win_orcarat_auto

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

Detects win.orcarat.

rule win_orcarat_auto {

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

    


    strings:
        $sequence_0 = { 57 8bf9 833f00 0f84c1000000 }
                                                            
        $sequence_1 = { 8b8c2434080000 50 51 55 55 56 }
                                                                                    
        $sequence_2 = { c68404380a000000 e8???????? 8dbc24300a0000 83c9ff }
                                                            
        $sequence_3 = { 8b8348030000 3bc7 7409 50 ffd6 89bb48030000 bf???????? }
                                                                                                
        $sequence_4 = { 52 e8???????? 8b542410 8d44240c 8d8c2418010000 50 51 }
                                                                                                
        $sequence_5 = { c3 53 6880020000 33f6 c744241080020000 e8???????? }
                                                                                    
        $sequence_6 = { c6043000 8b4324 85c0 7451 }
                                                            
        $sequence_7 = { 6a0a f3a4 bf???????? 83c9ff }
                                                            
        $sequence_8 = { 8b442410 85c0 7661 c68404240c000000 8d8424240c0000 6a00 50 }
                                                                                                
        $sequence_9 = { 52 e8???????? 8bf0 6a5c 8d7e01 }
                                                                        
    condition:
        7 of them and filesize < 114688
}

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

ac64b257-1a1e-46f1-85ae-6135e265ce99

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