MALPEDIA_Win_Grimplant_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_Grimplant_Auto: FILE {
  meta:
    description        = "autogenerated rule brought to you by yara-signator"
    author             = "Felix Bilstein - yara-signator at cocacoding dot com"
    id                 = "c3eab5e9-e64a-5697-878f-14199bbf7239"
    date               = "2023-12-06"
    modified           = "2023-12-08"
    reference          = "https://malpedia.caad.fkie.fraunhofer.de/details/win.grimplant"
    source_url         = "https://github.com/malpedia/signator-rules//blob/fbacfc09b84d53d410385e66a8e56f25016c588a/rules/win.grimplant_auto.yar#L1-L134"
    license_url        = "N/A"
    logic_hash         = "eec64e00f45245d4dee8d091e0d2ebea0088235a6d441087ed38c039f05955af"
    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 = { e9 ?? ?? ?? ?? 3c 08 74 65 eb 15 3c 0e 0f 8f f5 00 00 00 90 }
    $sequence_1 = { ff d2 eb 3d 48 8b 4c 24 28 48 8b 91 d0 00 00 00 48 8b 44 24 38 ff d2 48 85 c0 }
    $sequence_2 = { eb 1f 48 8d b8 48 6a 01 00 48 8d 15 ac 5c 50 00 e8 ?? ?? ?? ?? 48 8d b8 50 6a 01 00 e8 ?? ?? ?? ?? 44 0f 11 b8 58 6a 01 00 }
    $sequence_3 = { ff d2 b9 14 00 00 00 48 89 c7 48 89 de 31 c0 48 8d 1d a6 51 42 00 e8 ?? ?? ?? ?? }
    $sequence_4 = { ff d1 48 83 f8 05 0f 85 f2 10 00 00 0f 10 05 ?? ?? ?? ?? 0f 11 44 24 78 0f 10 05 ?? ?? ?? ?? 0f 11 84 24 88 00 00 00 }
    $sequence_5 = { 74 6c 4c 8b 40 18 49 ff c0 4c 39 40 20 7d 5f 48 8d 05 a3 ab 1d 00 0f 1f 00 }
    $sequence_6 = { 90 48 8d 05 cb d2 8b 00 e8 ?? ?? ?? ?? 48 8b 44 24 70 4c 8b 44 24 40 4c 8b 4c 24 58 e9 ?? ?? ?? ?? }
    $sequence_7 = { c6 40 18 01 44 0f 11 3c 24 48 c7 44 24 10 00 00 00 00 48 8b 9c 24 80 00 00 00 48 89 c1 48 8b bc 24 a0 00 00 00 48 8b b4 24 a8 00 00 00 }
    $sequence_8 = { 90 48 8d 05 67 83 90 00 e8 ?? ?? ?? ?? 8b 54 24 40 44 8b 84 24 b0 00 00 00 44 8b 4c 24 44 89 d0 }
    $sequence_9 = { eb 0f 48 89 c7 48 8d 15 9c eb 13 00 e8 ?? ?? ?? ?? 48 8d 05 88 67 0a 00 48 8b 5c 24 48 b9 06 00 00 00 }

  condition:
    7 of them and filesize < 19940352
}

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

7ae6b4cf-a195-4be6-9715-66c201167227

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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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