win_rockloader_auto

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

Detects win.rockloader.

rule win_rockloader_auto {

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

    


    strings:
        $sequence_0 = { d9ee 53 56 dd55ec d9e8 }
                                                                        
        $sequence_1 = { 7442 49 743a 49 49 7431 }
                                                                                    
        $sequence_2 = { eb07 50 ff15???????? 8bf0 85f6 7507 33c0 }
                                                                                                
        $sequence_3 = { 66c7005d00 8b36 0375fc e9???????? }
                                                            
        $sequence_4 = { 47 8a07 3c22 0f85a9feffff 5b c60600 803f22 }
                                                                                                
        $sequence_5 = { 0f8eb0000000 8b5dfc 8b4508 2bc3 8945f4 837d1000 }
                                                                                    
        $sequence_6 = { dc5df8 dfe0 f6c441 7a34 6a15 }
                                                                        
        $sequence_7 = { 03c8 8d5c0b02 eb07 c745fc01000000 8b3f }
                                                                        
        $sequence_8 = { 8b5508 5f 5e 895114 c7410c03000000 5b }
                                                                                    
        $sequence_9 = { e8???????? 8bd8 83c704 81fb00dc0000 720c 81fbffdf0000 0f86dc000000 }
                                                                                                
    condition:
        7 of them and filesize < 98304
}

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

7f984202-e5cd-40f5-b03a-be2523328d05

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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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