MALPEDIA_Win_Grey_Energy_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_Grey_Energy_Auto: FILE {
  meta:
    description        = "autogenerated rule brought to you by yara-signator"
    author             = "Felix Bilstein - yara-signator at cocacoding dot com"
    id                 = "4a36cbdc-dd01-583b-ac49-dd33a3c83ba9"
    date               = "2023-12-06"
    modified           = "2023-12-08"
    reference          = "https://malpedia.caad.fkie.fraunhofer.de/details/win.grey_energy"
    source_url         = "https://github.com/malpedia/signator-rules//blob/fbacfc09b84d53d410385e66a8e56f25016c588a/rules/win.grey_energy_auto.yar#L1-L164"
    license_url        = "N/A"
    logic_hash         = "48bebd474d43043ec7179ca6aa1110529eaa285ee6fd70578731385cb5b6f92e"
    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  = { 68 00 00 00 08 57 53 53 }
    $sequence_1  = { e8 ?? ?? ?? ?? 68 ?? ?? ?? ?? 89 45 cc e8 ?? ?? ?? ?? 68 ?? ?? ?? ?? 89 45 d4 e8 ?? ?? ?? ?? }
    $sequence_2  = { 53 53 68 00 00 00 08 57 }
    $sequence_3  = { 89 45 d4 e8 ?? ?? ?? ?? 68 ?? ?? ?? ?? 89 45 d0 e8 ?? ?? ?? ?? }
    $sequence_4  = { 03 45 f0 0f be 08 8b 45 f0 33 d2 }
    $sequence_5  = { 81 e1 ff 00 00 00 8b 45 ec 8b 55 f8 66 89 0c 42 }
    $sequence_6  = { 8b 45 f8 03 45 ec 88 08 eb 10 }
    $sequence_7  = { 8b 55 f0 8b 75 08 66 8b 14 56 66 89 14 41 }
    $sequence_8  = { 66 89 0c 42 eb 14 8b 45 ec 8b 4d f8 }
    $sequence_9  = { 53 ff 15 ?? ?? ?? ?? 8b 75 f8 85 f6 }
    $sequence_10 = { 8b 4d 08 0f b7 0c 41 8b 45 f0 33 d2 }
    $sequence_11 = { 50 6a 40 ff 15 ?? ?? ?? ?? 89 45 f8 83 7d f8 00 75 07 }
    $sequence_12 = { 83 7d f8 00 75 07 33 c0 e9 ?? ?? ?? ?? c7 45 f0 04 00 00 00 }
    $sequence_13 = { 74 07 c6 01 00 41 48 75 f9 ff 75 f8 }
    $sequence_14 = { 48 75 fa 56 ff 15 ?? ?? ?? ?? ff 75 f8 }
    $sequence_15 = { 57 ff 75 e8 ff 75 f0 ff d6 }
    $sequence_16 = { e8 ?? ?? ?? ?? 8b 45 08 3b c7 74 30 57 }

  condition:
    7 of them and filesize < 303104
}

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

e9e7a4dc-50be-4bd6-947c-915553578f26

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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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