MALPEDIA_Win_Ramsay_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_Ramsay_Auto: FILE {
  meta:
    description        = "autogenerated rule brought to you by yara-signator"
    author             = "Felix Bilstein - yara-signator at cocacoding dot com"
    id                 = "419ecbad-236d-5c68-9c96-e25af72dd2b4"
    date               = "2023-12-06"
    modified           = "2023-12-08"
    reference          = "https://malpedia.caad.fkie.fraunhofer.de/details/win.ramsay"
    source_url         = "https://github.com/malpedia/signator-rules//blob/fbacfc09b84d53d410385e66a8e56f25016c588a/rules/win.ramsay_auto.yar#L1-L167"
    license_url        = "N/A"
    logic_hash         = "eb3826746ddecabb3a90d33f9a9bdc63a3e0601a54105640bc672d97b2815450"
    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  = { 85 c0 75 14 ff 15 ?? ?? ?? ?? 83 f8 20 }
    $sequence_1  = { 83 f8 20 75 02 eb 07 33 c0 e9 ?? ?? ?? ?? }
    $sequence_2  = { ff 15 ?? ?? ?? ?? 85 c0 75 02 eb 02 eb b1 }
    $sequence_3  = { 83 c2 01 89 55 f8 83 7d f8 08 73 1e 8b 45 f8 }
    $sequence_4  = { 89 4d f1 88 4d f5 c7 45 ec 00 00 00 00 6a 06 8d 55 f0 52 }
    $sequence_5  = { 83 c4 04 89 45 f8 8b 4d 08 83 c1 01 51 6a 00 8b 55 f8 }
    $sequence_6  = { 8b 02 ba 02 00 00 00 f7 e2 0f 90 c1 f7 d9 }
    $sequence_7  = { 89 45 f8 83 7d f8 ff 75 07 33 c0 e9 ?? ?? ?? ?? 6a 00 8b 4d f8 }
    $sequence_8  = { 8a 48 1c 88 4a 15 8b 55 08 8b 45 08 }
    $sequence_9  = { 3b 4d 08 73 2c e8 ?? ?? ?? ?? 33 d2 b9 3e 00 00 00 }
    $sequence_10 = { ff 15 ?? ?? ?? ?? 85 c0 75 1a 8b 4d f8 51 }
    $sequence_11 = { ff 15 ?? ?? ?? ?? 33 c0 e9 ?? ?? ?? ?? e8 ?? ?? ?? ?? 85 c0 75 07 33 c0 }
    $sequence_12 = { e8 ?? ?? ?? ?? eb 2b 83 f8 ff 75 26 4c 8d 25 3b 49 01 00 }
    $sequence_13 = { e8 ?? ?? ?? ?? eb 20 48 8d 54 24 70 48 8d 0d 1a fa 01 00 e8 ?? ?? ?? ?? 45 33 c0 33 d2 }
    $sequence_14 = { e8 ?? ?? ?? ?? eb 2d 48 63 44 24 68 48 8b 4c 24 58 }
    $sequence_15 = { e8 ?? ?? ?? ?? eb 31 48 8b 8c 24 28 11 00 00 e8 ?? ?? ?? ?? }

  condition:
    7 of them and filesize < 2031616
}

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

2b442701-ede1-4374-b5ce-861fbf38b60a

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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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