win_onliner_auto

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

Detects win.onliner.

rule win_onliner_auto {

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

    


    strings:
        $sequence_0 = { 33c6 23c3 33c7 0345fc 0345e0 05aff7448b ba0c000000 }
                                                                                                
        $sequence_1 = { 7435 68???????? ff75c4 68???????? ff75d4 8d854cffffff ba04000000 }
                                                                                                
        $sequence_2 = { 83e804 7420 48 83e80a 7220 eb41 83c0bf }
                                                                                                
        $sequence_3 = { 894304 33c0 5a 59 59 648910 68???????? }
                                                                                                
        $sequence_4 = { 7426 8bc6 e8???????? 8bd8 eb01 4b 85db }
                                                                                                
        $sequence_5 = { 8bc1 c1f805 8bf1 83e61f 8d3c8560f94c00 8b07 }
                                                                                    
        $sequence_6 = { dbac537f364000 def9 c1e805 7434 89c2 83e20f 740c }
                                                                                                
        $sequence_7 = { 80ea0a 7405 80ea03 7546 897c2404 8b0424 8bd3 }
                                                                                                
        $sequence_8 = { ba01000000 e8???????? eb60 833d????????01 7557 8b03 }
                                                                                    
        $sequence_9 = { 64ff30 648920 8b45f8 e8???????? bb01000000 33ff 8b45fc }
                                                                                                
    condition:
        7 of them and filesize < 1736704
}

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

f1fbe8f1-f8c2-4fb5-b9bb-6685e12b25a9

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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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