win_yoddos_auto

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

Detects win.yoddos.

rule win_yoddos_auto {

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

    


    strings:
        $sequence_0 = { ff15???????? 50 ffd6 b863000000 90 b89dffffff 90 }
                                                                                                
        $sequence_1 = { ffd7 50 ffd6 898538ffffff 899d50ffffff 899d3cffffff c68554ffffff4d }
                                                                                                
        $sequence_2 = { c78554ffffff00000001 e8???????? 6ada 8d8554ffffff 6a64 50 e8???????? }
                                                                                                
        $sequence_3 = { 66ab 59 33c0 8dbda1feffff 889da0feffff f3ab }
                                                                                    
        $sequence_4 = { 8d85fcfdffff 53 50 ff35???????? e8???????? 59 40 }
                                                                                                
        $sequence_5 = { 8d45d4 6a10 50 56 ebf0 }
                                                                        
        $sequence_6 = { 898550fcffff ffd6 8b8d54fcffff 53 0fb7c0 6683e100 }
                                                                                    
        $sequence_7 = { 8bf1 c1f805 83e61f 8d3c8500764100 c1e603 8b07 03c6 }
                                                                                                
        $sequence_8 = { 83bdf4feffff04 7710 8d4618 68???????? 50 e8???????? 59 }
                                                                                                
        $sequence_9 = { e9???????? 57 6a40 59 33c0 8dbdf9feffff 889df8feffff }
                                                                                                
    condition:
        7 of them and filesize < 557056
}

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

39d6bc2c-b374-4d62-b264-702cec544b72

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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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