win_polpo_auto

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

Detects win.polpo.

rule win_polpo_auto {

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

    


    strings:
        $sequence_0 = { 83feff 7514 83c8ff 5e 8b4dfc 33cd e8???????? }
                                                                                                
        $sequence_1 = { 8b0d???????? 50 51 c745e020000000 }
                                                            
        $sequence_2 = { 33db 8d8dd6fdffff 33c0 53 51 }
                                                                        
        $sequence_3 = { 81ff00001000 0f8387000000 8b96b0080000 52 8d45bc }
                                                                        
        $sequence_4 = { ffd6 85c0 8b859cfdffff 50 0f8516020000 }
                                                                        
        $sequence_5 = { 64a100000000 50 81ec88090000 a1???????? 3145f8 33c5 8945e4 }
                                                                                                
        $sequence_6 = { 8d041e 50 51 ff15???????? 85c0 0f8ec8000000 03d8 }
                                                                                                
        $sequence_7 = { 50 ff15???????? 8b8614040000 50 ff15???????? 8b8600040000 85c0 }
                                                                                                
        $sequence_8 = { 8d8dd6fdffff 33c0 53 51 89bdccfdffff 668985d4fdffff }
                                                                                    
        $sequence_9 = { 7e46 8b7508 33c0 8d9b00000000 0fb60c86 880c83 0fb64c8601 }
                                                                                                
    condition:
        7 of them and filesize < 250880
}

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

3a04fb2d-dcc2-41bf-bf56-01c2e2e13199

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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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