MALPEDIA_Win_Ragnarok_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_Ragnarok_Auto: FILE {
  meta:
    description        = "autogenerated rule brought to you by yara-signator"
    author             = "Felix Bilstein - yara-signator at cocacoding dot com"
    id                 = "a9bce1d7-5883-5de4-9b9b-a02072e8d068"
    date               = "2023-12-06"
    modified           = "2023-12-08"
    reference          = "https://malpedia.caad.fkie.fraunhofer.de/details/win.ragnarok"
    source_url         = "https://github.com/malpedia/signator-rules//blob/fbacfc09b84d53d410385e66a8e56f25016c588a/rules/win.ragnarok_auto.yar#L1-L132"
    license_url        = "N/A"
    logic_hash         = "4922b92876243cdefed80b6c256ba49e22b0c6eaa1ad052381af99f572200bea"
    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 = { c1 f9 06 57 6b f8 38 89 4d f4 8b 04 8d 28 75 43 00 8b 54 07 18 89 55 ec }
    $sequence_1 = { 88 42 19 0f b6 46 1a 88 42 1a 0f b6 46 1b 88 42 1b 0f b6 46 1c 88 42 1c }
    $sequence_2 = { c1 e9 08 0f b6 c9 c1 e3 08 c1 ea 10 0f b6 89 10 5c 43 00 33 d9 8b 4d fc }
    $sequence_3 = { 8b c8 23 45 a4 f7 d1 23 4d 9c 0b c8 c1 45 98 0a }
    $sequence_4 = { 0f b6 89 10 4b 43 00 33 d9 0f b6 48 7e c1 e3 08 0f b6 89 10 4b 43 00 33 d9 0f b6 48 7d }
    $sequence_5 = { 8b 7d 08 0f b6 ca 33 3c 8d 10 5d 43 00 8b cf 89 7d 08 33 48 14 89 4d 08 }
    $sequence_6 = { 8b 75 dc 33 f9 03 7d fc 81 c6 4e fd 53 a9 03 7d 98 c1 c2 09 }
    $sequence_7 = { c1 c2 05 8b 7d ac 0b c8 03 4d d8 81 c7 dc bc 1b 8f 03 55 bc 03 f9 }
    $sequence_8 = { 8b 04 85 28 75 43 00 c6 44 03 2a 0a 8b 5d 08 74 7f 8b 45 f8 8b 5d f0 8b 04 85 28 75 43 00 }
    $sequence_9 = { 8b f8 89 bd b8 fe ff ff ff 36 68 ?? ?? ?? ?? ff 35 ?? ?? ?? ?? e8 ?? ?? ?? ?? 8b 48 10 }

  condition:
    7 of them and filesize < 483328
}

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

f41bc84b-4c44-4cdf-ab24-52cff9b9b751

Propose edits, view related rules, and engage with the community through comments.

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 ]]

Community Discussion