MALPEDIA_Win_Fatal_Rat_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_Fatal_Rat_Auto: FILE {
  meta:
    description        = "autogenerated rule brought to you by yara-signator"
    author             = "Felix Bilstein - yara-signator at cocacoding dot com"
    id                 = "ad01455e-ebcc-5d76-97a6-8783411925c1"
    date               = "2023-12-06"
    modified           = "2023-12-08"
    reference          = "https://malpedia.caad.fkie.fraunhofer.de/details/win.fatal_rat"
    source_url         = "https://github.com/malpedia/signator-rules//blob/fbacfc09b84d53d410385e66a8e56f25016c588a/rules/win.fatal_rat_auto.yar#L1-L132"
    license_url        = "N/A"
    logic_hash         = "bf12fac2d058bbab9ea0f9b93b84c2577fb8a36680f2394444c1c24a4d7c12b7"
    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 = { 80 7d ff 00 74 2f 8b 4e 10 56 03 4d f4 68 ?? ?? ?? ?? }
    $sequence_1 = { 55 8b ec 8b 45 08 33 d2 3b c2 74 32 8b 48 1c }
    $sequence_2 = { 83 3d ?? ?? ?? ?? 02 75 13 68 ?? ?? ?? ?? 8d 85 1c ff ff ff 50 e8 ?? ?? ?? ?? 59 }
    $sequence_3 = { c6 45 bb 46 c6 45 bc 6f c6 45 bd 72 c6 45 be 6d 88 5d bf ff 15 ?? ?? ?? ?? }
    $sequence_4 = { 8b 7d f8 89 9e 90 00 00 00 80 66 2d 00 8b ce e8 ?? ?? ?? ?? 8b 8e 90 00 00 00 8b 46 14 }
    $sequence_5 = { 48 eb 05 8b 46 2c 2b c1 89 45 f0 8b 45 08 8b 04 85 d0 b4 01 10 }
    $sequence_6 = { c6 85 e0 fd ff ff 2e c6 85 e1 fd ff ff 65 c6 85 e2 fd ff ff 78 c6 85 e3 fd ff ff 65 88 9d e4 fd ff ff c6 45 94 6b c6 45 95 73 }
    $sequence_7 = { 89 81 a4 af 06 00 5d c3 c3 c3 55 8b ec }
    $sequence_8 = { 33 db a5 a5 53 8d 85 20 fe ff ff 6a 2e 50 }
    $sequence_9 = { ff 15 ?? ?? ?? ?? 53 56 50 a3 ?? ?? ?? ?? ff 15 ?? ?? ?? ?? 80 a5 ec fb ff ff 00 }

  condition:
    7 of them and filesize < 344064
}

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

10b66a81-df89-407e-a633-a8ab56db4f99

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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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