MALPEDIA_Win_Privateloader_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_Privateloader_Auto: FILE {
  meta:
    description        = "autogenerated rule brought to you by yara-signator"
    author             = "Felix Bilstein - yara-signator at cocacoding dot com"
    id                 = "704976b4-103d-5caa-b3a7-f03a44637bd7"
    date               = "2023-12-06"
    modified           = "2023-12-08"
    reference          = "https://malpedia.caad.fkie.fraunhofer.de/details/win.privateloader"
    source_url         = "https://github.com/malpedia/signator-rules//blob/fbacfc09b84d53d410385e66a8e56f25016c588a/rules/win.privateloader_auto.yar#L1-L183"
    license_url        = "N/A"
    logic_hash         = "15e13900aae7d6be3cc889a3774b293d4c50bba5cbabc1926697368cc70d28fc"
    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 65 ec 8b 55 ec 89 55 e8 8d 45 f8 }
    $sequence_1  = { 89 4d f4 8b 55 fc 83 7a 14 10 72 09 }
    $sequence_2  = { 0f b6 4d ec 85 c9 74 08 8b 55 fc 8b 02 89 45 e8 }
    $sequence_3  = { 8b 4d ec 8b 55 08 89 51 10 8b 45 08 89 45 e4 8b 4d e8 03 4d e4 }
    $sequence_4  = { 8b 45 d8 8b 4d dc 8b 55 d0 8b 75 d4 }
    $sequence_5  = { 8b 4d ec e8 ?? ?? ?? ?? 8b 4d f0 e8 ?? ?? ?? ?? 88 45 fc }
    $sequence_6  = { 89 75 d4 8b 45 d0 8b 55 d4 5e }
    $sequence_7  = { 8b 4d e8 8b 75 ec 2b c8 1b f2 89 4d e0 89 75 e4 a1 ?? ?? ?? ?? }
    $sequence_8  = { e8 ?? ?? ?? ?? 33 d2 b9 3f 00 00 00 f7 f1 }
    $sequence_9  = { 8b 45 90 8b 4d 94 8b 55 88 8b 75 8c }
    $sequence_10 = { a3 ?? ?? ?? ?? 33 c0 5e c3 3b 0d ?? ?? ?? ?? }
    $sequence_11 = { 89 6c 24 04 8b ec 81 ec 68 01 00 00 a1 ?? ?? ?? ?? 33 c5 89 45 fc 56 }
    $sequence_12 = { d8 1d ?? ?? ?? ?? c9 b8 ff ff ff ff 99 c3 56 8b 35 ?? ?? ?? ?? }
    $sequence_13 = { 13 f1 83 c2 01 89 55 e0 83 d6 00 }
    $sequence_14 = { 6a 04 8d 43 10 50 6a 06 }
    $sequence_15 = { 75 07 68 00 00 80 00 eb 02 6a 00 }
    $sequence_16 = { 8b 45 e4 50 51 52 }
    $sequence_17 = { 0b c8 56 57 75 29 }
    $sequence_18 = { 03 d0 8b 4d 9c 13 f1 83 c2 01 }

  condition:
    7 of them and filesize < 3670016
}

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

20e23060-232c-477b-ad8b-cf99c838c99a

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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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