        
    condition:
        7 of them and filesize < 303104
}

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

69eab05c-9f29-4341-96fd-b2d3a486779b

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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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