win_hesperbot_auto

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

Detects win.hesperbot.

rule win_hesperbot_auto {

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

    


    strings:
        $sequence_0 = { 8d048504000000 8d5e02 8b7508 50 d1ff e8???????? 59 }
                                                                                                
        $sequence_1 = { 7409 8bcb e8???????? 8bf8 8d4701 3bd0 7624 }
                                                                                                
        $sequence_2 = { 837e4878 72f0 8b4e40 8b4644 8bd0 895c242c 668bd9 }
                                                                                                
        $sequence_3 = { 40 3bd6 7420 57 837a0802 8b3a 750c }
                                                                                                
        $sequence_4 = { 51 894004 8900 e8???????? 33c0 }
                                                                        
        $sequence_5 = { 0bee 8b742418 33c5 8b6c241c 0faceb0e 33ff 0bfb }
                                                                                                
        $sequence_6 = { 85c0 7417 837dfc01 750a 33c9 803801 0f94c1 }
                                                                                                
        $sequence_7 = { 83f8ff 7505 e8???????? 8d55fc 52 6a00 }
                                                                                    
        $sequence_8 = { 50 50 8945fc 8945f4 8945f8 8d45fc }
                                                                                    
        $sequence_9 = { 894a04 e8???????? 33db 59 43 57 ff15???????? }
                                                                                                
    condition:
        7 of them and filesize < 188416
}

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

6267b710-3abf-4ded-8e1e-d669fbb7b4c6

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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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