MALPEDIA_Win_Daserf_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_Daserf_Auto: FILE {
  meta:
    description        = "autogenerated rule brought to you by yara-signator"
    author             = "Felix Bilstein - yara-signator at cocacoding dot com"
    id                 = "fffb2935-58a7-5828-bf22-dd469fea2b59"
    date               = "2023-12-06"
    modified           = "2023-12-08"
    reference          = "https://malpedia.caad.fkie.fraunhofer.de/details/win.daserf"
    source_url         = "https://github.com/malpedia/signator-rules//blob/fbacfc09b84d53d410385e66a8e56f25016c588a/rules/win.daserf_auto.yar#L1-L167"
    license_url        = "N/A"
    logic_hash         = "194f8b1f42d6928a216ace153b63a40c6d813ea5df60a79ed82a9b2168ff69ee"
    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  = { 89 45 cc ff 15 ?? ?? ?? ?? 89 45 d0 8d 45 b4 }
    $sequence_1  = { b8 08 38 00 00 e8 ?? ?? ?? ?? 53 56 }
    $sequence_2  = { 81 eb 7e e5 b0 31 81 c3 0d 78 23 41 81 c3 db 5d 10 91 81 eb 73 ad 76 3b 05 4c e1 12 8c 81 c3 cc 3c 30 14 }
    $sequence_3  = { 81 c3 ad 48 28 63 81 eb 8c 57 0d 21 2d 21 58 3c c4 2d a9 32 ed 1b 81 c3 f8 ff 28 57 81 eb 46 15 93 23 }
    $sequence_4  = { 81 eb 4e 0e 33 77 87 c0 81 eb fb 04 02 4c 87 ff 2d fa a6 78 76 }
    $sequence_5  = { 81 c3 94 c7 d0 41 81 eb 6a fe d6 2a 81 c3 be d1 83 4b 81 eb 82 63 87 e9 81 c3 d7 e9 81 70 2d 84 4d f6 b2 }
    $sequence_6  = { 50 ff d6 ff b5 68 14 ff ff 8d 85 bc 4f ff ff 50 }
    $sequence_7  = { 2d 49 36 91 6d f7 d1 f7 d1 2d 99 d0 61 87 f7 d1 f7 d1 }
    $sequence_8  = { 8b c9 81 c3 c9 92 0a 05 95 89 ac 24 00 f2 ff ff }
    $sequence_9  = { 75 00 81 c3 e1 09 e0 f6 8b c0 05 37 d6 82 76 9b 81 c3 8d a2 25 f6 87 c9 }
    $sequence_10 = { eb 0e ff 75 fc ff d7 3b f3 74 03 56 }
    $sequence_11 = { 81 c3 27 f2 7a 10 75 00 81 eb c8 84 a5 19 75 00 81 eb 3a 0d e8 0d 87 db 81 c3 b1 19 33 0a }
    $sequence_12 = { 2d 4a bc 18 84 90 2d ea 9b f5 26 75 00 }
    $sequence_13 = { 81 eb f7 4e a6 3a f7 d1 f7 d1 81 eb 19 97 60 ae 9b }
    $sequence_14 = { 2d 96 6c dd 4c 2d 81 c2 6a c5 81 c3 2b 73 f2 52 81 c3 2b ef 6e 96 81 c3 b4 da cc e0 }
    $sequence_15 = { 81 eb 07 5e 2d db 9b 81 c3 5a 11 e7 27 97 89 bc 24 40 f5 ff ff }

  condition:
    7 of them and filesize < 245760
}

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

1758e15c-cc1c-433a-b751-fc3583f0bc32

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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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