MALPEDIA_Win_M0Yv_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_M0Yv_Auto: FILE {
  meta:
    description        = "autogenerated rule brought to you by yara-signator"
    author             = "Felix Bilstein - yara-signator at cocacoding dot com"
    id                 = "13583ad1-2b04-58e4-9f81-2e107221c7c3"
    date               = "2023-12-06"
    modified           = "2023-12-08"
    reference          = "https://malpedia.caad.fkie.fraunhofer.de/details/win.m0yv"
    source_url         = "https://github.com/malpedia/signator-rules//blob/fbacfc09b84d53d410385e66a8e56f25016c588a/rules/win.m0yv_auto.yar#L1-L126"
    license_url        = "N/A"
    logic_hash         = "885921d8c153e05a9fb6cddfe964abb6a41c6e3fc24a745c88fdae391a38b5ef"
    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 = { 49 0f af f8 4d 89 c3 49 01 ff 4c 8b 14 24 49 0f af d2 48 03 94 24 b8 00 00 00 4c 89 ef }
    $sequence_1 = { 72 e7 48 89 f9 48 89 da e8 ?? ?? ?? ?? 48 c7 47 48 00 00 00 00 31 c0 66 90 }
    $sequence_2 = { f6 c2 01 0f 84 e3 00 00 00 41 83 fb 66 77 5c 74 4e }
    $sequence_3 = { 48 89 fa e8 ?? ?? ?? ?? 48 89 f9 48 89 fa e8 ?? ?? ?? ?? 4c 89 f1 }
    $sequence_4 = { 29 e8 48 8b ac 24 a8 00 00 00 89 45 00 89 55 04 44 89 5d 08 }
    $sequence_5 = { 49 0f af c6 48 01 c2 48 89 94 24 40 01 00 00 4c 89 84 24 88 00 00 00 4c 89 c0 48 0f af c1 }
    $sequence_6 = { 4f 03 7c e5 38 4c 21 df 4c 31 d7 4e 03 bc e4 98 00 00 00 48 31 c1 49 01 ff 4c 89 c8 }
    $sequence_7 = { 2b 6a 24 44 89 01 44 89 49 04 44 89 51 08 44 89 59 0c 44 89 71 10 89 71 14 }
    $sequence_8 = { 48 83 ec 28 e8 ?? ?? ?? ?? 48 85 c0 74 09 48 8b 40 10 }
    $sequence_9 = { c1 e8 02 41 22 c2 41 88 40 41 8b c2 83 e0 03 8a 04 81 49 8b c8 }

  condition:
    7 of them and filesize < 779264
}

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

b8c7a4b1-2374-4d73-99fc-0812353fb403

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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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