win_urlzone_auto

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

Detects win.urlzone.

rule win_urlzone_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-01-05"
        version = "1"
        description = "Detects win.urlzone."
        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.urlzone"
        malpedia_rule_date = "20260105"
        malpedia_hash = "19b79e7cab4eaf532122e5b45a77dd8f6bb5cc79"
        malpedia_version = "20251219"
        malpedia_license = "CC BY-SA 4.0"
        malpedia_sharing = "TLP:WHITE"

    


    strings:
        $sequence_0 = { 55 8bec 81c4e8fbffff 53 56 57 8b4514 }
                                                                                                
        $sequence_1 = { 8910 33c0 8943e4 c745fcffffffff eb1f 46 83c340 }
                                                                                                
        $sequence_2 = { 83fbff 0f8420070000 6a00 53 e8???????? 8945f8 }
                                                                                    
        $sequence_3 = { 50 e8???????? 6a00 6a00 2df1000000 50 8b06 }
                                                                                                
        $sequence_4 = { 6a00 56 6a00 6802000001 6a00 53 }
                                                                                    
        $sequence_5 = { 85c0 7c04 85d2 7d02 33c9 8bc1 c3 }
                                                                                                
        $sequence_6 = { 50 e8???????? b001 e8???????? 68???????? 68???????? e8???????? }
                                                                                                
        $sequence_7 = { c6041000 bf01000000 8db36cfeffff 8b06 85c0 7438 }
                                                                                    
        $sequence_8 = { bb???????? 8b45f8 50 8d8577ffffff 50 }
                                                                        
        $sequence_9 = { 7435 e9???????? 56 8d85effdffff }
                                                            
    condition:
        7 of them and filesize < 155648
}

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

d3ccc1bf-14ea-43a7-baab-d32bbd1e70cc

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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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