win_tflower_auto

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

Detects win.tflower.

rule win_tflower_auto {

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

    


    strings:
        $sequence_0 = { 42 0fb606 80b838e14f0000 74e9 8a0e }
                                                                        
        $sequence_1 = { 000f 7708 0001 7708 }
                                                            
        $sequence_2 = { 0001 0200 0103 0303 }
                                                            
        $sequence_3 = { 0fb6c9 c1e104 33b1476f4f00 33b9436f4f00 0fb6ca }
                                                                        
        $sequence_4 = { 774c ff2485b05a4700 0fb659ff 49 0fb641ff 49 c1e008 }
                                                                                                
        $sequence_5 = { 001a 0c05 003c0c 05004e0c05 }
                                                            
        $sequence_6 = { 000b 8605???????? 007885 0500788605 }
                                                            
        $sequence_7 = { 0008 7408 0002 7408 }
                                                            
        $sequence_8 = { 8d4fff ff248d6cfc4600 4e c1e818 8806 }
                                                                        
        $sequence_9 = { 0010 740b 0021 740b }
                                                            
        $sequence_10 = { 8bc3 c1e808 0fb6c0 8b0c8d20ed4e00 330c8520f14e00 8bc6 }
                                                                                    
        $sequence_11 = { 0001 7708 00f3 7608 }
                                                            
        $sequence_12 = { c1e918 0fb6c9 c1e104 3391456f4f00 33b9416f4f00 8b4c244c }
                                                                                    
        $sequence_13 = { 0002 7408 00f7 7308 }
                                                            
        $sequence_14 = { 660f28aac07d4b00 660f54e5 660f58fe 660f58fc }
                                                            
        $sequence_15 = { 68???????? ffd6 6a00 6a00 68???????? 68???????? }
                                                                                    
    condition:
        7 of them and filesize < 6578176
}

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

4cc6d34e-2623-4a12-a5c7-b38207bc2a4a

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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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