win_rambo_auto

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

Detects win.rambo.

rule win_rambo_auto {

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

    


    strings:
        $sequence_0 = { 56 6800040000 8d85f8faffff 6a00 50 e8???????? 83c40c }
                                                                                                
        $sequence_1 = { 8d85f8feffff 50 c645fc72 c645fd62 ff15???????? 8bf0 }
                                                                                    
        $sequence_2 = { 83c420 85f6 7437 56 }
                                                            
        $sequence_3 = { 59 50 ff7508 ff15???????? 56 ff15???????? }
                                                                                    
        $sequence_4 = { 6a32 ff15???????? 8d85f8faffff 50 68???????? e8???????? 59 }
                                                                                                
        $sequence_5 = { 56 ff15???????? 8d85ecfdffff 50 8d85f0feffff 50 ff15???????? }
                                                                                                
        $sequence_6 = { 8d85fcfeffff 50 e8???????? 59 8d85fcfeffff 59 }
                                                                                    
        $sequence_7 = { 56 6a01 ff7508 e8???????? 59 50 ff7508 }
                                                                                                
        $sequence_8 = { 8d4c2424 c684240804000013 e8???????? 50 }
                                                            
        $sequence_9 = { 68???????? 6801000080 ff15???????? 85c0 756b }
                                                                        
        $sequence_10 = { c644245135 885c2452 c644245438 c644245531 c644245637 }
                                                                        
        $sequence_11 = { 75ef ff15???????? 5f 5e }
                                                            
        $sequence_12 = { e8???????? 89842494000000 8b442424 6a00 50 8d8c24a4000000 }
                                                                                    
        $sequence_13 = { c684240404000009 e8???????? 8d4c2410 c684240004000007 e8???????? 68b6000000 8d542414 }
                                                                                                
        $sequence_14 = { e8???????? b941000000 33c0 8dbc24ec000000 be???????? f3ab }
                                                                                    
        $sequence_15 = { 8d8c2488000000 e8???????? 55 55 }
                                                            
    condition:
        7 of them and filesize < 57344
}

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

c883652e-9c6e-4308-964d-65e389a29e27

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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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