win_n40_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 win_n40_auto {
  meta:
    author             = "Felix Bilstein - yara-signator at cocacoding dot com"
    date               = "2020-10-14"
    version            = "1"
    description        = "autogenerated rule brought to you by yara-signator"
    tool               = "yara-signator v0.5.0"
    signator_config    = "callsandjumps;datarefs;binvalue"
    malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.n40"
    malpedia_rule_date = "20201014"
    malpedia_hash      = "a7e3bd57eaf12bf3ea29a863c041091ba3af9ac9"
    malpedia_version   = "20201014"
    malpedia_license   = "CC BY-SA 4.0"
    malpedia_sharing   = "TLP:WHITE"
  

  strings:
    $sequence_0 = { 89 45 d0 a1 ?? ?? ?? ?? 50 8b 4d d0 33 d2 a1 ?? ?? ?? ?? e8 ?? ?? ?? ?? }
                                    $sequence_1 = { 89 45 ec 8d 55 d4 8b 45 fc 8b 80 f8 03 00 00 e8 ?? ?? ?? ?? 8b 45 d4 89 45 e8 }
                                    $sequence_2 = { 03 c2 05 f3 6f 2e 68 03 45 ac 89 45 d8 8b 45 f4 c1 e8 02 8b 55 f4 }
                                    $sequence_3 = { 8b 45 f8 03 c3 8b 55 fc 0f b6 04 02 24 0f 0f b6 c0 0f b7 04 45 fc 21 e1 02 }
                                    $sequence_4 = { 83 c4 a0 89 55 f8 89 45 fc c6 45 f7 00 33 c0 89 45 dc 68 ?? ?? ?? ?? }
                                    $sequence_5 = { b9 0e 00 00 00 a1 ?? ?? ?? ?? 8b 18 ff 53 10 ba ?? ?? ?? ?? b9 28 00 00 00 a1 ?? ?? ?? ?? }
                                    $sequence_6 = { 8b 45 f4 50 8b 45 f8 50 8b 45 fc 50 ff 55 ec }
                                    $sequence_7 = { ff 52 48 ba f4 01 00 00 a1 ?? ?? ?? ?? e8 ?? ?? ?? ?? 8d 8d 38 fd ff ff ba 1c 00 00 00 8b 45 fc }
                                    $sequence_8 = { 8b 45 fc f6 40 01 20 75 1d 55 8d 55 ec 8b 45 fc e8 ?? ?? ?? ?? }
                                    $sequence_9 = { 74 14 8b 45 dc 0d 00 00 08 00 50 6a ec 8b 45 fc 50 }
                
  condition:
    7 of them and filesize < 19390464
}

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

4cf32024-297f-477a-b2fd-3225f0a35d85

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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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