YARA · Malpedia signator rules
MALPEDIA_Win_Naikon_Auto
autogenerated rule brought to you by yara-signator
- Author
- Felix Bilstein - yara-signator at cocacoding dot com
- Date
- 2026-05-04
- Modified
- 2026-05-18
- Score / Quality
- 75 / 75
What this rule detects
autogenerated rule brought to you by yara-signator
Associated malware family: Naikon.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-naikon-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Naikon_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "37e44561-1081-5015-9cbe-a00c6a38b717"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.naikon"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.naikon_auto.yar#L1-L125"
= "N/A"
= "230f73395e50d4415af67d6ca7236840e64e001520a39d78298757e55e6fb620"
= 75
= 75
= "FILE"
= "1"
= "yara-signator v0.6.0"
= "callsandjumps;datarefs;binvalue"
= "20260422"
= "a182e35da64e6d71cb55f125c4d4225196523f14"
= "20260504"
= "CC BY-SA 4.0"
= "TLP:WHITE"
strings:
$sequence_0 = { ff75e8 ff5040 8b436c ff750c ff5024 }
$sequence_1 = { 8d459c 8945e8 53 8d45e0 53 50 }
$sequence_2 = { 59 74bd 68???????? e8???????? 03d8 }
$sequence_3 = { e8???????? 83c424 8d45ac 897dac 50 8d45e0 }
$sequence_4 = { 5f 5e c3 55 8bec 81ec340a0000 }
$sequence_5 = { 8bf8 83ffff 0f84bf000000 85ff 0f84b7000000 8d85d4efffff }
$sequence_6 = { 50 68???????? 53 e8???????? 8d8570fdffff 6a3e }
$sequence_7 = { 50 ff75fc e8???????? 53 8945f4 ffd7 837df400 }
$sequence_8 = { 55 8bec 81ec90010000 8d8570feffff 50 6a02 e8???????? }
$sequence_9 = { ff7508 eb17 6a00 8bce e8???????? 8b06 8b4e08 }
condition:
7 of them and filesize < 188416
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { ff75e8 ff5040 8b436c ff750c ff5024 } | |
| $sequence_1 | hex | { 8d459c 8945e8 53 8d45e0 53 50 } | |
| $sequence_2 | hex | { 59 74bd 68???????? e8???????? 03d8 } | |
| $sequence_3 | hex | { e8???????? 83c424 8d45ac 897dac 50 8d45e0 } | |
| $sequence_4 | hex | { 5f 5e c3 55 8bec 81ec340a0000 } | |
| $sequence_5 | hex | { 8bf8 83ffff 0f84bf000000 85ff 0f84b7000000 8d85d4efffff } | |
| $sequence_6 | hex | { 50 68???????? 53 e8???????? 8d8570fdffff 6a3e } | |
| $sequence_7 | hex | { 50 ff75fc e8???????? 53 8945f4 ffd7 837df400 } | |
| $sequence_8 | hex | { 55 8bec 81ec90010000 8d8570feffff 50 6a02 e8???????? } | |
| $sequence_9 | hex | { ff7508 eb17 6a00 8bce e8???????? 8b06 8b4e08 } |
Condition
7 of them and filesize < 188416In plain words (Heuristic)
- The file must be smaller than 188416 (a cheap guard that skips large files).
- At least 7 patterns in the rule must match.
Test this rule in your browser
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Licence & attribution
Author: Felix Bilstein - yara-signator at cocacoding dot com
Source repository: Malpedia signator rules @ c901f97b7d
Licence: Creative Commons Attribution-ShareAlike 4.0 (repository licence)
Mirrored via YARA Forge 20260927, which prefixes rule names with the source and adds normalised meta fields.
Rule id: 37e44561-1081-5015-9cbe-a00c6a38b717
Metadata
| version | 1 |
|---|---|
| tool | yara-signator v0.6.0 |
| signator_config | callsandjumps;datarefs;binvalue |
| malpedia_rule_date | 20260422 |
| malpedia_hash | a182e35da64e6d71cb55f125c4d4225196523f14 |
| malpedia_version | 20260504 |
| malpedia_license | CC BY-SA 4.0 |
| malpedia_sharing | TLP:WHITE |
Tags:FILE
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