win_dispenserxfs_auto

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

Detects win.dispenserxfs.

rule win_dispenserxfs_auto {

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

    


    strings:
        $sequence_0 = { 8d45ec 50 53 8d45d4 50 6837010000 57 }
                                                                                                
        $sequence_1 = { 56 57 8bf2 bf???????? e8???????? }
                                                                        
        $sequence_2 = { 837d0800 750b 8b4c2408 e8???????? eb66 837d0801 }
                                                                                    
        $sequence_3 = { 7e0e 6683380a 7501 4a 83e802 3bc7 }
                                                                                    
        $sequence_4 = { ff750c 6800100000 53 ff75fc ffd0 5b 8be5 }
                                                                                                
        $sequence_5 = { 663bc6 75f5 6810200000 2bca 8d442414 50 d1f9 }
                                                                                                
        $sequence_6 = { ba???????? 8bce e8???????? a3???????? 6a00 6a02 }
                                                                                    
        $sequence_7 = { ff15???????? 2b45fc 3de0930400 774a 68???????? e8???????? }
                                                                                    
        $sequence_8 = { 0fb74802 6685c9 0f84c9000000 8b5004 }
                                                            
        $sequence_9 = { 6838010000 57 ff15???????? 5e 85c0 7516 68???????? }
                                                                                                
    condition:
        7 of them and filesize < 114688
}

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

ed87bd7b-8f45-4c53-b726-4e77154dbfe2

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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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