win_quantloader_auto

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

Detects win.quantloader.

rule win_quantloader_auto {

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

    


    strings:
        $sequence_0 = { 8b45f0 89442404 c7042440000000 e8???????? 83ec08 8945ec }
                                                                                    
        $sequence_1 = { 89442404 8b45f8 890424 e8???????? 83ec18 b8???????? }
                                                                                    
        $sequence_2 = { c70424???????? e8???????? c744240800040000 c744240400000000 c70424???????? e8???????? 8b4508 }
                                                                                                
        $sequence_3 = { c745ec00000000 e8???????? 8d55f4 89542408 c744240408000000 890424 e8???????? }
                                                                                                
        $sequence_4 = { 83ec08 8945f8 837df800 7405 8b45f8 }
                                                                        
        $sequence_5 = { e8???????? c7442408???????? 89442404 c7042401000080 e8???????? 89442404 }
                                                                                    
        $sequence_6 = { 807dff00 751e c70424???????? e8???????? 89442404 }
                                                                        
        $sequence_7 = { c744241002000000 c744240c00000000 c744240803000000 c744240400000040 8b450c 890424 }
                                                                                    
        $sequence_8 = { 8b3424 b90a000000 e8???????? 0fb70c56 5e }
                                                                        
        $sequence_9 = { 7413 ad 50 83e807 }
                                                            
        $sequence_10 = { 85ff 746a 03fb 57 ff5504 85c0 7504 }
                                                                                                
        $sequence_11 = { 57 ab f3a5 64a118000000 }
                                                            
        $sequence_12 = { 48 89442420 8bf8 8d0cbd08000000 64a118000000 8b702c }
                                                                                    
        $sequence_13 = { 55 e8???????? 5d 8bc4 ff7010 }
                                                                        
        $sequence_14 = { c7457c00000000 81c243e15762 8b4d74 8bfe 837d6400 }
                                                                        
        $sequence_15 = { e8???????? 59 e8???????? 8974241c }
                                                            
    condition:
        7 of them and filesize < 155648
}

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

3076086d-b679-470b-9189-f70ba1a59a1e

Propose edits, view related rules, and engage with the community through comments.

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 ]]

Community Discussion