win_transferloader_auto

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

Detects win.transferloader.

rule win_transferloader_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-01-05"
        version = "1"
        description = "Detects win.transferloader."
        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.transferloader"
        malpedia_rule_date = "20260105"
        malpedia_hash = "19b79e7cab4eaf532122e5b45a77dd8f6bb5cc79"
        malpedia_version = "20251219"
        malpedia_license = "CC BY-SA 4.0"
        malpedia_sharing = "TLP:WHITE"

    


    strings:
        $sequence_0 = { 0fb609 880c02 e9???????? 48837c244800 7412 4c8b442448 33d2 }
                                                                                                
        $sequence_1 = { 4889442438 41b810000000 488b542438 488b4c2430 }
                                                            
        $sequence_2 = { 88440c20 b801000000 486bc002 b901000000 486bc901 }
                                                                        
        $sequence_3 = { 488d442424 48898424f8000000 488d442420 4889842400010000 }
                                                            
        $sequence_4 = { b903000000 f3aa 48b8bce015361abafbff 48898424c8000000 c744242c00000000 486344242c }
                                                                                    
        $sequence_5 = { 4889842498010000 488b842490010000 4889842468010000 c6442440eb c644244108 c644244248 c644244389 }
                                                                                                
        $sequence_6 = { 488b09 4863493c 480308 488bc1 4889442430 488b442430 }
                                                                                    
        $sequence_7 = { 4889542410 48894c2408 4881eca8000000 c6442420eb c644242108 }
                                                                        
        $sequence_8 = { 488b442420 4889442428 488b442428 0fb700 3d4d5a0000 7404 32c0 }
                                                                                                
        $sequence_9 = { 488b8c2420010000 ff15???????? 4883bc24e000000000 7418 4c8b8424e0000000 33d2 }
                                                                                    
    condition:
        7 of them and filesize < 216064
}

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

e2cb80b7-3bc0-4b62-87f1-82b4ce7c419f

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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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