MALPEDIA_Win_Anatova_Ransom_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_Anatova_Ransom_Auto: FILE {
  meta:
    description        = "autogenerated rule brought to you by yara-signator"
    author             = "Felix Bilstein - yara-signator at cocacoding dot com"
    id                 = "6cd7c8c4-20c9-5c58-baa7-e42d545001dc"
    date               = "2023-12-06"
    modified           = "2023-12-08"
    reference          = "https://malpedia.caad.fkie.fraunhofer.de/details/win.anatova_ransom"
    source_url         = "https://github.com/malpedia/signator-rules//blob/fbacfc09b84d53d410385e66a8e56f25016c588a/rules/win.anatova_ransom_auto.yar#L1-L128"
    license_url        = "N/A"
    logic_hash         = "2867d50f6d60295cd1f6876cf7316363316dea4699194cf318a991da479d380e"
    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 = { 48 8d 05 ec 57 00 00 48 89 45 88 48 8d 05 eb 57 00 00 48 89 45 90 }
    $sequence_1 = { b8 05 00 00 00 49 89 c3 48 8b 01 49 89 c2 4c 89 d1 4c 89 da e8 ?? ?? ?? ?? }
    $sequence_2 = { 49 89 c2 4c 89 d1 e8 ?? ?? ?? ?? e9 ?? ?? ?? ?? 48 8b 45 e0 49 89 c2 4c 89 d1 }
    $sequence_3 = { e8 ?? ?? ?? ?? 48 8b 05 ?? ?? ?? ?? 48 8b 0d ?? ?? ?? ?? 48 8b 15 ?? ?? ?? ?? 48 89 45 f0 48 8d 45 fc 48 89 44 24 20 }
    $sequence_4 = { 48 83 f8 00 0f 84 b2 00 00 00 48 8b 05 ?? ?? ?? ?? 48 83 f8 00 0f 84 a1 00 00 00 48 8b 05 ?? ?? ?? ?? }
    $sequence_5 = { 49 89 c2 4c 89 d1 e8 ?? ?? ?? ?? 48 8b 05 ?? ?? ?? ?? 48 83 f8 00 0f 84 3e 00 00 00 8b 05 ?? ?? ?? ?? }
    $sequence_6 = { b8 00 00 00 00 49 89 c3 b8 02 00 00 00 49 89 c2 4c 89 d1 4c 89 da 4c 8b 1d ?? ?? ?? ?? }
    $sequence_7 = { 49 89 c0 48 8b 45 d8 49 89 c3 48 8b 45 a0 49 89 c2 4c 89 d1 4c 89 da }
    $sequence_8 = { 49 89 c1 b8 00 00 00 00 49 89 c0 b8 00 00 00 00 49 89 c3 }
    $sequence_9 = { 48 b8 0f 00 00 00 00 00 00 00 49 89 c0 b8 00 00 00 00 49 89 c3 48 8d 45 b1 49 89 c2 4c 89 d1 }

  condition:
    7 of them and filesize < 671744
}

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

ac8a35f3-e4e2-421d-8601-5f0ad07a37f3

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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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