win_virlock_auto

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

Detects win.virlock.

rule win_virlock_auto {

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

    


    strings:
        $sequence_0 = { e8???????? e8???????? ff15???????? 61 3bcb 7532 60 }
                                                                                                
        $sequence_1 = { ae a3???????? 1c30 bb47a1ffff 90 90 }
                                                                                    
        $sequence_2 = { 44 48 4e 47 50 4d }
                                                                                    
        $sequence_3 = { 81f29f67d5fa bbf5062af7 baaa94fffe 81f32aa06af9 3dc03d6c09 }
                                                                        
        $sequence_4 = { 56 42 54 4b 45 55 }
                                                                                    
        $sequence_5 = { 1a2b 25dcd984e8 2331 c1cf51 647bda a0???????? 143b }
                                                                                                
        $sequence_6 = { 6bd1c3 4a 84d5 3910 07 d0c3 4a }
                                                                                                
        $sequence_7 = { 47 49 43 53 49 4a 42 }
                                                                                                
        $sequence_8 = { ce 0238 0b7efd 829b5d40b7cfca 26fd 4f ce }
                                                                                                
        $sequence_9 = { 41 4b 55 53 44 42 4d }
                                                                                                
    condition:
        7 of them and filesize < 4202496
}

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

3193c98d-5988-4b9f-96d3-971ebc8ee6be

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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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