win_powerloader_auto

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

Detects win.powerloader.

rule win_powerloader_auto {

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

    


    strings:
        $sequence_0 = { 32db e8???????? 3bc7 7349 }
                                                            
        $sequence_1 = { 7441 8b5c2430 85db 741d }
                                                            
        $sequence_2 = { 33d2 ff15???????? 83f81f 7323 ff15???????? }
                                                                        
        $sequence_3 = { 8bf2 32db e8???????? 3bc7 }
                                                            
        $sequence_4 = { 0fb6d8 84c0 7514 ff15???????? }
                                                            
        $sequence_5 = { ff15???????? 83f803 7405 83f802 7530 }
                                                                        
        $sequence_6 = { e8???????? eb22 33c9 66666666660f1f840000000000 }
                                                            
        $sequence_7 = { 8bd0 e8???????? 85ff 740c }
                                                            
        $sequence_8 = { 33d2 ff15???????? 83f81f 7323 }
                                                            
        $sequence_9 = { ff15???????? 83f81f 7323 ff15???????? }
                                                            
    condition:
        7 of them and filesize < 155648
}

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

157c28ce-f9e4-4fa6-a5ab-028998285505

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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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