win_emudbot_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_emudbot_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.emudbot"
    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 bd 70 ff ff ff 05 75 17 83 bd 74 ff ff ff 01 75 0e 8b c3 ba ?? ?? ?? ?? }
                                $sequence_1 = { e8 ?? ?? ?? ?? 89 7d cc 83 ec 04 89 5c 24 08 89 7c 24 04 8b 9e 44 10 00 00 89 1c 24 }
                                    $sequence_2 = { 64 89 20 8d 45 fc 8b 4d fc ba ?? ?? ?? ?? e8 ?? ?? ?? ?? }
                            $sequence_3 = { e8 ?? ?? ?? ?? eb 78 e8 ?? ?? ?? ?? 8b d0 8d 45 e8 e8 ?? ?? ?? ?? }
                                $sequence_4 = { c1 ea 0b 33 c2 8b d0 c1 e2 0f 03 c2 }
                            $sequence_5 = { 8b d0 42 8d 85 fb fe ff ff b9 04 01 00 00 e8 ?? ?? ?? ?? 8b c6 8b 15 ?? ?? ?? ?? }
                                    $sequence_6 = { 8b ca 89 04 24 8b c1 33 d2 52 50 8d 44 24 08 }
                                    $sequence_7 = { 6a 01 6a 01 50 e8 ?? ?? ?? ?? 8b d8 85 db 0f 86 89 00 00 00 }
                                    $sequence_8 = { c6 45 fc 13 8b 55 0c 89 4c 24 08 88 45 fd 8b 45 08 89 55 f8 }
                                $sequence_9 = { 8d 5d d8 89 44 24 04 8b be 40 10 00 00 be 01 00 00 00 89 3c 24 e8 ?? ?? ?? ?? }
              
  condition:
    7 of them and filesize < 221184
}

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

2358da48-de6a-4cea-b8d7-9e2ced546c2a

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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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