MALPEDIA_Win_Sombrat_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_Sombrat_Auto: FILE {
  meta:
    description        = "autogenerated rule brought to you by yara-signator"
    author             = "Felix Bilstein - yara-signator at cocacoding dot com"
    id                 = "829e34aa-1da2-5a33-9238-c1cc0c096058"
    date               = "2023-12-06"
    modified           = "2023-12-08"
    reference          = "https://malpedia.caad.fkie.fraunhofer.de/details/win.sombrat"
    source_url         = "https://github.com/malpedia/signator-rules//blob/fbacfc09b84d53d410385e66a8e56f25016c588a/rules/win.sombrat_auto.yar#L1-L149"
    license_url        = "N/A"
    logic_hash         = "a1432e014afc208b0318e2ead477453bc5bd4bddb98bd4c2d60380403a2290c4"
    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  = { 01 41 14 8b 75 08 83 7d f8 00 8b 5d f4 }
    $sequence_1  = { 01 04 1e 8b 45 08 42 8d 73 08 }
    $sequence_2  = { 01 44 24 4a 89 4e 0c ff b7 2c 01 00 00 ff 15 ?? ?? ?? ?? }
    $sequence_3  = { 01 42 0c 8b 11 29 42 10 8b 09 }
    $sequence_4  = { 01 45 e4 8b 55 f8 83 c4 0c 29 46 44 }
    $sequence_5  = { 00 00 e8 ?? ?? ?? ?? c7 04 24 ?? ?? ?? ?? 8d 5f 0c 68 ?? ?? ?? ?? }
    $sequence_6  = { 75 14 8b 46 10 8d 8d e4 ff fe ff 2b 46 18 03 c3 }
    $sequence_7  = { 01 41 14 01 46 20 f6 46 0c 04 89 45 e0 74 2d }
    $sequence_8  = { 01 5f 08 33 c0 48 8b 4c 24 70 48 33 cc }
    $sequence_9  = { 01 45 f1 45 33 c9 45 33 c0 48 8b 16 }
    $sequence_10 = { 01 6b 08 48 8d 05 dc 98 05 00 41 b9 e7 16 00 00 48 89 44 24 20 }
    $sequence_11 = { 01 5f 08 83 bf d8 00 00 00 16 0f 85 6c 02 00 00 48 8b 87 c8 00 00 00 }
    $sequence_12 = { 01 6b 08 33 c0 e9 ?? ?? ?? ?? 33 ff }
    $sequence_13 = { 01 44 8c 20 48 ff c1 49 3b c9 7c f1 }
    $sequence_14 = { 01 5f 08 33 c0 e9 ?? ?? ?? ?? 48 8b 47 60 }
    $sequence_15 = { 01 5f 08 48 8b cf e8 ?? ?? ?? ?? 8b f0 }

  condition:
    7 of them and filesize < 1466368
}

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

ba78ce4e-058a-43b5-a725-dec5c4c0a729

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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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