win_royal_ransom_auto

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

Detects win.royal_ransom.

rule win_royal_ransom_auto {

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

    


    strings:
        $sequence_0 = { c1f806 4863c8 488d052b3a1100 4c89642448 440fb66708 4c89742440 440fb637 }
                                                                                                
        $sequence_1 = { 8bcb 488d15a6091800 48c1e103 41b8c0000000 e8???????? 48894708 4885c0 }
                                                                                                
        $sequence_2 = { 5f c3 e8???????? 4c8d05495b0d00 ba6d000000 488d0d555b0d00 e8???????? }
                                                                                                
        $sequence_3 = { 895c2454 3b5c2450 0f8cd7feffff 488b542440 4533c9 4533c0 498bce }
                                                                                                
        $sequence_4 = { e8???????? 33c0 e9???????? 4883c60a 488d1590081700 488bce e8???????? }
                                                                                                
        $sequence_5 = { 488d15c6131500 488bcf e8???????? 4885c0 7421 488d5520 488bc8 }
                                                                                                
        $sequence_6 = { 8d5621 488d0d2e5e1400 e8???????? 4533c0 8d4e06 baa5000000 e8???????? }
                                                                                                
        $sequence_7 = { e8???????? 85c0 7f1a 41b89b000000 488d1544bd1500 488bcb 4883c420 }
                                                                                                
        $sequence_8 = { e8???????? 33c0 eb5d 488d15a6370b00 488bcf e8???????? 4885c0 }
                                                                                                
        $sequence_9 = { e8???????? e8???????? 4c8d05aa311700 bae0000000 488d0d6e311700 e8???????? 4533c0 }
                                                                                                
    condition:
        7 of them and filesize < 6235136
}

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

dc70fed9-9ff7-45d1-b9ae-c96b0b52cd12

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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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