win_unidentified_101_auto

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

Detects win.unidentified_101.

rule win_unidentified_101_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-03-28"
        version = "1"
        description = "Detects win.unidentified_101."
        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.unidentified_101"
        malpedia_rule_date = "20230328"
        malpedia_hash = "9d2d75cef573c1c2d861f5197df8f563b05a305d"
        malpedia_version = "20230407"
        malpedia_license = "CC BY-SA 4.0"
        malpedia_sharing = "TLP:WHITE"

    


    strings:
        $sequence_0 = { c70016000000 e8???????? 83c8ff e9???????? 498bc4 488d0ddb070100 83e03f }
                                                                                                
        $sequence_1 = { 6689842404010000 b865000000 6689842406010000 33c0 6689842408010000 }
                                                                        
        $sequence_2 = { 33c0 b968000000 f3aa 488d842400010000 4889442448 488d842430020000 4889442440 }
                                                                                                
        $sequence_3 = { 4889742410 57 4883ec20 418bf0 4c8d0debb40000 8bda 4c8d05dab40000 }
                                                                                                
        $sequence_4 = { c744243000000000 4c8d4c2430 4c8b442440 8b542468 488b4c2460 }
                                                                        
        $sequence_5 = { c68424e900000065 c68424ea00000057 c68424eb00000000 c644243052 c644243165 c644243261 c644243364 }
                                                                                                
        $sequence_6 = { 428a8c1910e40100 4c2bc0 418b40fc 4d894108 d3e8 41894120 }
                                                                                    
        $sequence_7 = { 48c744242000000000 4c8d8c24c8000000 448b442450 488b542458 488b4c2470 ff15???????? }
                                                                                    
        $sequence_8 = { 41b804010000 488d942400030000 33c9 ff15???????? c744245801000000 e8???????? 833d????????01 }
                                                                                                
        $sequence_9 = { 7528 48833d????????00 741e 488d0dd8450100 e8???????? 85c0 740e }
                                                                                                
    condition:
        7 of them and filesize < 402432
}

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

540f3448-3f7e-4c1b-88cd-bc8750615887

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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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