MALPEDIA_Win_Campoloader_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_Campoloader_Auto: FILE {
  meta:
    description        = "autogenerated rule brought to you by yara-signator"
    author             = "Felix Bilstein - yara-signator at cocacoding dot com"
    id                 = "00b62c88-0d38-56b9-90a5-7c85290ffbe9"
    date               = "2023-12-06"
    modified           = "2023-12-08"
    reference          = "https://malpedia.caad.fkie.fraunhofer.de/details/win.campoloader"
    source_url         = "https://github.com/malpedia/signator-rules//blob/fbacfc09b84d53d410385e66a8e56f25016c588a/rules/win.campoloader_auto.yar#L1-L116"
    license_url        = "N/A"
    logic_hash         = "dae472a7090c99e8a9ce136356f9bc867c42c508ecb59c9f6aa0187832a15e3c"
    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 = { 83 ec 1c a1 ?? ?? ?? ?? 33 c5 89 45 fc a1 ?? ?? ?? ?? 89 45 e4 }
    $sequence_1 = { 89 8d 58 ef ff ff c7 85 84 ef ff ff 00 00 00 00 8d 55 f4 52 8b 85 58 ef ff ff 50 }
    $sequence_2 = { ff 15 ?? ?? ?? ?? ff 15 ?? ?? ?? ?? 8b 85 84 ef ff ff 8b 4d fc 33 cd e8 ?? ?? ?? ?? }
    $sequence_3 = { 8b 95 84 ef ff ff 03 95 74 ef ff ff c6 02 00 8b 45 0c }
    $sequence_4 = { ff 15 ?? ?? ?? ?? 89 85 50 ef ff ff 0f b7 85 54 ef ff ff 50 }
    $sequence_5 = { 03 8d 8c ef ff ff 89 8d 74 ef ff ff e9 ?? ?? ?? ?? 8b 95 84 ef ff ff 03 95 74 ef ff ff c6 02 00 8b 45 0c }
    $sequence_6 = { ff 15 ?? ?? ?? ?? 89 45 f8 68 ?? ?? ?? ?? 8b 45 fc 50 }
    $sequence_7 = { 6a 01 6a 00 6a 00 68 00 00 00 40 8b 45 10 }
    $sequence_8 = { 8b 85 58 ef ff ff 50 8d 8d f0 fe ff ff 51 }
    $sequence_9 = { 8b 8d 70 ef ff ff 51 8b 95 84 ef ff ff 52 ff 15 ?? ?? ?? ?? }

  condition:
    7 of them and filesize < 66560
}

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

a0ea2834-aae4-458d-8df8-df81fe284df9

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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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