win_client_maximus_auto

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

Detects win.client_maximus.

rule win_client_maximus_auto {

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

    


    strings:
        $sequence_0 = { 890424 8954240c ff5320 ff15???????? 895c2408 }
                                                                        
        $sequence_1 = { 83c601 39730c 7fe1 891424 e8???????? }
                                                                        
        $sequence_2 = { 8954240c ff5320 ff15???????? 895c2408 c744240400000000 890424 }
                                                                                    
        $sequence_3 = { 55 89e5 56 53 83ec10 8b1d???????? c70424???????? }
                                                                                                
        $sequence_4 = { 7fe1 891424 e8???????? 8b4304 85c0 741d 8b5330 }
                                                                                                
        $sequence_5 = { 8b5330 c744240800800000 c744240400000000 890424 8954240c ff5320 ff15???????? }
                                                                                                
        $sequence_6 = { 7418 8b5014 85d2 7511 8b5034 }
                                                                        
        $sequence_7 = { 85c0 7438 c70424???????? ffd3 }
                                                            
        $sequence_8 = { 8b5330 890424 89542404 ff532c }
                                                            
        $sequence_9 = { 89c8 0fb63c0b 99 f77c241c 89f8 }
                                                                        
    condition:
        7 of them and filesize < 106496
}

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

b374c24a-8424-49fb-b849-c4b3299cfa20

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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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