MALPEDIA_Win_Derusbi_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_Derusbi_Auto: FILE {
  meta:
    description        = "autogenerated rule brought to you by yara-signator"
    author             = "Felix Bilstein - yara-signator at cocacoding dot com"
    id                 = "7e17bc22-c095-50d8-a4c2-1bf339697e7b"
    date               = "2023-12-06"
    modified           = "2023-12-08"
    reference          = "https://malpedia.caad.fkie.fraunhofer.de/details/win.derusbi"
    source_url         = "https://github.com/malpedia/signator-rules//blob/fbacfc09b84d53d410385e66a8e56f25016c588a/rules/win.derusbi_auto.yar#L1-L133"
    license_url        = "N/A"
    logic_hash         = "325459f5183ff3b300e1f181ae53b4a2cb1c12e04a563b27e6a394d452c11ac4"
    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 = { 8b 81 9c 00 00 00 8d 4d e8 51 8d 4d ec 51 ff b0 0c 01 00 00 c7 45 e8 10 00 00 00 }
    $sequence_1 = { 8d 55 ec e8 ?? ?? ?? ?? 8d 4f 08 56 8d 55 f3 e8 ?? ?? ?? ?? 59 }
    $sequence_2 = { 89 13 ff 15 ?? ?? ?? ?? 83 c4 0c e8 ?? ?? ?? ?? b3 01 57 ff 15 ?? ?? ?? ?? }
    $sequence_3 = { 33 c5 89 45 f8 8b 45 08 66 83 38 00 53 56 57 }
    $sequence_4 = { 89 45 f8 8b 45 08 56 57 50 8d 8d e4 fb ff ff 89 95 90 f9 ff ff }
    $sequence_5 = { 64 a3 00 00 00 00 8b 5d 0c 8b 45 08 89 4c 24 14 89 44 24 18 85 db 0f 84 57 05 00 00 }
    $sequence_6 = { 50 ff d6 b9 03 01 00 00 2b c8 51 8d 85 ec fd ff ff 68 ?? ?? ?? ?? }
    $sequence_7 = { 56 56 56 6a 03 56 68 ?? ?? ?? ?? 68 00 04 00 00 }
    $sequence_8 = { ff d3 50 57 ff b5 f8 fb ff ff ff 15 ?? ?? ?? ?? 83 c4 10 85 c0 }
    $sequence_9 = { ff b5 d4 fd ff ff 89 8d b8 fd ff ff ff b5 ec fd ff ff ff b5 f0 fd ff ff ff 15 ?? ?? ?? ?? 3b c7 }

  condition:
    7 of them and filesize < 360448
}

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

493e296d-5b39-47e3-b16c-255af0465fc2

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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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