win_padcrypt_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_padcrypt_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.padcrypt"
    malpedia_rule_date = "20201014"
    malpedia_hash      = "a7e3bd57eaf12bf3ea29a863c041091ba3af9ac9"
    malpedia_version   = "20201014"
    malpedia_license   = "CC BY-SA 4.0"
    malpedia_sharing   = "TLP:WHITE"
  

  strings:
    $sequence_0 = { 5e 4d 34 65 f7 b4 76 5c d8 18 5c }
                        $sequence_1 = { 77 20 32 71 86 56 6d }
                        $sequence_2 = { 43 51 81 12 68 51 fc 92 5f ec }
                            $sequence_3 = { 1b 89 91 d7 72 52 1a 99 2d c5 10 53 2e a8 73 57 }
                        $sequence_4 = { a5 e4 37 1a 82 6b ac 35 7c 1b 02 5b }
                            $sequence_5 = { 90 41 1b 89 91 d7 72 52 1a 99 2d c5 10 53 2e a8 73 57 }
                                $sequence_6 = { 5e 4d 34 65 f7 b4 76 5c d8 18 5c 06 55 6c }
                                    $sequence_7 = { f7 b4 76 5c d8 18 5c 06 55 6c 08 1a 81 00 46 62 c4 31 }
                                $sequence_8 = { c5 88 d0 91 68 a2 07 1d 61 f0 68 90 54 }
                        $sequence_9 = { 24 e1 29 45 e4 80 1e b1 09 97 f0 64 52 d6 5e }
            
  condition:
    7 of them and filesize < 1892352
}

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

664df3c4-70b1-4db3-9fe5-a46757e3338f

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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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