MALPEDIA_Win_Xsplus_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_Xsplus_Auto: FILE {
  meta:
    description        = "autogenerated rule brought to you by yara-signator"
    author             = "Felix Bilstein - yara-signator at cocacoding dot com"
    id                 = "fb41ffbb-1e2d-5bdd-9365-c97018c55362"
    date               = "2023-12-06"
    modified           = "2023-12-08"
    reference          = "https://malpedia.caad.fkie.fraunhofer.de/details/win.xsplus"
    source_url         = "https://github.com/malpedia/signator-rules//blob/fbacfc09b84d53d410385e66a8e56f25016c588a/rules/win.xsplus_auto.yar#L1-L178"
    license_url        = "N/A"
    logic_hash         = "1413c5b641befe4b985d097bf7fa94a2fd076afb28674d33f79669c0d9d8240e"
    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 76 1c 8b 46 08 8b 7e 20 8b 36 66 39 4f 18 75 f2 }
    $sequence_1  = { 0f b6 02 33 c1 8b 4d 0c 03 4d fc 88 01 }
    $sequence_2  = { 83 c4 08 89 45 f0 83 7d f0 00 75 0f }
    $sequence_3  = { e9 ?? ?? ?? ?? 8b e5 5d c3 3b 0d ?? ?? ?? ?? }
    $sequence_4  = { 8b 45 f4 83 c0 01 89 45 f4 eb bf eb 2c 6a 08 8d 4d f8 }
    $sequence_5  = { 89 50 18 8b 4d f8 8b 51 1c 83 ea 01 }
    $sequence_6  = { c6 86 4b 01 00 00 43 c7 46 68 e0 a3 40 00 6a 0d e8 ?? ?? ?? ?? 59 83 65 fc 00 }
    $sequence_7  = { 03 45 fc 8a 08 88 0a c7 45 f8 00 00 00 00 }
    $sequence_8  = { 8d 8d f4 fd ff ff 51 ff 15 ?? ?? ?? ?? 89 85 ec fc ff ff 83 bd ec fc ff ff ff 75 65 68 04 01 00 00 }
    $sequence_9  = { 8b 51 18 d1 e2 8b 45 f8 89 50 18 8b 4d f8 }
    $sequence_10 = { c7 45 fc 04 00 00 00 eb 2d 8b 55 10 83 e2 04 }
    $sequence_11 = { 83 c1 01 89 8d e8 fe ff ff 8b 55 0c 52 e8 ?? ?? ?? ?? }
    $sequence_12 = { 8a 80 0c a8 40 00 08 44 3b 1d 0f b6 46 01 47 3b f8 76 ea }
    $sequence_13 = { 8a 15 ?? ?? ?? ?? 88 95 00 ff ff ff b9 3f 00 00 00 33 c0 8d bd 01 ff ff ff f3 ab 66 ab }
    $sequence_14 = { f3 a5 8b 45 fc ff d0 5f 5e 8b e5 }
    $sequence_15 = { 8b 4d 08 51 ff 15 ?? ?? ?? ?? b8 01 00 00 00 e9 ?? ?? ?? ?? 6a 00 ff 15 ?? ?? ?? ?? }
    $sequence_16 = { 89 75 e0 8d b1 20 a8 40 00 89 75 e4 eb 2a 8a 46 01 }

  condition:
    7 of them and filesize < 597872
}

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

eda0b277-e4a1-4ff4-9ef6-93066dbe88be

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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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