win_ksl0t_auto

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

Detects win.ksl0t.

rule win_ksl0t_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.ksl0t."
        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.ksl0t"
        malpedia_rule_date = "20260916"
        malpedia_hash = "53a643781c18e08f4a50949af60172d837a0b6f6"
        malpedia_version = "20260917"
        malpedia_license = "CC BY-SA 4.0"
        malpedia_sharing = "TLP:WHITE"

    


    strings:
        $sequence_0 = { 66898424d0040000 488dbc24d2040000 33c0 b906020000 f3aa }
                                                                        
        $sequence_1 = { 894dd8 3bce 732b b81f85eb51 f7e3 c1ea05 6bd264 }
                                                                                                
        $sequence_2 = { 49d1e0 488d9424b0100000 488d0d2eec0000 ff15???????? }
                                                            
        $sequence_3 = { 55 8dac2494f7ffff 81ec6c080000 6afe }
                                                            
        $sequence_4 = { 8d8500080000 50 ff15???????? 897dcc 8d4dcc 51 53 }
                                                                                                
        $sequence_5 = { c684249e02000027 c684249f02000032 c68424a002000023 c68424a102000002 }
                                                            
        $sequence_6 = { 68???????? 68???????? ff15???????? 8935???????? 83c40c 393d???????? }
                                                                                    
        $sequence_7 = { 41b800020000 33d2 488d8c24b0100000 ff15???????? 448b8424b4140000 488d155ac90000 }
                                                                                    
        $sequence_8 = { 488b842420040000 4c899870010000 488d9424e8010000 488b8c24e0000000 ff942418040000 4c8bd8 488b842420040000 }
                                                                                                
        $sequence_9 = { c68424e100000027 888424e2000000 c68424e300000034 889c24e4000000 888424e5000000 c68424e600000018 }
                                                                                    
        $sequence_10 = { 83f819 72f3 33c0 90 308c0400010000 }
                                                                        
        $sequence_11 = { 2bc1 56 57 89442418 }
                                                            
        $sequence_12 = { 6a04 68???????? 68???????? ff15???????? 83c40c e9???????? 6a07 }
                                                                                                
        $sequence_13 = { 488d1505c40000 4881c296000000 41b801000000 488d0db1e60000 }
                                                            
        $sequence_14 = { 83c00c 898424f4080000 0fb705???????? 85c0 7475 488d152adc0000 4883c20c }
                                                                                                
        $sequence_15 = { 4889442458 48837c245800 756e ff15???????? 898424b4140000 41b800020000 }
                                                                                    
    condition:
        7 of them and filesize < 196608
}

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

e25c485d-162f-40cd-9f20-d9c89e108afc

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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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