win_mebromi_auto

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

Detects win.mebromi.

rule win_mebromi_auto {

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

    


    strings:
        $sequence_0 = { 5f eb26 8d4508 8db694702900 6a00 }
                                                                        
        $sequence_1 = { b82c2900d8 2c29 0000 2d29008a46 0323 }
                                                                        
        $sequence_2 = { 8bec 8b4508 ff348520712900 ff15???????? }
                                                            
        $sequence_3 = { eb0f 0fb6d2 f68201a0290004 7403 }
                                                            
        $sequence_4 = { 56 ffd7 3bdd 5b }
                                                            
        $sequence_5 = { 68000000c0 68???????? ff15???????? 8b3d???????? 83f8ff a3???????? 7544 }
                                                                                                
        $sequence_6 = { 58 c20c00 ff05???????? 833d????????01 55 56 57 }
                                                                                                
        $sequence_7 = { 68???????? ff742410 ff15???????? 8bf0 85f6 7416 57 }
                                                                                                
        $sequence_8 = { 8888009f2900 eb1f 83f861 7213 83f87a }
                                                                        
        $sequence_9 = { ff742410 ff15???????? 8bf0 85f6 7416 57 56 }
                                                                                                
    condition:
        7 of them and filesize < 106496
}

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

b468b1d1-ecb1-4819-b214-d484679e1dd8

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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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