win_phantomcore_auto

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

Detects win.phantomcore.

rule win_phantomcore_auto {

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

    


    strings:
        $sequence_0 = { 8b5a04 895f04 8b29 395504 743f 3913 7440 }
                                                                                                
        $sequence_1 = { e8???????? 894dcc 8b7d10 8b550c 8b4d08 8965e4 c745f0ffffffff }
                                                                                                
        $sequence_2 = { 50 e8???????? 83c404 85c0 0f8407020000 89c1 83c023 }
                                                                                                
        $sequence_3 = { 8b9610020000 8d4801 81f900100000 724c 8b4afc 83c2fc 29ca }
                                                                                                
        $sequence_4 = { 83c404 e9???????? c745c047d84b00 c745c489ca4b00 c745c88b000000 c745cc27000000 c745d818714b00 }
                                                                                                
        $sequence_5 = { c745dc00000000 eb07 31d2 eb03 8b55e0 8b7508 8b4d0c }
                                                                                                
        $sequence_6 = { b36b e9???????? 89f8 40 bd04000000 bb???????? b263 }
                                                                                                
        $sequence_7 = { c745c870617273 c745cc655f6572 c745cf72726f72 c645d300 c745f001000000 8d45c8 8d4d80 }
                                                                                                
        $sequence_8 = { 8d7d08 8965e4 c745f0ffffffff 8d45e8 c745ec80ae4400 648b0d00000000 894de8 }
                                                                                                
        $sequence_9 = { 8b8660020000 39d8 8b7d08 0f82450d0000 8b4f08 8b39 8b4904 }
                                                                                                
    condition:
        7 of them and filesize < 1840128
}

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

0a754fe0-84c6-41b6-91bf-636c62d0ab83

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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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