win_action_rat_auto

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

Detects win.action_rat.

rule win_action_rat_auto {

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

    


    strings:
        $sequence_0 = { 83c404 50 8d4d90 e8???????? 8d8550feffff 50 e8???????? }
                                                                                                
        $sequence_1 = { 03f8 3bf7 7406 c645fa01 eb65 8b55f4 0fbf4224 }
                                                                                                
        $sequence_2 = { 52 8b45dc 50 8b4dd8 51 8b4de4 e8???????? }
                                                                                                
        $sequence_3 = { 894df0 8b4df0 ff15???????? c745fc00000000 8b45f0 c700???????? 8b4df0 }
                                                                                                
        $sequence_4 = { e8???????? 8b5508 52 8b45f8 50 8b4dec e8???????? }
                                                                                                
        $sequence_5 = { 8b4d08 81c1e0010000 51 8b4dfc 81c1e0010000 e8???????? }
                                                                                    
        $sequence_6 = { e8???????? 8a8587fdffff 888586fdffff c645fc00 8d8d88fdffff e8???????? c745fcffffffff }
                                                                                                
        $sequence_7 = { 8982fc000000 8b4df0 33d2 33c0 899100010000 898104010000 8b4df0 }
                                                                                                
        $sequence_8 = { 8855d6 8b4d10 e8???????? 50 8b4dd8 }
                                                                        
        $sequence_9 = { 83c44c 8945f4 8b45f4 8be5 5d c20400 55 }
                                                                                                
    condition:
        7 of them and filesize < 480256
}

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

3850eba2-fbc5-4e57-8eb8-41d0f60ec3b9

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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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