win_rustonotto_auto

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

Detects win.rustonotto.

rule win_rustonotto_auto {

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

    


    strings:
        $sequence_0 = { 74f5 4c0fafd8 83fa01 75ec 4d85db 7512 488d0d10ec0d00 }
                                                                                                
        $sequence_1 = { e8???????? 84c0 0f84aa000000 488b0d???????? 488b4138 4885c0 0f84e8000000 }
                                                                                                
        $sequence_2 = { e8???????? c6850708000000 c6850608000000 0f28742440 0f287c2430 4883c458 5b }
                                                                                                
        $sequence_3 = { 488d9530080000 e8???????? 4c8b8508180000 e9???????? 85c0 0f84fefdffff 488b0d???????? }
                                                                                                
        $sequence_4 = { 48c1e204 41b808000000 e8???????? 488b86f0000000 48ffc0 eb02 31c0 }
                                                                                                
        $sequence_5 = { b920000000 ba08000000 e8???????? 4885c0 0f84f1370000 488985e8170000 498b06 }
                                                                                                
        $sequence_6 = { 85c0 0f847afbffff 488d0dd2931900 e8???????? 89c2 84c0 0f8519feffff }
                                                                                                
        $sequence_7 = { 4d39ec 0f8376040000 410fb60424 49ffc4 4c896710 3c0a 0f8569040000 }
                                                                                                
        $sequence_8 = { c3 0fb64660 4883c428 5f 5e c3 488d0dfbe30f00 }
                                                                                                
        $sequence_9 = { 807d4600 7432 31c9 b001 488b5538 f00fb00a 7548 }
                                                                                                
    condition:
        7 of them and filesize < 5989376
}

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

232b4499-d83c-4a1b-9449-cca7dca099fb

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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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