win_flawedammyy_auto

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

Detects win.flawedammyy.

rule win_flawedammyy_auto {

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

    


    strings:
        $sequence_0 = { 3b58fc 0f8ebc000000 85c0 7514 }
                                                            
        $sequence_1 = { 0000 0404 0404 0404 0401 0404 }
                                                                                    
        $sequence_2 = { eb6c 682680acc8 6a01 e8???????? 83c408 68???????? eb56 }
                                                                                                
        $sequence_3 = { ff515c 8d4df0 8bf0 e8???????? 8b4de8 51 8b11 }
                                                                                                
        $sequence_4 = { 3b7d08 7caf 5f 5e 5b }
                                                                        
        $sequence_5 = { 3b5634 7ce8 eb76 8b4604 8b4d08 }
                                                                        
        $sequence_6 = { 3b5808 7e0f 8bce e8???????? }
                                                            
        $sequence_7 = { 3b5634 7d22 8b4df8 8d4206 }
                                                            
        $sequence_8 = { 8d85bcfcffff 68???????? 50 ffd3 68dff0f081 6a01 e8???????? }
                                                                                                
        $sequence_9 = { 8d85bcfdffff 50 68???????? e8???????? 83c408 }
                                                                        
        $sequence_10 = { 8365fc00 8b45e4 8b048588ae4100 f644180401 7418 ff7514 ff7510 }
                                                                                                
        $sequence_11 = { 72c3 5e 8aca 5f 88b800010000 888801010000 }
                                                                                    
        $sequence_12 = { 3b573c 7ca8 8b5d1c 8b87dc000000 }
                                                            
        $sequence_13 = { 3b5910 0f82de000000 8d4508 50 }
                                                            
        $sequence_14 = { e8???????? 83c408 68???????? 56 ffd0 68???????? }
                                                                                    
        $sequence_15 = { 0fbe80a8384100 83e00f eb02 33c0 8bbdbcfdffff 0fbebcc7c8384100 }
                                                                                    
        $sequence_16 = { eb08 6a64 ff15???????? 53 ff75a8 ff15???????? }
                                                                                    
        $sequence_17 = { 50 881f ff15???????? 53 8d85ccfdffff 56 50 }
                                                                                                
        $sequence_18 = { 8b3d???????? ffd7 ff75a8 ffd7 ff75dc }
                                                                        
        $sequence_19 = { 7431 6aff ff75e8 ff15???????? 8d45f8 50 ff75e8 }
                                                                                                
        $sequence_20 = { 8b7df4 8b0c855c303400 c1e705 33d2 03fe 42 837dfcff }
                                                                                                
        $sequence_21 = { 8b46f8 8b04855c303400 c1e002 50 6a40 }
                                                                        
        $sequence_22 = { 834de4ff 49 c745e8ff000000 8b3c857c303400 c745ecffff0000 }
                                                                        
        $sequence_23 = { ff15???????? a1???????? 56 85c0 742f 8b30 }
                                                                                    
        $sequence_24 = { 8bfe 381e 0f848e000000 8a06 3c0d }
                                                                        
        $sequence_25 = { e8???????? 8bf8 59 3bfb 59 75a4 8b75fc }
                                                                                                
        $sequence_26 = { ff15???????? e9???????? 57 8945e4 }
                                                            
        $sequence_27 = { 8b14957c303400 49 0fafd1 0155fc }
                                                            
        $sequence_28 = { 83f855 0f872affffff 0fb6805a213400 ff2485f6203400 8b8614080000 3b45f4 }
                                                                                    
        $sequence_29 = { 751e 837efcff 7518 8b46f8 8b04855c303400 }
                                                                        
        $sequence_30 = { c705????????4c403400 ff7508 ff15???????? 5a }
                                                            
        $sequence_31 = { 83661c00 83f807 0f87c9000000 ff248580233400 832700 e9???????? }
                                                                                    
    condition:
        7 of them and filesize < 1350656
}

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

b0d511b7-9272-423d-b1f0-4ae3e3361979

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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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