MALPEDIA_Win_Portdoor_Auto

YARA detection rule by Felix Bilstein - yara-signator at cocacoding dot com · GPL-2.0

autogenerated rule brought to you by yara-signator

rule MALPEDIA_Win_Portdoor_Auto: FILE {
  meta:
    description        = "autogenerated rule brought to you by yara-signator"
    author             = "Felix Bilstein - yara-signator at cocacoding dot com"
    id                 = "84ef053f-8b45-5899-91c4-5c0973d7e3db"
    date               = "2023-12-06"
    modified           = "2023-12-08"
    reference          = "https://malpedia.caad.fkie.fraunhofer.de/details/win.portdoor"
    source_url         = "https://github.com/malpedia/signator-rules//blob/fbacfc09b84d53d410385e66a8e56f25016c588a/rules/win.portdoor_auto.yar#L1-L124"
    license_url        = "N/A"
    logic_hash         = "23b6dfc496aede71e92bc63441565950d5591602bef8ef2eba1715ff0ea58fc2"
    score              = 75
    quality            = 75
    tags               = "FILE"
    version            = "1"
    tool               = "yara-signator v0.6.0"
    signator_config    = "callsandjumps;datarefs;binvalue"
    malpedia_rule_date = "20231130"
    malpedia_hash      = "fc8a0e9f343f6d6ded9e7df1a64dac0cc68d7351"
    malpedia_version   = "20230808"
    malpedia_license   = "CC BY-SA 4.0"
    malpedia_sharing   = "TLP:WHITE"

  strings:
    $sequence_0 = { 50 e8 ?? ?? ?? ?? 83 f8 ff 89 06 0f 95 c0 eb 2f 80 7e 51 00 }
    $sequence_1 = { 50 8d 85 fc f3 ff ff 50 e8 ?? ?? ?? ?? 8b f0 }
    $sequence_2 = { ff 57 18 89 03 6a 04 59 8d 41 02 33 d2 }
    $sequence_3 = { 89 45 a8 eb 04 83 65 a8 00 8b 45 a8 89 45 90 83 4d fc ff 8b 45 90 }
    $sequence_4 = { 50 8b 85 28 e5 ff ff 0f 94 c1 89 8d 3c e5 ff ff 8b 8d 24 e5 ff ff 8b 04 85 b8 0f 02 10 ff 34 01 }
    $sequence_5 = { 89 42 24 66 89 42 4c 89 42 48 88 42 4e 8a 01 88 04 0b }
    $sequence_6 = { 7e 21 8b 45 0c 6a 00 2b c6 }
    $sequence_7 = { 51 51 8d 45 f8 89 5d f8 }
    $sequence_8 = { e8 ?? ?? ?? ?? 8b f8 b8 ee ff 00 00 59 66 89 07 8b 45 0c 88 5f 02 }
    $sequence_9 = { e8 ?? ?? ?? ?? a1 ?? ?? ?? ?? 33 c5 89 45 fc 53 8b 5d 08 8d 85 fd fb ff ff }

  condition:
    7 of them and filesize < 297984
}

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

bf2a9c5b-d0d6-4fbe-a375-988c30248ab2

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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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