win_rtm_locker_auto

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

Detects win.rtm_locker.

rule win_rtm_locker_auto {

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

    


    strings:
        $sequence_0 = { 0f289d60ffffff 8d5640 8d458c 33ff 3bf0 7711 8d8550ffffff }
                                                                                                
        $sequence_1 = { 885c012e 8b0495500f4200 804c012d04 46 ebb3 ff15???????? 8945a8 }
                                                                                                
        $sequence_2 = { 8d0c9500000000 23d1 8955d8 8b55e4 81f2ffffff03 f7d2 8bca }
                                                                                                
        $sequence_3 = { 0f104598 0f118580fcffff 0f1045a8 0f118590fcffff e8???????? 8d8d68ffffff }
                                                                                    
        $sequence_4 = { 6a03 8d44241c 50 6a00 6a14 ff15???????? 5f }
                                                                                                
        $sequence_5 = { f7d7 23d9 81f6ffffff03 8bcb f7d6 c1e108 81f2ffffff01 }
                                                                                                
        $sequence_6 = { 8d8540fdffff 50 0f1185f0fcffff 8d95f0fcffff }
                                                            
        $sequence_7 = { 8d9518ffffff 0f104588 8d8d68ffffff 0f118538ffffff 0f104598 0f118548ffffff }
                                                                                    
        $sequence_8 = { 56 50 8b45e4 0345fc 50 }
                                                                        
        $sequence_9 = { 8be5 5d c3 b801000000 8b4df0 64890d00000000 5f }
                                                                                                
    condition:
        7 of them and filesize < 598016
}

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

3e62e7d9-34df-4fa1-be84-0a6024a0bc03

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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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