win_darkstrat_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_darkstrat_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.darkstrat"
    malpedia_rule_date = "20201014"
    malpedia_hash      = "a7e3bd57eaf12bf3ea29a863c041091ba3af9ac9"
    malpedia_version   = "20201014"
    malpedia_license   = "CC BY-SA 4.0"
    malpedia_sharing   = "TLP:WHITE"
  

  strings:
    $sequence_0 = { 83 ff 0a 7d 22 ff 33 68 ?? ?? ?? ?? 8d 55 e0 8b c7 }
                                $sequence_1 = { e8 ?? ?? ?? ?? 8d 45 f4 50 6a 00 6a 00 6a 00 8b 45 f8 }
                                    $sequence_2 = { 50 b9 01 00 00 00 ba 0a 00 00 00 b0 02 e8 ?? ?? ?? ?? 8b 55 c4 8d 45 fc }
                                    $sequence_3 = { 68 ?? ?? ?? ?? 68 ?? ?? ?? ?? 68 ?? ?? ?? ?? e8 ?? ?? ?? ?? 53 6a 50 68 ?? ?? ?? ?? }
                                    $sequence_4 = { 83 ca ff e8 ?? ?? ?? ?? 50 8d 85 4c fe ff ff ba ?? ?? ?? ?? b9 50 00 00 00 e8 ?? ?? ?? ?? }
                                    $sequence_5 = { 64 ff 30 64 89 20 8b c7 ba ?? ?? ?? ?? e8 ?? ?? ?? ?? 33 d2 b8 0a 00 00 00 }
                                    $sequence_6 = { 53 e8 ?? ?? ?? ?? 8b 06 8b 56 04 03 45 f8 13 55 fc }
                                $sequence_7 = { 6a 00 56 e8 ?? ?? ?? ?? eb 0c 8d 45 d4 50 6a 01 }
                                    $sequence_8 = { 83 e8 30 03 f0 eb 0d 25 ff 00 00 00 83 e8 41 83 c0 0a 03 f0 }
                                    $sequence_9 = { 52 50 8d 55 c4 b8 08 00 00 00 e8 ?? ?? ?? ?? ff 75 c4 68 ?? ?? ?? ?? }
                
  condition:
    7 of them and filesize < 458752
}

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

a9d61ede-e24c-4c1a-81a2-de8dbcd26a3c

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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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