win_cuba_auto

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

Detects win.cuba.

rule win_cuba_auto {

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

    


    strings:
        $sequence_0 = { 0019 43 41 00444341 }
                                                            
        $sequence_1 = { 84c0 0f8414010000 8b06 813846494445 750d 8178044c2e4341 0f84fd000000 }
                                                                                                
        $sequence_2 = { 3985c8f9ffff 7414 8d85c0f9ffff 50 56 ff15???????? }
                                                                                    
        $sequence_3 = { 0026 45 41 003a }
                                                            
        $sequence_4 = { 000d???????? 384100 b538 41 }
                                                            
        $sequence_5 = { 5e 7426 6683bdf4fdffff00 741c 8d85f4fdffff }
                                                                        
        $sequence_6 = { ff15???????? eb16 39bdc8f9ffff 7414 8d85c0f9ffff }
                                                                        
        $sequence_7 = { 0012 45 41 0026 }
                                                            
        $sequence_8 = { 8945f0 8b450c 8945f4 8b4514 40 c745ecac9c4000 894df8 }
                                                                                                
        $sequence_9 = { 0026 43 41 00b043410062 }
                                                            
        $sequence_10 = { 8bce e8???????? e8???????? 8b4dfc 33c0 33cd 5e }
                                                                                                
        $sequence_11 = { 8b85e0feffff 03b40518ffffff 03b0fcb14100 03b5f8feffff }
                                                            
        $sequence_12 = { 000c43 41 0035???????? 43 }
                                                            
        $sequence_13 = { 003a 45 41 004245 }
                                                            
        $sequence_14 = { 03f0 8b85e0feffff 03b40514ffffff 03b0f8b14100 03b5e4feffff 8d0433 }
                                                                                    
        $sequence_15 = { 000446 41 00d1 45 }
                                                            
    condition:
        7 of them and filesize < 1094656
}

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

42943f9a-b322-4499-91f2-56646e53dfed

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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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