MALPEDIA_Win_Gozi_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_Gozi_Auto: FILE {
  meta:
    description        = "autogenerated rule brought to you by yara-signator"
    author             = "Felix Bilstein - yara-signator at cocacoding dot com"
    id                 = "4c65f4c6-680c-5313-afa1-f0c350a0bb9e"
    date               = "2023-12-06"
    modified           = "2023-12-08"
    reference          = "https://malpedia.caad.fkie.fraunhofer.de/details/win.gozi"
    source_url         = "https://github.com/malpedia/signator-rules//blob/fbacfc09b84d53d410385e66a8e56f25016c588a/rules/win.gozi_auto.yar#L1-L297"
    license_url        = "N/A"
    logic_hash         = "d1afd0d2426cb263c17dc36f11639d4b538234ba95ec55283f83783334fcf5d3"
    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 4d fc f3 a4 b0 e9 aa }
    $sequence_1  = { ee 7f 7b 36 11 0b 33 74 55 71 de 7e 75 cd 18 4a }
    $sequence_2  = { 33 27 72 e7 3e bb 4a 68 d9 47 d9 3e 25 72 96 bc 4a 1b 6b 61 9f }
    $sequence_3  = { e8 ?? ?? ?? ?? 0b c0 75 22 6a 01 6a 00 }
    $sequence_4  = { 2b fb 8b 55 18 8b 12 6a 00 }
    $sequence_5  = { 4e b6 4e 0f c0 d6 69 d5 92 0d 9c ef }
    $sequence_6  = { 0f ad ce 80 ee de c0 ca 12 2a f4 8a f4 }
    $sequence_7  = { 89 45 98 50 e8 ?? ?? ?? ?? 8b 46 50 8b 7c 07 04 }
    $sequence_8  = { 83 c1 01 89 4d f4 8b 55 ec 83 ea 02 39 55 f4 0f 8d 45 04 00 00 }
    $sequence_9  = { 94 6e 8e e1 54 }
    $sequence_10 = { 75 16 c7 85 54 ff ff ff 06 00 00 00 c7 85 58 ff ff ff 00 00 00 00 eb 14 }
    $sequence_11 = { bf ?? ?? ?? ?? 8b df c7 07 47 49 46 38 66 c7 47 04 37 61 83 c7 06 8b 45 0c }
    $sequence_12 = { c9 50 0c 73 0e 96 3b 53 75 }
    $sequence_13 = { ff d7 03 f0 56 53 33 f6 56 }
    $sequence_14 = { ad b7 10 2d c7 ce 5b bb d6 b6 c6 }
    $sequence_15 = { ff 75 e4 ff d0 c3 6a 68 68 ?? ?? ?? ?? e8 ?? ?? ?? ?? }
    $sequence_16 = { 0f 82 29 fe ff ff 5f 5e 5b c9 c2 10 00 }
    $sequence_17 = { c9 c2 08 00 6a 00 8d 87 95 0c 00 00 }
    $sequence_18 = { 84 c1 0f b3 ea f6 c1 ba 0f ce }
    $sequence_19 = { 96 3b 53 75 60 d3 e0 90 48 }
    $sequence_20 = { 69 d5 ca 65 94 07 f6 de c6 45 ff 61 a1 ?? ?? ?? ?? 8b 0d ?? ?? ?? ?? 6a 00 }
    $sequence_21 = { 83 c1 01 89 4d 90 0f b7 55 e4 52 8b 45 90 }
    $sequence_22 = { b8 7e 8d a6 38 e0 22 3a 56 b9 03 68 90 2b 02 9a 10 2a 67 15 fb 53 }
    $sequence_23 = { dc 6f 1b 95 bf 63 36 29 a8 02 73 8f }
    $sequence_24 = { 83 bd 54 ff ff ff 03 7c 0a c7 85 54 ff ff ff 00 00 00 00 eb 95 33 c0 8b 55 f4 }
    $sequence_25 = { 0f be 44 15 ec 8b 8d 4c ff ff ff 03 8d 58 ff ff ff 0f be 11 33 d0 8b 85 4c ff ff ff }
    $sequence_26 = { 41 4e 75 ea 5e }
    $sequence_27 = { 0f 84 47 01 00 00 83 f8 ff 0f 84 3e 01 00 00 68 20 00 cc 00 56 }
    $sequence_28 = { 83 7d f8 00 75 c7 ff 75 fc e8 ?? ?? ?? ?? c9 }
    $sequence_29 = { 0f b3 ce 86 d6 2a f4 b2 52 b0 ca c7 45 fc 00 00 00 00 }
    $sequence_30 = { e8 ?? ?? ?? ?? 59 8b f0 89 b5 e0 f2 ff ff }
    $sequence_31 = { 85 c0 74 04 83 65 f8 00 85 f6 74 07 8b 06 }

  condition:
    7 of them and filesize < 568320
}

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

1d3d73bc-1baa-4138-87a4-135b05f25ab2

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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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