win_sysraw_stealer_auto

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

Detects win.sysraw_stealer.

rule win_sysraw_stealer_auto {

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

    


    strings:
        $sequence_0 = { 8d45b8 894dc0 50 894da0 ff15???????? }
                                                                        
        $sequence_1 = { 50 8b4508 8b08 51 8d55c8 }
                                                                        
        $sequence_2 = { 89459c 8d855cfeffff 894dbc 8b4dd4 50 8b45c8 8955cc }
                                                                                                
        $sequence_3 = { 8945ec eb3e 8b5244 68???????? 8b0402 0fbfd6 }
                                                                                    
        $sequence_4 = { 8d8d00ffffff 50 51 6a27 }
                                                            
        $sequence_5 = { 894218 8b4590 8b0e 8d955cfeffff 52 8b501c }
                                                                                    
        $sequence_6 = { 6a02 ff15???????? 8d45a8 8d4db8 50 51 }
                                                                                    
        $sequence_7 = { 8d8d0cffffff 50 8d9510ffffff 51 8d8514ffffff 52 8d8d18ffffff }
                                                                                                
        $sequence_8 = { 8d8d0cffffff ffd6 50 ffd3 }
                                                            
        $sequence_9 = { ffd6 50 ffd3 8bd0 8d8d44ffffff ffd6 }
                                                                                    
    condition:
        7 of them and filesize < 1540096
}

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

064bd7b2-781d-4f69-b882-f9edb1a086b7

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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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