win_krbanker_auto

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

Detects win.krbanker.

rule win_krbanker_auto {

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

    


    strings:
        $sequence_0 = { f3a5 59 85c9 0f842a000000 50 ad 56 }
                                                                                                
        $sequence_1 = { 8b6a04 8b7104 8d7a08 8b5020 }
                                                            
        $sequence_2 = { 0f8dd6000000 8b44244c 85c0 0f84ca000000 53 }
                                                                        
        $sequence_3 = { 5e 5b c3 d9442410 e8???????? 8ad8 5e }
                                                                                                
        $sequence_4 = { 8945c0 ff75c0 ff75c4 ff75c8 ff75cc }
                                                                        
        $sequence_5 = { 6874000000 6801000000 bb40010000 e8???????? 83c410 8945d0 6801010080 }
                                                                                                
        $sequence_6 = { 8b442410 2bf3 03fb 8bde 8a08 }
                                                                        
        $sequence_7 = { 83ec28 8b44243c 53 55 56 8b500c 8b08 }
                                                                                                
        $sequence_8 = { b8???????? eb11 81f905000080 7509 85c0 }
                                                                        
        $sequence_9 = { 8b5df8 668903 8b5dfc 83c308 895df8 }
                                                                        
    condition:
        7 of them and filesize < 1826816
}

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

c26333d5-8509-4f49-85aa-9d64cc56d7ad

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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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