osx_pirrit_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 osx_pirrit_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/osx.pirrit"
    malpedia_rule_date = "20201014"
    malpedia_hash      = "a7e3bd57eaf12bf3ea29a863c041091ba3af9ac9"
    malpedia_version   = "20201014"
    malpedia_license   = "CC BY-SA 4.0"
    malpedia_sharing   = "TLP:WHITE"
  

  strings:
    $sequence_0  = { 5b 5d ff 25 ?? ?? ?? ?? 8b 43 38 }
                        $sequence_1  = { 48 8d 0d 89 4b 00 00 48 8b 35 ?? ?? ?? ?? }
                        $sequence_2  = { c7 05 ?? ?? ?? ?? 00 00 00 00 48 8d 05 d6 27 00 00 48 89 05 ?? ?? ?? ?? 48 }
                                $sequence_3  = { 89 c6 48 8b 3d ?? ?? ?? ?? 48 8b 35 ?? ?? ?? ?? 4c 8b 3d ?? ?? ?? ?? }
                                    $sequence_4  = { 48 89 45 d8 b0 00 e8 ?? ?? ?? ?? }
                        $sequence_5  = { 48 8b 7f 08 48 8b 15 ?? ?? ?? ?? }
                        $sequence_6  = { 48 8d 05 bd 13 00 00 48 8d 0d 02 0e 00 00 }
                        $sequence_7  = { 48 8b 7d d8 45 84 f6 74 14 48 8d 35 2f 2e 00 00 }
                                    $sequence_8  = { 8d 05 9f 2c 00 00 48 8d 0d b5 2c 00 00 48 }
                        $sequence_9  = { 0f 85 e5 01 00 00 48 8d 3d a7 0b 00 00 e8 ?? ?? ?? ?? 48 }
                            $sequence_10 = { 56 53 50 49 89 fe be 01 00 00 00 e8 ?? ?? ?? ?? }
                                    $sequence_11 = { 8d 35 97 2e 00 00 ba 02 00 00 00 48 89 df e8 ?? ?? ?? ?? 85 c0 }
                                $sequence_12 = { 89 cf 88 85 3f fe ff ff e8 ?? ?? ?? ?? 8a 85 3f fe ff ff a8 01 0f 85 05 00 00 00 e9 ?? ?? ?? ?? }
                                    $sequence_13 = { 48 c7 05 ?? ?? ?? ?? 00 00 00 00 48 8d 05 46 29 00 00 48 89 05 ?? ?? ?? ?? 48 }
                                    $sequence_14 = { 48 0f 45 c8 48 89 0c 24 48 8d 35 49 2c 00 00 }
                                $sequence_15 = { 74 7f eb 1a 48 8d 05 66 2e 00 00 48 89 45 d0 }
              
  condition:
    7 of them and filesize < 169600
}

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

d0e8443f-d1f4-41cb-aceb-56b17ad4d67a

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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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