win_systembc_auto

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

Detects win.systembc.

rule win_systembc_auto {

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

    


    strings:
        $sequence_0 = { b000 ae 75fd 8a57fe 80fa39 }
                                                                        
        $sequence_1 = { 742b ff7518 6a00 6a00 ff75fc }
                                                                        
        $sequence_2 = { 6a00 8d85fcfbffff 50 8b45f8 8b08 50 }
                                                                                    
        $sequence_3 = { 6880b55cd6 8b45f8 8b08 8b91a8000000 50 ffd2 }
                                                                                    
        $sequence_4 = { c745e801000000 c745ec06000000 8d45dc 50 8d45e0 50 }
                                                                                    
        $sequence_5 = { 397d08 7757 837d1000 740e 8b5510 8802 8a07 }
                                                                                                
        $sequence_6 = { ab 837d0c00 7403 ff47fc 837d0800 7403 }
                                                                                    
        $sequence_7 = { 8b4514 ab 8b4518 ab b801000000 }
                                                                        
        $sequence_8 = { ab b801000000 5e 5f }
                                                            
        $sequence_9 = { e8???????? 4883c420 4883ec20 488d8de0f2ffff 48c7c208000000 e8???????? 4883c420 }
                                                                                                
        $sequence_10 = { 488d0dca230000 48c7c232000000 4c8d4704 4c8bc8 e8???????? 4883c420 }
                                                                                    
        $sequence_11 = { 4889542410 4c89442418 55 488bec 53 }
                                                                        
        $sequence_12 = { 48c7c100000000 48c7c200000000 49c7c000000000 4c8d4f7c }
                                                            
        $sequence_13 = { ab 488b4530 ab 48c7c001000000 }
                                                            
        $sequence_14 = { 4883c420 4883ec30 488b4d98 48c7c200000000 }
                                                            
        $sequence_15 = { 49c7c100000000 488d8530ffffff 4889442420 ff15???????? 4883c430 85c0 7492 }
                                                                                                
    condition:
        7 of them and filesize < 75776
}

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

8febafd1-cba0-492d-8582-faf19c9fbf0a

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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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