win_corebot_auto

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

Detects win.corebot.

rule win_corebot_auto {

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

    


    strings:
        $sequence_0 = { 8035????????e4 8035????????e5 8035????????e6 8035????????e7 8035????????e8 8035????????e9 8035????????ea }
                                                                                                
        $sequence_1 = { a2???????? 8035????????01 8035????????02 8035????????03 }
                                                            
        $sequence_2 = { 8a02 8801 41 894de0 e9???????? }
                                                                        
        $sequence_3 = { 89ce 8b4604 85c0 740e 50 ff15???????? c7460400000000 }
                                                                                                
        $sequence_4 = { 89d7 01d2 c1ef07 8955e8 83e701 }
                                                                        
        $sequence_5 = { 0fb600 8945e8 c745ec07000000 8d1c00 }
                                                            
        $sequence_6 = { c3 31c0 ebfa 55 89e5 }
                                                                        
        $sequence_7 = { 8d0412 84d2 8945e8 783f }
                                                            
        $sequence_8 = { eb10 6800800000 6a00 56 }
                                                            
        $sequence_9 = { 85ff 740f 57 ff7508 }
                                                            
        $sequence_10 = { ff15???????? 8d4634 50 ff15???????? 8d4e0c }
                                                                        
        $sequence_11 = { ff15???????? 807e5000 7509 ff764c }
                                                            
        $sequence_12 = { 807e5800 7509 ff7654 ff15???????? 807e5000 }
                                                                        
        $sequence_13 = { ff7010 ff7014 e8???????? 8b45e0 }
                                                            
        $sequence_14 = { ff742428 e8???????? 8b442424 8d4c2410 }
                                                            
        $sequence_15 = { 85c0 7515 8b4624 3b4620 }
                                                            
    condition:
        7 of them and filesize < 1302528
}

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

cac90cd2-f173-4222-9669-74c5ed981115

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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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