win_squidloader_auto

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

Detects win.squidloader.

rule win_squidloader_auto {

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

    


    strings:
        $sequence_0 = { 0f114c2440 0f114c2450 0f114c2460 0f114c2470 }
                                                            
        $sequence_1 = { 83f801 741c 33db 488d1544d10200 }
                                                            
        $sequence_2 = { 41bc01000000 4c8d1d1309feff 4181f8e9fd0000 0f857a010000 }
                                                            
        $sequence_3 = { 0f104f10 0f114e28 0f114618 488b0b }
                                                            
        $sequence_4 = { 0f104f10 0f114e34 0f114624 488b4c2468 }
                                                            
        $sequence_5 = { 488d15ccb00100 488bcb 488905???????? ff15???????? 488d15c5b00100 }
                                                                        
        $sequence_6 = { 0f104f10 0f114e50 0f114640 896e68 }
                                                            
        $sequence_7 = { 0f104f10 0f114e68 488b4720 48894678 }
                                                            
        $sequence_8 = { 0f104f10 0f114e14 0f114604 0f10442428 }
                                                            
        $sequence_9 = { 0f104f10 0f114e10 0f1106 ffc3 488b4c2428 4831e1 }
                                                                                    
        $sequence_10 = { e8???????? 837dd70c 0f9dc3 0f8dc5010000 }
                                                            
        $sequence_11 = { eb05 488b7c2438 4c8b742430 4c3bf7 }
                                                            
        $sequence_12 = { 85c0 7426 83f901 488d05ab7c0200 }
                                                            
        $sequence_13 = { 0f104f10 0f114e10 0f1106 e9???????? f30f100f f30f104710 f30f105314 }
                                                                                                
        $sequence_14 = { ff15???????? 488bc8 488d151c900200 ff15???????? 4885c0 }
                                                                        
    condition:
        7 of them and filesize < 18701312
}

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

6917e49e-33e3-4e27-a28a-91b6786abe52

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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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