win_lorenz_auto

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

Detects win.lorenz.

rule win_lorenz_auto {

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

    


    strings:
        $sequence_0 = { 83780400 7c20 8b4d0c 8b5104 8955fc 8b4508 }
                                                                                    
        $sequence_1 = { 8b55d4 8d048a 50 e8???????? 83c40c 8b4dec 8b55d4 }
                                                                                                
        $sequence_2 = { f775e8 8945d4 8b55e0 3b55d4 731a 8b45ec 8b4dd4 }
                                                                                                
        $sequence_3 = { 8bc8 e8???????? 0fb6d0 85d2 751b 8b45fc 8b08 }
                                                                                                
        $sequence_4 = { e8???????? c745fcffffffff 8d4d08 e8???????? eb47 8b4de8 83c104 }
                                                                                                
        $sequence_5 = { 8b515c 833c8200 7518 8b4d0c 8b5508 c1e205 8b45fc }
                                                                                                
        $sequence_6 = { c745ec00000000 0fb64510 85c0 0f8416010000 8b4d08 e8???????? 8945e4 }
                                                                                                
        $sequence_7 = { c7818401000000000000 8b55f0 c7828801000001000000 8b45f0 c7808c01000000000000 8b4df0 c7819001000000000000 }
                                                                                                
        $sequence_8 = { 55 8bec 83ec18 8b4508 8b4810 8b510c 8955e8 }
                                                                                                
        $sequence_9 = { 8b4dfc c7410c01000000 8b4df8 81c130010000 e8???????? 8b45fc 8be5 }
                                                                                                
    condition:
        7 of them and filesize < 2254848
}

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

7a8bbd4f-8c2d-4bf4-b3c1-0342a7553678

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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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