win_icondown_auto

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

Detects win.icondown.

rule win_icondown_auto {

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

    


    strings:
        $sequence_0 = { 83ec24 56 8bf1 89742404 e8???????? c744243000000000 c706???????? }
                                                                                                
        $sequence_1 = { c74500???????? 8bce c644241c0a e8???????? 8d8e90000000 c644241c09 }
                                                                                    
        $sequence_2 = { e8???????? 83c410 c1e702 53 8b442420 8b8cbf681e4500 50 }
                                                                                                
        $sequence_3 = { 8bf9 8b461c 50 ff15???????? 85c0 7407 }
                                                                                    
        $sequence_4 = { c705????????01000000 50 a3???????? e8???????? 8db67cb34400 bf???????? }
                                                                                    
        $sequence_5 = { 7732 8a4a02 8a5a03 3acb 7728 57 8b38 }
                                                                                                
        $sequence_6 = { e8???????? 83c404 e8???????? e8???????? e8???????? 68???????? e8???????? }
                                                                                                
        $sequence_7 = { 8a542420 64892500000000 88442416 88542417 8b01 8d542414 }
                                                                                    
        $sequence_8 = { 5b 81c45c0b0000 c3 8b44241c 83f805 0f8721030000 ff2485bc2f4000 }
                                                                                                
        $sequence_9 = { ff15???????? f7df 8b442434 8b4c2410 1bff c744241c00000000 83e7fc }
                                                                                                
    condition:
        7 of them and filesize < 5505024
}

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

c1a50d82-470e-4c52-b01e-e6b3b43c7974

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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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