win_metamorfo_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_metamorfo_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.metamorfo"
    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 ec 8b 45 fc 8b 40 44 03 45 ec 8b 55 fc 8b 52 54 8d 04 82 }
                                    $sequence_1 = { e8 ?? ?? ?? ?? 68 83 7f 00 00 8b 45 dc 50 e8 ?? ?? ?? ?? 68 84 7f 00 00 8b 45 d8 }
                                    $sequence_2 = { c7 86 88 00 00 00 ff ff ff ff c7 86 8c 00 00 00 ff ff ff ff 33 c0 89 86 98 00 00 00 33 c0 89 86 a0 00 00 00 33 c0 }
                                    $sequence_3 = { d9 18 9b 8b 45 f8 d9 e8 d8 68 04 8b 45 f8 d9 58 04 }
                                    $sequence_4 = { c1 ea 08 8b 45 b0 88 10 47 43 4e 0f 85 61 ff ff ff }
                                    $sequence_5 = { e8 ?? ?? ?? ?? 84 c0 74 06 8b b7 a4 02 00 00 8b c6 5f 5e }
                                    $sequence_6 = { e8 ?? ?? ?? ?? 0f b6 40 14 2c 01 72 0d fe c8 0f 84 d6 01 00 00 e9 ?? ?? ?? ?? }
                                    $sequence_7 = { a3 ?? ?? ?? ?? 8b 45 f8 e8 ?? ?? ?? ?? b8 ?? ?? ?? ?? e8 ?? ?? ?? ?? b8 ?? ?? ?? ?? e8 ?? ?? ?? ?? }
                                    $sequence_8 = { ff b5 40 fa ff ff 68 ?? ?? ?? ?? ff 35 ?? ?? ?? ?? 68 ?? ?? ?? ?? ff 35 ?? ?? ?? ?? 68 ?? ?? ?? ?? 8d 85 50 fa ff ff }
                                    $sequence_9 = { ff 52 30 48 89 45 ec 8b c3 8b 10 ff 52 24 8b 55 b4 }
                
  condition:
    7 of them and filesize < 20349952
}

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

ee011389-6a11-4f55-83d6-d890dc1690bf

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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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