MALPEDIA_Win_Lorenz_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_Lorenz_Auto: FILE {
  meta:
    description        = "autogenerated rule brought to you by yara-signator"
    author             = "Felix Bilstein - yara-signator at cocacoding dot com"
    id                 = "10a95bcc-414b-5fdc-ba6f-70234a4a7232"
    date               = "2023-12-06"
    modified           = "2023-12-08"
    reference          = "https://malpedia.caad.fkie.fraunhofer.de/details/win.lorenz"
    source_url         = "https://github.com/malpedia/signator-rules//blob/fbacfc09b84d53d410385e66a8e56f25016c588a/rules/win.lorenz_auto.yar#L1-L134"
    license_url        = "N/A"
    logic_hash         = "b3150a02c51834520c50a8abe1ab216fe79abbf33e7abc68b4a01a1cc4acdf52"
    score              = 60
    quality            = 45
    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 = { 8b 4d e8 e8 ?? ?? ?? ?? 89 85 68 ff ff ff eb 15 8b 55 fc 8b 42 58 8b 4d f4 }
    $sequence_1 = { c6 41 29 01 83 7d f8 00 74 23 8b 55 fc c7 42 0c 00 00 00 00 8b 45 f8 8b 08 }
    $sequence_2 = { 8b 88 00 08 00 00 e8 ?? ?? ?? ?? 89 45 f0 8b 4d fc 8b 89 00 08 00 00 e8 ?? ?? ?? ?? 89 45 e0 }
    $sequence_3 = { 8b 55 fc 8b 42 14 8b 08 83 e9 01 8b 55 fc 8b 42 14 89 08 }
    $sequence_4 = { ff 55 e4 8b 55 f0 89 82 8c 00 00 00 8b 45 f0 8b 88 8c 00 00 00 51 8b 4d ec }
    $sequence_5 = { 8b 4d fc e8 ?? ?? ?? ?? 85 c0 74 26 68 ?? ?? ?? ?? 68 ?? ?? ?? ?? 6a 00 }
    $sequence_6 = { 8b 4d fc e8 ?? ?? ?? ?? 8b c8 e8 ?? ?? ?? ?? 0f b6 c8 85 c9 74 60 }
    $sequence_7 = { 8b 4d f8 83 e9 04 e8 ?? ?? ?? ?? 8b c8 e8 ?? ?? ?? ?? 0f b6 c8 85 c9 }
    $sequence_8 = { 50 e8 ?? ?? ?? ?? 89 45 d8 83 7d d8 00 0f 84 45 01 00 00 8b 4d d8 d1 e1 }
    $sequence_9 = { 8b 4d ec 8b 11 89 50 04 8b 45 ec 89 45 e8 8b 4d e8 51 }

  condition:
    7 of them and filesize < 2254848
}

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

37e1fd3b-de92-40d5-a98e-4b5a844ac8f1

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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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