win_wastedloader_auto

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

Detects win.wastedloader.

rule win_wastedloader_auto {

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

    


    strings:
        $sequence_0 = { 8b4df8 0fb75156 83ea54 8b45f8 66895056 b9b8000000 }
                                                                                    
        $sequence_1 = { e74d b980344b51 7385 20e1 }
                                                            
        $sequence_2 = { 1008 a6 660f1b09 0000 a7 7280 011cfd80edc199 }
                                                                                                
        $sequence_3 = { 04ee 1dd1704c64 0ffda4e83d005d04 008b4c81d274 }
                                                            
        $sequence_4 = { 98 fc b54c 90 b182 7c80 }
                                                                                    
        $sequence_5 = { 6a3b 11c2 855cb412 8bb8181480c8 1808 007056 8b4c00f9 }
                                                                                                
        $sequence_6 = { 037fc1 00e4 1ac7 7240 ad 58 2448 }
                                                                                                
        $sequence_7 = { 6ac1 8b700b 2c85 a5 5b df8bd2687320 ef }
                                                                                                
        $sequence_8 = { 2430 8b1c24 a1???????? b6f6 ff4565 f9 }
                                                                                    
        $sequence_9 = { 1c34 83f4f0 0d844de3fd ff959ef9ff7b f34a 24f0 801abd }
                                                                                                
    condition:
        7 of them and filesize < 2677760
}

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

565cfe03-665e-4ebd-b46a-a3ac635a4899

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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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