MALPEDIA_Win_Dispenserxfs_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_Dispenserxfs_Auto: FILE {
  meta:
    description        = "autogenerated rule brought to you by yara-signator"
    author             = "Felix Bilstein - yara-signator at cocacoding dot com"
    id                 = "49bf9fde-27a7-5a52-b363-6d4c360f5198"
    date               = "2023-12-06"
    modified           = "2023-12-08"
    reference          = "https://malpedia.caad.fkie.fraunhofer.de/details/win.dispenserxfs"
    source_url         = "https://github.com/malpedia/signator-rules//blob/fbacfc09b84d53d410385e66a8e56f25016c588a/rules/win.dispenserxfs_auto.yar#L1-L122"
    license_url        = "N/A"
    logic_hash         = "0ae97d732c7fee9f1fd4b6377f2a916fed962748494ab51169af7ce6e36e4229"
    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 75 c0 89 75 c4 8b 35 ?? ?? ?? ?? 57 c7 45 b4 30 00 00 00 c7 45 b8 03 00 00 00 }
    $sequence_1 = { 68 ?? ?? ?? ?? e8 ?? ?? ?? ?? c7 04 24 10 27 00 00 ff 15 ?? ?? ?? ?? 6a 00 }
    $sequence_2 = { 6a 02 ff 15 ?? ?? ?? ?? 8b f0 83 fe ff 74 ef 8d 85 d4 fd ff ff c7 85 d4 fd ff ff 2c 02 00 00 }
    $sequence_3 = { 7c 08 8d 50 ec e8 ?? ?? ?? ?? 57 ff 15 ?? ?? ?? ?? }
    $sequence_4 = { 74 51 33 c9 33 c0 8b d9 66 3b 42 2e 73 1f 8b 42 30 }
    $sequence_5 = { 50 ff d6 53 6a 03 58 50 8d 85 55 ff ff ff }
    $sequence_6 = { 89 8d e0 fe ff ff 89 b5 e4 fe ff ff 89 b5 e8 fe ff ff 89 b5 ec fe ff ff 89 b5 f0 fe ff ff 66 89 9d f6 fe ff ff }
    $sequence_7 = { 89 45 f0 0f 82 3c ff ff ff 8b 4d f4 8b 45 e4 }
    $sequence_8 = { 8b cf e8 ?? ?? ?? ?? 8d 85 48 fe ff ff 8b d3 50 8b cf }
    $sequence_9 = { 8d 55 c4 83 c4 14 8b f2 8a 02 42 }

  condition:
    7 of them and filesize < 114688
}

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

728b714e-c3e2-4142-aee7-0f72ac46b81d

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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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