win_romeos_auto

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

Detects win.romeos.

rule win_romeos_auto {

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

    


    strings:
        $sequence_0 = { 8d44244c c644241701 50 bd30000000 e8???????? 8bbc2454200000 }
                                                                                    
        $sequence_1 = { 57 8bce e8???????? 85c0 7522 50 }
                                                                                    
        $sequence_2 = { 8b542414 6a16 8d44244c 52 50 e8???????? }
                                                                                    
        $sequence_3 = { 85c0 0f85ef000000 85db 751d 807c244802 0f85e0000000 }
                                                                                    
        $sequence_4 = { bd30000000 33db 85ed 7e0e e8???????? 88441c18 43 }
                                                                                                
        $sequence_5 = { 3bdd 7cf2 8b542414 6a16 8d44244c }
                                                                        
        $sequence_6 = { 43 83fb08 7cb6 e8???????? 99 }
                                                                        
        $sequence_7 = { 50 57 8bce e8???????? 85c0 7522 50 }
                                                                                                
        $sequence_8 = { 8d7c2449 c644244800 6a16 f3ab 66ab aa 8d44244c }
                                                                                                
        $sequence_9 = { bd30000000 e8???????? 8bbc2454200000 83c404 8bce }
                                                                        
    condition:
        7 of them and filesize < 294912
}

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

2e027404-ec24-48e4-8c5d-5ce5ae092fa3

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