MALPEDIA_Win_Grateful_Pos_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_Grateful_Pos_Auto: FILE {
  meta:
    description        = "autogenerated rule brought to you by yara-signator"
    author             = "Felix Bilstein - yara-signator at cocacoding dot com"
    id                 = "142dbaaf-bae9-512b-8e1e-de26b0ad1d45"
    date               = "2023-12-06"
    modified           = "2023-12-08"
    reference          = "https://malpedia.caad.fkie.fraunhofer.de/details/win.grateful_pos"
    source_url         = "https://github.com/malpedia/signator-rules//blob/fbacfc09b84d53d410385e66a8e56f25016c588a/rules/win.grateful_pos_auto.yar#L1-L169"
    license_url        = "N/A"
    logic_hash         = "bd00e16b742e3f98f3581779e2ac022b9c7b51a75c5cf9f592cacfe60dca60a5"
    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  = { eb 07 b8 fc ff ff ff eb 02 33 c0 }
    $sequence_1  = { 74 07 b8 f6 ff ff ff eb 02 33 c0 }
    $sequence_2  = { e8 ?? ?? ?? ?? 99 b9 80 ee 36 00 f7 f9 }
    $sequence_3  = { 74 11 e8 ?? ?? ?? ?? e8 ?? ?? ?? ?? 33 c0 e9 ?? ?? ?? ?? }
    $sequence_4  = { e8 ?? ?? ?? ?? 83 f8 01 75 10 e8 ?? ?? ?? ?? e8 ?? ?? ?? ?? }
    $sequence_5  = { eb 1a b8 fd ff ff ff eb 13 b8 fc ff ff ff }
    $sequence_6  = { 8b b5 f4 ff fd ff 03 b5 f8 ff fd ff c1 ee 03 8b 45 08 8b 78 10 }
    $sequence_7  = { 68 10 04 00 00 ff 15 ?? ?? ?? ?? 89 85 f4 fb ff ff 83 bd f4 fb ff ff 00 0f 84 88 01 00 00 8a 0d ?? ?? ?? ?? }
    $sequence_8  = { 83 fa 7b 75 0a 6a 01 e8 ?? ?? ?? ?? }
    $sequence_9  = { 8b 4d fc 89 41 10 8b 55 0c 8b 42 0c c1 e8 03 50 }
    $sequence_10 = { c7 45 fc ff ff ff ff 8d 45 f4 64 a3 00 00 00 00 c3 6a 03 e8 ?? ?? ?? ?? 59 }
    $sequence_11 = { 7c 62 8b 8d f8 ff fd ff 0f b6 94 0d fe ff fd ff 83 fa 3a 7d 4f 8b 85 f8 ff fd ff }
    $sequence_12 = { 6b c0 2a 05 ?? ?? ?? ?? 50 e8 ?? ?? ?? ?? 83 c4 0c 85 c0 75 09 }
    $sequence_13 = { 85 c0 0f 84 b2 00 00 00 6a 03 68 ?? ?? ?? ?? 8b 8d e0 fb ff ff 83 e9 0e }
    $sequence_14 = { 88 84 24 8e 01 00 00 b8 01 00 00 00 48 6b c0 3f 48 8d 0d 79 e5 01 00 0f be 04 01 83 f0 4d 88 84 24 8f 01 00 00 }
    $sequence_15 = { 48 8b cd 41 8b d7 e8 ?? ?? ?? ?? 33 c9 85 c0 0f 85 bb 01 00 00 4c 8d 35 ee 48 19 00 }

  condition:
    7 of them and filesize < 3964928
}

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

eaa5596a-0213-4aab-a091-48d3527614cb

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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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