win_op_blockbuster_auto

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

Detects win.op_blockbuster.

rule win_op_blockbuster_auto {

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

    


    strings:
        $sequence_0 = { 6a00 e8???????? 85c0 7407 83f802 }
                                                                        
        $sequence_1 = { f3ab 66ab aa 5f 85f6 }
                                                                        
        $sequence_2 = { 8a08 80f920 7505 83c021 }
                                                            
        $sequence_3 = { e8???????? 6800400000 6a00 ff15???????? }
                                                            
        $sequence_4 = { ff15???????? 6808400000 6a40 ff15???????? }
                                                            
        $sequence_5 = { c701???????? 8b497c 85c9 7407 }
                                                            
        $sequence_6 = { 57 683c400000 6a40 ff15???????? }
                                                            
        $sequence_7 = { 68???????? 56 ff15???????? 68???????? 56 a3???????? e8???????? }
                                                                                                
        $sequence_8 = { 56 50 8d45fc 6a04 50 57 ff15???????? }
                                                                                                
        $sequence_9 = { ff15???????? 85c0 7412 68???????? 50 e8???????? }
                                                                                    
        $sequence_10 = { 3c69 7c08 3c70 7f04 }
                                                            
        $sequence_11 = { 7f04 0409 eb06 3c72 }
                                                            
        $sequence_12 = { 8bf0 ff15???????? 85f6 7404 85c0 }
                                                                        
        $sequence_13 = { 48895c2408 57 4883ec50 488bc2 4533c9 }
                                                                        
        $sequence_14 = { 5e c3 68???????? ff15???????? 85c0 7412 }
                                                                                    
        $sequence_15 = { 6a00 ff15???????? 8bf8 85ff 7504 5f }
                                                                                    
        $sequence_16 = { 488d542444 4d8bcc 41b804000000 488bcd c744242001000000 }
                                                                        
        $sequence_17 = { 57 e8???????? 56 e8???????? 83c414 b801000000 }
                                                                                    
        $sequence_18 = { 8bc6 5f 5e c3 33c0 6a00 39442408 }
                                                                                                
        $sequence_19 = { 48898424d0070000 488bfa 4533c9 ba7a341200 }
                                                            
        $sequence_20 = { 488d4d70 e8???????? 8d43fd e9???????? 4533c9 }
                                                                        
        $sequence_21 = { ebf8 53 33db 391d???????? 56 57 7542 }
                                                                                                
        $sequence_22 = { c3 56 53 6a01 57 }
                                                                        
        $sequence_23 = { 83c714 890431 8b4580 89443104 488b442438 44896c3110 }
                                                                                    
        $sequence_24 = { ff15???????? 8b4c2468 488d95e0030000 e8???????? 488d8de0030000 448be8 }
                                                                                    
        $sequence_25 = { 68???????? 56 e8???????? 56 e8???????? 83c438 }
                                                                                    
        $sequence_26 = { 660f28aaf0534400 660f54e5 660f58fe 660f58fc 660f59c8 f20f59d8 660f58ca }
                                                                                                
        $sequence_27 = { 6bc930 53 8b5d10 8b0485d8974400 56 8b7508 57 }
                                                                                                
        $sequence_28 = { 83f807 0f8786000000 ff24858b674000 68???????? eb13 }
                                                                        
        $sequence_29 = { 8b35???????? 8d85f8fdffff 50 ff7508 ffd6 59 }
                                                                                    
        $sequence_30 = { 8d8c2414080000 51 ffd3 5d 8b35???????? 6a01 }
                                                                                    
        $sequence_31 = { 56 ba00020000 57 8bca 33c0 }
                                                                        
        $sequence_32 = { ff15???????? e8???????? e8???????? 53 ff15???????? 50 ff15???????? }
                                                                                                
    condition:
        7 of them and filesize < 74309632
}

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

7caee178-8b49-4857-8f0e-fca5caced76a

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