MALPEDIA_Win_Roopirs_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_Roopirs_Auto: FILE {
  meta:
    description        = "autogenerated rule brought to you by yara-signator"
    author             = "Felix Bilstein - yara-signator at cocacoding dot com"
    id                 = "57676d4c-d0d7-5b4f-80a4-819b4d474425"
    date               = "2023-12-06"
    modified           = "2023-12-08"
    reference          = "https://malpedia.caad.fkie.fraunhofer.de/details/win.roopirs"
    source_url         = "https://github.com/malpedia/signator-rules//blob/fbacfc09b84d53d410385e66a8e56f25016c588a/rules/win.roopirs_auto.yar#L1-L128"
    license_url        = "N/A"
    logic_hash         = "d4e144778ab9b98b475c3cbfeb400528a9373556893774f62bba1f2eb8f36265"
    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 = { c7 45 fc 47 00 00 00 8b 4d d8 51 68 ?? ?? ?? ?? ff 15 ?? ?? ?? ?? 89 45 c0 }
    $sequence_1 = { 50 ff 15 ?? ?? ?? ?? 89 85 30 ff ff ff eb 0a c7 85 30 ff ff ff 00 00 00 00 33 c9 83 7d a8 00 }
    $sequence_2 = { ff 15 ?? ?? ?? ?? 8d 4d b0 ff 15 ?? ?? ?? ?? c7 45 fc 07 00 00 00 83 3d ?? ?? ?? ?? 00 75 1c 68 ?? ?? ?? ?? }
    $sequence_3 = { 89 45 b0 83 7d b0 00 7d 1d 6a 20 68 ?? ?? ?? ?? 8b 45 dc 50 }
    $sequence_4 = { 8d 55 d4 52 6a 05 ff 15 ?? ?? ?? ?? 83 c4 18 8d 45 bc 50 }
    $sequence_5 = { 8b 02 8b 4d 80 51 ff 50 14 db e2 89 85 7c ff ff ff }
    $sequence_6 = { 8b 45 08 50 8b 08 ff 51 04 8b 55 14 56 8d 45 bc }
    $sequence_7 = { c7 85 44 ff ff ff 00 00 00 00 8b 45 ac 89 45 8c 8d 4d cc 51 8b 55 8c }
    $sequence_8 = { 68 ?? ?? ?? ?? 68 ?? ?? ?? ?? ff 15 ?? ?? ?? ?? c7 85 48 ff ff ff d4 62 40 00 eb 0a }
    $sequence_9 = { 8d 4d c8 ff 15 ?? ?? ?? ?? c7 45 fc 07 00 00 00 8b 4d d8 51 68 ?? ?? ?? ?? }

  condition:
    7 of them and filesize < 344064
}

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

380bf720-12fa-4f5b-ab3e-e657ced6b2c2

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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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