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MALPEDIA_Win_Nikitear_Auto

autogenerated rule brought to you by yara-signator

MalwareNikitearMalpedia 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: Nikitear.

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

Summary generated from the rule's metadata and condition.

Rule source

win-nikitear-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Nikitear_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "b9049d27-0fc1-583b-81a9-833de2d7522b"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.nikitear"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.nikitear_auto.yar#L1-L126"
		license_url = "N/A"
		logic_hash = "5827e9be2a08fd3d9f8ef691b6f311ed8991c684e910e34bdb5878684a36debd"
		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 = { 448bd9 48bbb301000000010000 0f1f4000 660f1f840000000000 410fbe0a 8bd1 80e941 }
		$sequence_1 = { 488d1567250200 b903000000 4c8d0553250200 e8???????? 488bd3 8bcf }
		$sequence_2 = { 4833d8 490fafde 4983e901 75d9 488bcb e8???????? 488d55b0 }
		$sequence_3 = { 4883ec60 488b05???????? 4833c4 488945f8 33db 48895dd0 4c8d05da5e0300 }
		$sequence_4 = { 30440db9 48ffc1 4883f910 72ed 0fb645b9 }
		$sequence_5 = { f6c304 7424 410fb60a 83e10f 4a0fbe843108460300 428a8c3118460300 }
		$sequence_6 = { 40383c0b 75f7 33d2 48f7f1 0fb6041a }
		$sequence_7 = { 488bc8 ff15???????? 4889842498000000 4885c0 0f8448070000 c744245654000000 c744245050004f00 }
		$sequence_8 = { e8???????? 483bd8 7509 488d3dbce90100 eb16 b902000000 }
		$sequence_9 = { 0f1f840000000000 8d040a 30440dc1 48ffc1 4883f90b 7306 }

	condition:
		7 of them and filesize < 610304
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 448bd9 48bbb301000000010000 0f1f4000 660f1f840000000000 410fbe0a 8bd1 80e941 }
$sequence_1hex{ 488d1567250200 b903000000 4c8d0553250200 e8???????? 488bd3 8bcf }
$sequence_2hex{ 4833d8 490fafde 4983e901 75d9 488bcb e8???????? 488d55b0 }
$sequence_3hex{ 4883ec60 488b05???????? 4833c4 488945f8 33db 48895dd0 4c8d05da5e0300 }
$sequence_4hex{ 30440db9 48ffc1 4883f910 72ed 0fb645b9 }
$sequence_5hex{ f6c304 7424 410fb60a 83e10f 4a0fbe843108460300 428a8c3118460300 }
$sequence_6hex{ 40383c0b 75f7 33d2 48f7f1 0fb6041a }
$sequence_7hex{ 488bc8 ff15???????? 4889842498000000 4885c0 0f8448070000 c744245654000000 c744245050004f00 }
$sequence_8hex{ e8???????? 483bd8 7509 488d3dbce90100 eb16 b902000000 }
$sequence_9hex{ 0f1f840000000000 8d040a 30440dc1 48ffc1 4883f90b 7306 }

Condition

7 of them and filesize < 610304

In plain words (Heuristic)

  • The file must be smaller than 610304 (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: b9049d27-0fc1-583b-81a9-833de2d7522b

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