MALPEDIA_Win_Grabbot_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_Grabbot_Auto: FILE {
  meta:
    description        = "autogenerated rule brought to you by yara-signator"
    author             = "Felix Bilstein - yara-signator at cocacoding dot com"
    id                 = "02308264-bf9f-5ce5-8d58-a146011d85f3"
    date               = "2023-12-06"
    modified           = "2023-12-08"
    reference          = "https://malpedia.caad.fkie.fraunhofer.de/details/win.grabbot"
    source_url         = "https://github.com/malpedia/signator-rules//blob/fbacfc09b84d53d410385e66a8e56f25016c588a/rules/win.grabbot_auto.yar#L1-L161"
    license_url        = "N/A"
    logic_hash         = "fb36fa0cb6c01a8c284e94b423e764f2d45ce7cf14719bff3ffb20003d9572f1"
    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  = { 0f b7 02 83 f8 5a 77 0b 83 f8 41 72 06 }
    $sequence_1  = { 83 f8 5a 77 0d 83 f8 41 72 08 83 c0 20 }
    $sequence_2  = { 83 f8 41 72 06 83 c0 20 0f b7 c0 83 c2 02 }
    $sequence_3  = { ff d0 c3 b8 8d bd c1 3f 50 e8 ?? ?? ?? ?? }
    $sequence_4  = { ff e0 c3 c3 c3 68 b9 be 72 38 e8 ?? ?? ?? ?? 50 }
    $sequence_5  = { 03 c7 81 38 50 45 00 00 0f 85 3c 01 00 00 0f b7 48 04 ba 4c 01 00 00 }
    $sequence_6  = { 03 c3 81 38 50 45 00 00 89 45 f8 74 08 32 c0 }
    $sequence_7  = { 75 23 8b 8c 18 a0 00 00 00 85 c9 0f 84 89 00 00 00 83 7c 18 74 05 }
    $sequence_8  = { 56 ff d0 33 c9 66 89 4c 37 fe }
    $sequence_9  = { 74 28 8b 0d ?? ?? ?? ?? 89 08 8b 0d ?? ?? ?? ?? 89 48 04 }
    $sequence_10 = { 89 48 0c e9 ?? ?? ?? ?? 33 c0 e9 ?? ?? ?? ?? }
    $sequence_11 = { 89 48 08 8b 0d ?? ?? ?? ?? 89 48 0c e9 ?? ?? ?? ?? }
    $sequence_12 = { 8b f0 85 f6 74 1d 8d 46 01 50 e8 ?? ?? ?? ?? }
    $sequence_13 = { 85 c0 56 0f 9f c3 e8 ?? ?? ?? ?? 83 c4 14 }
    $sequence_14 = { ff 15 ?? ?? ?? ?? a3 ?? ?? ?? ?? 85 c0 75 05 83 c8 ff }
    $sequence_15 = { 74 1b 8d 44 00 02 50 e8 ?? ?? ?? ?? }

  condition:
    7 of them and filesize < 1335296
}

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

46cb9639-f9b3-479b-ae38-15cf0834b1cd

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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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