win_hamweq_auto

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

Detects win.hamweq.

rule win_hamweq_auto {

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

    


    strings:
        $sequence_0 = { c745fc01000000 eb0a 83fffc 7424 83fffb 741f }
                                                                                    
        $sequence_1 = { 8b06 ff7148 8d8de0fdffff 51 }
                                                            
        $sequence_2 = { 837c910800 8d449108 894514 0f8438010000 837c910c00 }
                                                                        
        $sequence_3 = { 0f84d6040000 8d4de4 51 ff75fc 6879204000 }
                                                                        
        $sequence_4 = { 8b4e08 8b06 ffb180010000 8d8dfcfeffff 51 ff5048 8b06 }
                                                                                                
        $sequence_5 = { 8d4de4 51 ff75fc 6842254000 }
                                                            
        $sequence_6 = { 7ccc 83c604 8bc6 833e00 }
                                                            
        $sequence_7 = { e9???????? 8b4e08 8b06 ffb188000000 ff33 }
                                                                        
        $sequence_8 = { 8b06 57 e9???????? 837de800 }
                                                            
        $sequence_9 = { 57 51 ff5048 8b06 }
                                                            
    condition:
        7 of them and filesize < 24576
}

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

e87d06d7-0d86-4758-8a81-2a72216bb23a

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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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