win_overlord_auto

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

Detects win.overlord.

rule win_overlord_auto {

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

    


    strings:
        $sequence_0 = { e9???????? 31ff e8???????? 8b5c2474 e9???????? 894500 400fb6ff }
                                                                                                
        $sequence_1 = { ffd1 b932000000 4889c7 4889de 31c0 488d1d6fc84e00 0f1f00 }
                                                                                                
        $sequence_2 = { 75e3 4889442418 488d052f834200 e8???????? 4889c1 488b442418 6690 }
                                                                                                
        $sequence_3 = { e8???????? 488d1571bf2c00 483910 7506 488b7008 eb06 31f6 }
                                                                                                
        $sequence_4 = { e8???????? eb05 83f902 751c 90 b9ffffffff 488d159113a800 }
                                                                                                
        $sequence_5 = { 8b8c24b0000000 488b9180010000 e8???????? 488bb42488000000 498933 49894308 49895310 }
                                                                                                
        $sequence_6 = { f30f6f51f0 f30f6f71f0 f3450f6f40c0 66410fdbcd 66410fdbd5 66440f6f3424 660f67d9 }
                                                                                                
        $sequence_7 = { e8???????? 4c8b9c2460010000 4d8b4b18 4c8b9c2400010000 4d0fafcb 4c01d9 4d01dc }
                                                                                                
        $sequence_8 = { f30f2cd0 90 eb62 488d3537152a00 4839f2 754e 418b10 }
                                                                                                
        $sequence_9 = { ffd6 488b8ba8020000 ffd6 488b8b50020000 ffd6 488d4378 48394370 }
                                                                                                
    condition:
        7 of them and filesize < 91286528
}

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

e1ad5fe1-023b-47cd-96a2-01f3a0cf1af9

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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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