win_upatre_auto

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

Detects win.upatre.

rule win_upatre_auto {

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

    


    strings:
        $sequence_0 = { 33c0 aa b404 895d98 8bfb 03d8 }
                                                                                    
        $sequence_1 = { ebf5 8b7594 33c9 66ad 6685c0 7404 66ab }
                                                                                                
        $sequence_2 = { 8945d0 03c1 8945fc 8bd8 03c1 8bf8 }
                                                                                    
        $sequence_3 = { 8b7df4 33c0 b02f 66ab 8b45a8 }
                                                                        
        $sequence_4 = { e9???????? 8d4590 50 6a40 }
                                                            
        $sequence_5 = { ad 0430 66ab 81c60e010000 ac 3c01 740c }
                                                                                                
        $sequence_6 = { 66ab b02f 66ab 8bc1 0430 }
                                                                        
        $sequence_7 = { 7409 66ab 41 84c0 75f4 ebed 33c0 }
                                                                                                
        $sequence_8 = { 3bd0 7508 8b4dd4 894df4 eb0e }
                                                                        
        $sequence_9 = { 741b e0d6 b454 d2ea 54 b2f2 37 }
                                                                                                
        $sequence_10 = { 894dfc c645bc6a c645bd09 c645c46a c645c501 c645c3e8 c645cfc3 }
                                                                                                
        $sequence_11 = { 83c404 0fb7c0 83f805 7514 8b4df8 }
                                                                        
        $sequence_12 = { e8???????? 8b55d0 52 e8???????? e9???????? 8b4514 8b4de8 }
                                                                                                
        $sequence_13 = { 668b4508 668945ec 0fb74dec 81f9007d0000 }
                                                            
        $sequence_14 = { 8b510c 52 e8???????? 83c404 0fb7c0 83f803 7534 }
                                                                                                
        $sequence_15 = { eb2b 8b55f4 8b420c 50 e8???????? 83c404 0fb7c8 }
                                                                                                
    condition:
        7 of them and filesize < 294912
}

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

014a8553-c09d-4301-8910-8e1405cbffe8

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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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