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MALPEDIA_Win_Nikihttp_Auto

autogenerated rule brought to you by yara-signator

MalwareNikihttpMalpedia 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: Nikihttp.

It defines 10 patterns (0 text, 10 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

win-nikihttp-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Nikihttp_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "efb93d62-2d55-5928-82c0-465797a9ac82"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.nikihttp"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.nikihttp_auto.yar#L1-L134"
		license_url = "N/A"
		logic_hash = "b0bfb904b49f84c19d386d2f363ca9288bcaadac73c512fcbf2bf48b763ea69c"
		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 = { ba9ff636ca e9???????? c78424900000006f000000 898424c0000000 8b842490000000 038424c0000000 888424d1000000 }
		$sequence_1 = { 8b6c2440 40886906 c744245067000000 bdde57ec52 0f1f8000000000 81fdde57ec52 740a }
		$sequence_2 = { eb07 b90e73818d ebe7 c785c000000069000000 c785e800000033000000 b94880ffaa 662e0f1f840000000000 }
		$sequence_3 = { 8b05???????? 8d50ff 0fafd0 f6c201 bae2cac19b 410f44d1 833d????????0a }
		$sequence_4 = { b97ce72407 662e0f1f840000000000 6690 81f921011b60 0f8488feffff 81f97ce72407 75ec }
		$sequence_5 = { baeefaca92 eba1 88842448010000 8a842448010000 046f 88842492010000 488d842493010000 }
		$sequence_6 = { e8???????? 884604 4889d9 b253 e8???????? 884605 4889d9 }
		$sequence_7 = { bab24ff80a ebb3 c7859800000069000000 888588000000 8a8588000000 8b8d98000000 00c1 }
		$sequence_8 = { bb5c2fdba5 b8d00d104b 41b8787aaae5 bae5e72c6e 0f1f4000 81fb777aaae5 7e28 }
		$sequence_9 = { e9???????? 888424d0000000 8a8424d0000000 884706 488d5908 bae09a3ca6 0f1f4000 }

	condition:
		7 of them and filesize < 2543616
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ ba9ff636ca e9???????? c78424900000006f000000 898424c0000000 8b842490000000 038424c0000000 888424d1000000 }
$sequence_1hex{ 8b6c2440 40886906 c744245067000000 bdde57ec52 0f1f8000000000 81fdde57ec52 740a }
$sequence_2hex{ eb07 b90e73818d ebe7 c785c000000069000000 c785e800000033000000 b94880ffaa 662e0f1f840000000000 }
$sequence_3hex{ 8b05???????? 8d50ff 0fafd0 f6c201 bae2cac19b 410f44d1 833d????????0a }
$sequence_4hex{ b97ce72407 662e0f1f840000000000 6690 81f921011b60 0f8488feffff 81f97ce72407 75ec }
$sequence_5hex{ baeefaca92 eba1 88842448010000 8a842448010000 046f 88842492010000 488d842493010000 }
$sequence_6hex{ e8???????? 884604 4889d9 b253 e8???????? 884605 4889d9 }
$sequence_7hex{ bab24ff80a ebb3 c7859800000069000000 888588000000 8a8588000000 8b8d98000000 00c1 }
$sequence_8hex{ bb5c2fdba5 b8d00d104b 41b8787aaae5 bae5e72c6e 0f1f4000 81fb777aaae5 7e28 }
$sequence_9hex{ e9???????? 888424d0000000 8a8424d0000000 884706 488d5908 bae09a3ca6 0f1f4000 }

Condition

7 of them and filesize < 2543616

In plain words (Heuristic)

  • The file must be smaller than 2543616 (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: efb93d62-2d55-5928-82c0-465797a9ac82

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