MALPEDIA_Win_Cmsbrute_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_Cmsbrute_Auto: FILE {
  meta:
    description        = "autogenerated rule brought to you by yara-signator"
    author             = "Felix Bilstein - yara-signator at cocacoding dot com"
    id                 = "8f79cbd4-e913-5f2c-8c88-b934c5aa8f71"
    date               = "2023-12-06"
    modified           = "2023-12-08"
    reference          = "https://malpedia.caad.fkie.fraunhofer.de/details/win.cmsbrute"
    source_url         = "https://github.com/malpedia/signator-rules//blob/fbacfc09b84d53d410385e66a8e56f25016c588a/rules/win.cmsbrute_auto.yar#L1-L134"
    license_url        = "N/A"
    logic_hash         = "9b2fd3bf8cbe0036d7312658e08a3f69e7f5e49973eb02bc9f177311ac61fa60"
    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 = { ff 70 04 51 ff 75 10 8b 4d 08 ff 75 0c 56 e8 ?? ?? ?? ?? }
    $sequence_1 = { e8 ?? ?? ?? ?? ff 4d e0 8b de 75 e4 8b 75 d8 83 27 00 6a 00 }
    $sequence_2 = { ff b0 68 01 00 00 ff 15 ?? ?? ?? ?? 8b 06 83 a0 68 01 00 00 00 8b 44 24 18 59 59 }
    $sequence_3 = { eb 0f e8 ?? ?? ?? ?? 59 50 8d 75 b4 e8 ?? ?? ?? ?? 59 }
    $sequence_4 = { eb 02 8b 01 39 45 fc 0f 8d 8a 00 00 00 8b 45 fc e8 ?? ?? ?? ?? 8b f0 }
    $sequence_5 = { ff 75 c4 8b 4d cc ff 75 d4 8b d8 0f b7 46 3e 50 53 }
    $sequence_6 = { eb 02 33 ff 8b b5 9c fd ff ff 51 e8 ?? ?? ?? ?? 59 85 ff }
    $sequence_7 = { ff 75 e4 57 e8 ?? ?? ?? ?? 83 c4 14 85 c0 74 25 8b f7 }
    $sequence_8 = { ff 74 24 30 e8 ?? ?? ?? ?? 89 44 24 30 8b 43 04 83 78 04 1b 8b 30 8b 78 08 }
    $sequence_9 = { ff 15 ?? ?? ?? ?? 89 45 cc 8b 35 ?? ?? ?? ?? 83 cf ff 3b df 74 03 53 }

  condition:
    7 of them and filesize < 5275648
}

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

42165e84-67b2-4402-8057-268bb4523436

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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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