MALPEDIA_Win_Jimmy_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 MALPEDIA_Win_Jimmy_Auto: FILE {
  meta:
    description        = "autogenerated rule brought to you by yara-signator"
    author             = "Felix Bilstein - yara-signator at cocacoding dot com"
    id                 = "6665c46a-fce5-5107-8692-d73430db94ca"
    date               = "2023-12-06"
    modified           = "2023-12-08"
    reference          = "https://malpedia.caad.fkie.fraunhofer.de/details/win.jimmy"
    source_url         = "https://github.com/malpedia/signator-rules//blob/fbacfc09b84d53d410385e66a8e56f25016c588a/rules/win.jimmy_auto.yar#L1-L130"
    license_url        = "N/A"
    logic_hash         = "5955b25aaac6bf582c8efb23dc58fc592d4dcf4b96826a166327d6d4b0ee873a"
    score              = 75
    quality            = 75
    tags               = "FILE"
    version            = "1"
    tool               = "yara-signator v0.6.0"
    signator_config    = "callsandjumps;datarefs;binvalue"
    malpedia_rule_date = "20231130"
    malpedia_hash      = "fc8a0e9f343f6d6ded9e7df1a64dac0cc68d7351"
    malpedia_version   = "20230808"
    malpedia_license   = "CC BY-SA 4.0"
    malpedia_sharing   = "TLP:WHITE"

  strings:
    $sequence_0 = { 89 08 eb 11 e8 ?? ?? ?? ?? 89 45 f4 ff 75 f8 e8 ?? ?? ?? ?? 59 }
    $sequence_1 = { 8b 45 08 83 60 2c 00 8b 45 fc c9 c3 55 8b ec }
    $sequence_2 = { 89 81 4c 01 00 00 eb 27 a1 ?? ?? ?? ?? 8b 4d e4 89 88 40 01 00 00 ff 75 e4 }
    $sequence_3 = { ff 75 08 ff 55 fc 59 59 c9 c3 55 }
    $sequence_4 = { 6a 73 58 66 89 45 f2 6a 20 58 66 89 45 f4 6a 25 }
    $sequence_5 = { 8b 45 08 ff 70 2c 8b 45 08 ff 70 24 e8 ?? ?? ?? ?? 59 59 }
    $sequence_6 = { 50 8d 45 c4 50 8b 45 08 83 c0 08 50 6a 00 }
    $sequence_7 = { 85 c0 74 19 8b 45 fc 0f be 00 8b 4d f8 0f be 09 }
    $sequence_8 = { e8 ?? ?? ?? ?? 59 b0 01 c9 c2 08 00 }
    $sequence_9 = { 6a 09 e8 ?? ?? ?? ?? 59 59 89 45 fc ff 75 10 ff 75 0c }

  condition:
    7 of them and filesize < 188416
}

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

5fe205c5-7117-4162-870e-ea2b35e68792

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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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