win_starcruft_auto

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

Detects win.starcruft.

rule win_starcruft_auto {

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

    


    strings:
        $sequence_0 = { 50 ff15???????? 837de400 740c e8???????? 33c0 e9???????? }
                                                                                                
        $sequence_1 = { 6a02 6a00 6a00 68000000c0 8d8db8f2ffff 51 }
                                                                                    
        $sequence_2 = { 50 8b4d08 51 ff15???????? 8945fc 8b5508 52 }
                                                                                                
        $sequence_3 = { 83c404 8b55fc 0fb74202 83f821 7532 68???????? 8b4dfc }
                                                                                                
        $sequence_4 = { 55 8bec 8b4508 c7003c000000 8b4d08 8b550c }
                                                                                    
        $sequence_5 = { 837de400 7516 837df800 7510 837de800 750a 837dfc00 }
                                                                                                
        $sequence_6 = { 51 8b95a4fcffff 52 68???????? 6807020000 8d85e0fcffff 50 }
                                                                                                
        $sequence_7 = { 0bc8 8b550c 0fb64203 c1e018 0bc8 894db0 }
                                                                                    
        $sequence_8 = { 85c9 750d 6810270000 ff15???????? ebe7 eb26 }
                                                                                    
        $sequence_9 = { c645a46c c645a560 c645a659 8d4dac 51 }
                                                                        
    condition:
        7 of them and filesize < 294912
}

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

5e3971f9-8c19-4f65-81e6-19c8b39c7be6

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