win_backspace_auto

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

Detects win.backspace.

rule win_backspace_auto {

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

    


    strings:
        $sequence_0 = { 56 e8???????? 59 6a05 56 ffd7 50 }
                                                                                                
        $sequence_1 = { ac 90 d1e8 90 745f 90 }
                                                                                    
        $sequence_2 = { 6a2f 50 ff15???????? bf???????? 8d9c3574faffff 57 53 }
                                                                                                
        $sequence_3 = { 56 e8???????? 83c424 68???????? 56 e8???????? }
                                                                                    
        $sequence_4 = { 50 8d4701 56 50 ffd3 85c0 }
                                                                                    
        $sequence_5 = { a3???????? 7510 ff35???????? ff15???????? 33c0 eb02 }
                                                                                    
        $sequence_6 = { 8b0d???????? 69c90c020000 83b96464400000 0f8591000000 }
                                                            
        $sequence_7 = { 8b0d???????? 03c1 8078fe3a 750a 8078ff5c 0f8495000000 8d8500feffff }
                                                                                                
        $sequence_8 = { e8???????? 83c41c 8d5c0301 ff15???????? b980ee3600 33d2 8bf9 }
                                                                                                
        $sequence_9 = { 57 50 ffd6 83c418 85db }
                                                                        
    condition:
        7 of them and filesize < 131072
}

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

8451b951-9a27-4eee-b0b7-1dacd7384661

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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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