MALPEDIA_Win_Icexloader_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_Icexloader_Auto: FILE {
  meta:
    description        = "autogenerated rule brought to you by yara-signator"
    author             = "Felix Bilstein - yara-signator at cocacoding dot com"
    id                 = "f5f07cf1-ebb8-58bc-85cf-c8730868788c"
    date               = "2023-12-06"
    modified           = "2023-12-08"
    reference          = "https://malpedia.caad.fkie.fraunhofer.de/details/win.icexloader"
    source_url         = "https://github.com/malpedia/signator-rules//blob/fbacfc09b84d53d410385e66a8e56f25016c588a/rules/win.icexloader_auto.yar#L1-L133"
    license_url        = "N/A"
    logic_hash         = "3e81383223a4cc1ff73f88f3e7f296bd8191bce05edbae01407537facee45b04"
    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 = { 75 0c 83 ca ff 85 c9 74 05 8b 01 8d 50 ff 8b 45 08 }
    $sequence_1 = { 89 85 ac fe ff ff 8b 85 c4 fe ff ff 8b 10 89 4c 24 08 8b 8d b4 fe ff ff 89 04 24 89 4c 24 04 }
    $sequence_2 = { 8b 45 20 89 10 c7 45 e0 01 00 00 00 eb 0a 90 eb 07 90 }
    $sequence_3 = { e8 ?? ?? ?? ?? ba 04 00 00 00 0f b7 c0 40 89 85 d0 e6 ff ff 8b 85 e4 e6 ff ff e8 ?? ?? ?? ?? }
    $sequence_4 = { c7 05 ?? ?? ?? ?? 04 00 00 00 66 c7 05 ?? ?? ?? ?? 19 03 c6 05 ?? ?? ?? ?? 01 c7 05 ?? ?? ?? ?? 14 00 00 00 c7 05 ?? ?? ?? ?? e0 d7 43 00 c7 05 ?? ?? ?? ?? aa 91 42 00 }
    $sequence_5 = { 55 ba 7c 00 00 00 89 e5 56 53 83 ec 30 89 4d e4 }
    $sequence_6 = { c7 05 ?? ?? ?? ?? 00 d4 43 00 c7 05 ?? ?? ?? ?? 95 90 42 00 c7 05 ?? ?? ?? ?? 18 e4 43 00 c6 05 ?? ?? ?? ?? 01 c7 05 ?? ?? ?? ?? 00 00 00 00 c7 05 ?? ?? ?? ?? 80 d4 43 00 c7 05 ?? ?? ?? ?? 9d 90 42 00 }
    $sequence_7 = { 83 bd 14 ff ff ff 00 74 05 e8 ?? ?? ?? ?? e8 ?? ?? ?? ?? 8b 8d 64 fe ff ff e8 ?? ?? ?? ?? e8 ?? ?? ?? ?? }
    $sequence_8 = { 57 56 89 d6 ba 01 00 00 00 53 89 cb 83 ec 2c }
    $sequence_9 = { b8 ?? ?? ?? ?? e8 ?? ?? ?? ?? ba 0c 00 00 00 8d 45 a4 e8 ?? ?? ?? ?? ba ?? ?? ?? ?? b9 ?? ?? ?? ?? }

  condition:
    7 of them and filesize < 656384
}

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

b04e38f5-68f4-4877-bc63-4cbe956b3d1f

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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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