win_unidentified_103_auto

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

Detects win.unidentified_103.

rule win_unidentified_103_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.unidentified_103."
        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.unidentified_103"
        malpedia_rule_date = "20260916"
        malpedia_hash = "53a643781c18e08f4a50949af60172d837a0b6f6"
        malpedia_version = "20260917"
        malpedia_license = "CC BY-SA 4.0"
        malpedia_sharing = "TLP:WHITE"

    


    strings:
        $sequence_0 = { 034704 8b4028 890424 ff570c 83ec18 85c0 }
                                                                                    
        $sequence_1 = { c784246c01000050726f63 6689842478010000 8d84246c010000 89442404 c784247001000065737333 c784247401000032466972 }
                                                                                    
        $sequence_2 = { 56 53 81ecfc000000 8db42498000000 8b9c2428010000 c744240401000000 893424 }
                                                                                                
        $sequence_3 = { 8b442440 01d0 39c3 0f8377ffffff 8b4e24 8b5c2444 89c8 }
                                                                                                
        $sequence_4 = { 85ed 0f85e20e0000 8b842408010000 85c0 7442 8b9c2490000000 890424 }
                                                                                                
        $sequence_5 = { ff942464080000 83ec0c 8bb42484080000 8d7c2440 8906 8d44243c c744243c00000000 }
                                                                                                
        $sequence_6 = { 89742418 895c2414 892c24 89442404 e8???????? 8d842498010000 89742418 }
                                                                                                
        $sequence_7 = { 0fbe5101 0f95c0 83c101 89c6 8d7436ff 31c0 84d2 }
                                                                                                
        $sequence_8 = { 8d842411050000 89442404 66898c2425050000 c78424110500004c6f6f6b c784241505000075705072 c78424190500006976696c }
                                                                                    
        $sequence_9 = { 89442478 e8???????? c68424fe00000000 c78424f20000004c6f6164 89c3 }
                                                                        
    condition:
        7 of them and filesize < 188416
}

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

460d800f-1546-4228-a3eb-093e42a9fabc

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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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