MALPEDIA_Win_Tclient_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_Tclient_Auto: FILE {
  meta:
    description        = "autogenerated rule brought to you by yara-signator"
    author             = "Felix Bilstein - yara-signator at cocacoding dot com"
    id                 = "f2038e8d-aea1-548a-a845-014bf9e62586"
    date               = "2023-12-06"
    modified           = "2023-12-08"
    reference          = "https://malpedia.caad.fkie.fraunhofer.de/details/win.tclient"
    source_url         = "https://github.com/malpedia/signator-rules//blob/fbacfc09b84d53d410385e66a8e56f25016c588a/rules/win.tclient_auto.yar#L1-L133"
    license_url        = "N/A"
    logic_hash         = "d731098e1e4af77da640d6018efa5a27e1199a8bfd1426735ef45625c1645468"
    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 = { 8b e5 5d c2 18 00 b8 ?? ?? ?? ?? e8 ?? ?? ?? ?? 83 ec 70 53 }
    $sequence_1 = { 66 85 f6 74 11 0f b7 c2 42 88 5c 08 04 0f b7 c2 42 }
    $sequence_2 = { e9 ?? ?? ?? ?? 6a 44 8d 44 24 44 53 50 e8 ?? ?? ?? ?? 33 c0 }
    $sequence_3 = { 50 8d 04 19 57 50 e8 ?? ?? ?? ?? 83 c4 0c b8 80 00 00 00 }
    $sequence_4 = { 89 4d b0 23 45 a8 33 c2 c1 c1 05 03 4e 28 81 c2 99 79 82 5a 8b 75 a8 }
    $sequence_5 = { 8b 00 2b c1 8d 4a 01 3b c1 0f 4c c8 89 4d ec 85 c9 }
    $sequence_6 = { 59 59 85 c0 74 43 e9 ?? ?? ?? ?? 85 f6 74 1e }
    $sequence_7 = { 57 e8 ?? ?? ?? ?? 8b 43 04 2b 45 08 50 ff 75 08 }
    $sequence_8 = { 6b c9 30 8b 04 95 c0 a0 47 00 c6 44 01 28 01 8b 04 95 c0 a0 47 00 89 7c 01 18 8b fe e9 ?? ?? ?? ?? }
    $sequence_9 = { 89 be bc 01 00 00 8a 83 98 00 00 00 88 86 75 03 00 00 0f b6 83 98 00 00 00 50 8d 43 66 50 }

  condition:
    7 of them and filesize < 1063936
}

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

93efe4ca-556e-4ba1-adcf-88732e91782a

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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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