MALPEDIA_Win_Kleptoparasite_Stealer_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_Kleptoparasite_Stealer_Auto: FILE {
  meta:
    description        = "autogenerated rule brought to you by yara-signator"
    author             = "Felix Bilstein - yara-signator at cocacoding dot com"
    id                 = "d0389ad4-24e3-5ce2-885f-8e2d3c44dd15"
    date               = "2023-12-06"
    modified           = "2023-12-08"
    reference          = "https://malpedia.caad.fkie.fraunhofer.de/details/win.kleptoparasite_stealer"
    source_url         = "https://github.com/malpedia/signator-rules//blob/fbacfc09b84d53d410385e66a8e56f25016c588a/rules/win.kleptoparasite_stealer_auto.yar#L1-L131"
    license_url        = "N/A"
    logic_hash         = "1caf749c6c15dea159c6ab2428d269f9b9674545b72666548fcdc2b3e50e89c9"
    score              = 60
    quality            = 35
    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 = { 74 05 89 01 89 51 04 8b e5 5d c3 3b 0d ?? ?? ?? ?? }
    $sequence_1 = { eb e4 6a 0c 68 ?? ?? ?? ?? e8 ?? ?? ?? ?? 83 65 e4 00 33 c0 8b 7d 08 }
    $sequence_2 = { e8 ?? ?? ?? ?? cc 55 8b ec 56 e8 ?? ?? ?? ?? 8b 75 08 }
    $sequence_3 = { 89 51 04 8b e5 5d c3 3b 0d ?? ?? ?? ?? 75 02 }
    $sequence_4 = { b8 ?? ?? ?? ?? c3 e9 ?? ?? ?? ?? 55 8b ec 56 e8 ?? ?? ?? ?? }
    $sequence_5 = { 59 c3 6a 10 68 ?? ?? ?? ?? e8 ?? ?? ?? ?? 33 ff 89 7d e0 }
    $sequence_6 = { 89 51 04 8b e5 5d c3 3b 0d ?? ?? ?? ?? }
    $sequence_7 = { cc 55 8b ec 56 e8 ?? ?? ?? ?? 8b 75 08 6a 02 }
    $sequence_8 = { 89 01 89 51 04 8b e5 5d c3 3b 0d ?? ?? ?? ?? 75 02 }
    $sequence_9 = { c3 e9 ?? ?? ?? ?? 55 8b ec 56 e8 ?? ?? ?? ?? 8b f0 }

  condition:
    7 of them and filesize < 3006464
}

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

cec4eee7-4843-4bb7-94ae-058805ce8d28

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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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