win_kronos_auto

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

Detects win.kronos.

rule win_kronos_auto {

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

    


    strings:
        $sequence_0 = { 3bc6 723e 8b4d08 53 56 e8???????? 8b0f }
                                                                                                
        $sequence_1 = { 03c0 2bf8 8bcf b801000000 d3e0 8b4dfc 48 }
                                                                                                
        $sequence_2 = { 3bc6 7407 8b0b 894810 }
                                                            
        $sequence_3 = { 03c0 50 ff7518 ff7514 }
                                                            
        $sequence_4 = { 03c0 50 ff7514 ff7510 ff75fc }
                                                                        
        $sequence_5 = { 3bc6 7318 8bcf e8???????? 2bf0 56 8d85c0efffff }
                                                                                                
        $sequence_6 = { 3bc6 740c 6a25 e8???????? 59 }
                                                                        
        $sequence_7 = { 2375f8 8975c4 3b75d0 0f84fafeffff }
                                                            
    condition:
        7 of them and filesize < 1302528
}

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

6eab844d-eb98-4d38-bddf-4cd53e7de772

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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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