MALPEDIA_Win_Vobfus_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_Vobfus_Auto: FILE {
  meta:
    description        = "autogenerated rule brought to you by yara-signator"
    author             = "Felix Bilstein - yara-signator at cocacoding dot com"
    id                 = "379cd9d3-d698-58d1-90c1-aa0d12f74cc4"
    date               = "2023-12-06"
    modified           = "2023-12-08"
    reference          = "https://malpedia.caad.fkie.fraunhofer.de/details/win.vobfus"
    source_url         = "https://github.com/malpedia/signator-rules//blob/fbacfc09b84d53d410385e66a8e56f25016c588a/rules/win.vobfus_auto.yar#L1-L221"
    license_url        = "N/A"
    logic_hash         = "87942ff8c467cfeb6529bdba1fb2a14574a28472aae2c0f0acabf5e6455fc919"
    score              = 75
    quality            = 73
    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  = { 8b 55 08 8b 92 e8 00 00 00 8b 82 84 1d 00 00 50 50 8b 10 }
    $sequence_1  = { 8b 55 08 8b 92 e8 00 00 00 8b 82 5c 1e 00 00 50 }
    $sequence_2  = { 8b ec 8b 55 08 8b 92 e8 00 00 00 8b 82 c8 15 00 00 }
    $sequence_3  = { 8b 82 20 00 00 00 50 50 8b 10 ff 52 04 58 }
    $sequence_4  = { 8b 55 08 8b 92 e8 00 00 00 8b 82 00 08 00 00 50 }
    $sequence_5  = { 8b 55 08 8b 92 e8 00 00 00 8b 82 b4 23 00 00 50 }
    $sequence_6  = { 8b 55 08 8b 92 e8 00 00 00 8b 82 d0 13 00 00 50 }
    $sequence_7  = { 8b 55 08 8b 92 e8 00 00 00 8b 82 9c 0e 00 00 50 }
    $sequence_8  = { f3 ed eb f2 ed ec }
    $sequence_9  = { ec f2 ed ec f2 ed ec f3 ed }
    $sequence_10 = { f2 e8 fa e6 d5 f6 d2 b5 f2 bb 8f f3 ae 73 f3 aa 5c f6 ac 4f f8 b5 4f fb }
    $sequence_11 = { 80 18 00 08 08 00 06 34 01 41 06 }
    $sequence_12 = { 7c c8 dc 7a cd e2 91 d2 e8 }
    $sequence_13 = { 86 31 96 0a 7f 25 7a 43 92 9a fc 9e 57 80 45 1f }
    $sequence_14 = { 0c 38 a9 5b ed b2 e5 75 9e 3a 9b 42 3c eb 9d 65 be 2d af ff cd 36 24 e4 6b ee 88 }
    $sequence_15 = { 4b ce 8c a4 b1 1e 13 b7 93 73 aa fa }
    $sequence_16 = { 48 00 08 78 ff 0d 50 00 49 00 3e 3c ff 46 }
    $sequence_17 = { 5c f6 ac 4f f8 b5 4f fb c0 58 fc ca 61 }
    $sequence_18 = { 46 14 ff 04 70 fe 0a }
    $sequence_19 = { e7 52 47 62 54 03 a7 78 f5 06 95 }
    $sequence_20 = { 6c 74 ff 80 18 00 08 08 }
    $sequence_21 = { b9 09 df d1 8c 9d 74 54 2b cd 8a b4 11 74 63 37 ed 80 ab 93 1e 2e 5e 88 }
    $sequence_22 = { c8 ed 94 59 ef 60 22 6a a3 60 89 07 6b dd 97 }

  condition:
    7 of them and filesize < 409600
}

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

bc9c1195-639c-4b3d-b3a3-c09f373d2cb8

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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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