win_funny_dream_auto

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

Detects win.funny_dream.

rule win_funny_dream_auto {

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

    


    strings:
        $sequence_0 = { 8b8bc0000000 83ec08 8bd7 6a50 }
                                                            
        $sequence_1 = { 8d8564feffff 8bca 50 6a00 6a00 6a20 6a01 }
                                                                                                
        $sequence_2 = { c7471800000000 3b5f14 7423 660f1f840000000000 8b33 }
                                                                        
        $sequence_3 = { 8b44241c 8bcf 03c6 83c30a 83c40c 03d8 }
                                                                                    
        $sequence_4 = { 47 81ff70170000 7f19 6a00 6800020000 ff75fc ff75f8 }
                                                                                                
        $sequence_5 = { ffd1 8bf0 8d4508 6a00 50 53 56 }
                                                                                                
        $sequence_6 = { 2bcb 51 56 8bca e8???????? e8???????? 83c418 }
                                                                                                
        $sequence_7 = { 83c40c 8d8564feffff 0f57c0 0f1185acfeffff 50 ff15???????? }
                                                                                    
        $sequence_8 = { 2bca b804000000 c7442434337a335a 89742438 89442414 894c2420 }
                                                                                    
        $sequence_9 = { 57 ffb1c0000000 ffd2 85c0 7f0f 8b4dfc 46 }
                                                                                                
    condition:
        7 of them and filesize < 393216
}

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

4ef188c0-e945-4c8f-bcac-7b8ed6b8e490

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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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