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MALPEDIA_Win_Naikon_Auto

autogenerated rule brought to you by yara-signator

MalwareNaikonMalpedia signator rulesCreative Commons Attribution-ShareAlike 4.0Compiles with YARA-X
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:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "37e44561-1081-5015-9cbe-a00c6a38b717"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.naikon"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.naikon_auto.yar#L1-L125"
		license_url = "N/A"
		logic_hash = "230f73395e50d4415af67d6ca7236840e64e001520a39d78298757e55e6fb620"
		score = 75
		quality = 75
		tags = "FILE"
		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"

	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)

IdentifierTypeValueModifiers
$sequence_0hex{ ff75e8 ff5040 8b436c ff750c ff5024 }
$sequence_1hex{ 8d459c 8945e8 53 8d45e0 53 50 }
$sequence_2hex{ 59 74bd 68???????? e8???????? 03d8 }
$sequence_3hex{ e8???????? 83c424 8d45ac 897dac 50 8d45e0 }
$sequence_4hex{ 5f 5e c3 55 8bec 81ec340a0000 }
$sequence_5hex{ 8bf8 83ffff 0f84bf000000 85ff 0f84b7000000 8d85d4efffff }
$sequence_6hex{ 50 68???????? 53 e8???????? 8d8570fdffff 6a3e }
$sequence_7hex{ 50 ff75fc e8???????? 53 8945f4 ffd7 837df400 }
$sequence_8hex{ 55 8bec 81ec90010000 8d8570feffff 50 6a02 e8???????? }
$sequence_9hex{ ff7508 eb17 6a00 8bce e8???????? 8b06 8b4e08 }

Condition

7 of them and filesize < 188416

In 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.

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References

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)

Original rule

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

version1
toolyara-signator v0.6.0
signator_configcallsandjumps;datarefs;binvalue
malpedia_rule_date20260422
malpedia_hasha182e35da64e6d71cb55f125c4d4225196523f14
malpedia_version20260504
malpedia_licenseCC BY-SA 4.0
malpedia_sharingTLP:WHITE

Tags:FILE