win_ntospy_auto

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

Detects win.ntospy.

rule win_ntospy_auto {

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

    


    strings:
        $sequence_0 = { 5f c3 48897c2408 488d3dacf90000 }
                                                            
        $sequence_1 = { eb74 85c9 7858 3b15???????? 7350 488bca 4c8d05e5b40000 }
                                                                                                
        $sequence_2 = { 8bfa 4c8d0d5d740000 488bd9 488d1553740000 b916000000 4c8d053f740000 e8???????? }
                                                                                                
        $sequence_3 = { b808000000 486bc000 488d0deaad0000 48c7040102000000 b808000000 }
                                                                        
        $sequence_4 = { 48890d???????? 488d0512f50000 488d0d3bf70000 488905???????? 48890d???????? e8???????? }
                                                                                    
        $sequence_5 = { 4c8d0578760000 488d15016d0000 e8???????? 4885c0 740f 488bcb }
                                                                                    
        $sequence_6 = { f20f1000 8b5808 e9???????? 488d05dfc70000 4a8b0ce8 }
                                                                        
        $sequence_7 = { 488d0d4c710000 8364242800 41b803000000 4533c9 }
                                                            
        $sequence_8 = { c3 4883ec28 e8???????? 488bc8 488d1501040100 }
                                                                        
        $sequence_9 = { 4533f6 4863ce 488d3d20f90000 488bc1 }
                                                            
    condition:
        7 of them and filesize < 208896
}

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

f8631e7b-643a-44a5-a4e9-14fefe652174

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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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