win_gooseegg_auto

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

Detects win.gooseegg.

rule win_gooseegg_auto {

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

    


    strings:
        $sequence_0 = { eb2e 41b901000000 c645cc01 4c8d45cc c74424200d000000 }
                                                                        
        $sequence_1 = { 488bda 4c8d0d60b10000 8bf9 488d1557b10000 b903000000 4c8d0543b10000 }
                                                                                    
        $sequence_2 = { 85c0 7568 4889742430 8d5002 c744242800010004 448d4007 }
                                                                                    
        $sequence_3 = { 498784f670770100 eb1e 488bc3 498784f670770100 4885c0 7409 }
                                                                                    
        $sequence_4 = { 488d05a6490100 483bd8 7408 488bcb e8???????? 4883c420 }
                                                                                    
        $sequence_5 = { 4c8d0d95b10000 b902000000 4c8d0581b10000 488d1582b10000 e8???????? 8bcb }
                                                                                    
        $sequence_6 = { e9???????? 8a06 4c8d057163ffff 4b8b8ce030790100 ffc3 }
                                                                        
        $sequence_7 = { 4c8d2dc6fd0000 448bf3 498bc5 8d6b01 3938 0f844e010000 4403f5 }
                                                                                                
        $sequence_8 = { 83c8ff f00fc101 83f801 751f 488b0d???????? 488d1dc9210100 483bcb }
                                                                                                
        $sequence_9 = { 498bf8 8bf2 4c8d0d897a0000 488be9 4c8d05777a0000 488d15787a0000 }
                                                                                    
    condition:
        7 of them and filesize < 217088
}

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

668a5c23-52d3-45f8-81be-eb721b1474cd

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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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