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MALPEDIA_Win_Nevada_Auto

autogenerated rule brought to you by yara-signator

MalwareNevadaMalpedia 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: Nevada.

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

Summary generated from the rule's metadata and condition.

Rule source

win-nevada-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Nevada_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "dd945406-d76e-5a64-a7a3-25dc9f81e6d4"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.nevada"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.nevada_auto.yar#L1-L134"
		license_url = "N/A"
		logic_hash = "039061a87d5b2715f05ce587085775dc26f2cd6ca08570e45d99b5e058440eb0"
		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 = { 8bd9 4c8d0de5f00100 b904000000 4c8d05d1f00100 488d15c2da0100 e8???????? 8bcb }
		$sequence_1 = { 4885f6 488b5d28 0f8540020000 48c7431000000000 488b33 4889f1 baffffffff }
		$sequence_2 = { e8???????? 807d6000 7515 807d6101 0f84e3feffff 488d4df8 e8???????? }
		$sequence_3 = { 488945c0 48c745c800000000 488d05067c0300 488945f0 48c745f801000000 48c7450000000000 488d05835a0300 }
		$sequence_4 = { 49896f48 488b6c2420 49896f50 488b6c2460 49896f58 488b6c2458 49896f60 }
		$sequence_5 = { 4c39d1 7613 4889c8 4829d0 757c e9???????? 4c8d52f0 }
		$sequence_6 = { 0fb6473a 3c03 0f84b3010000 4138c4 0f8677feffff e9???????? 807c242700 }
		$sequence_7 = { 488b8c24a0000000 488bbc2498000000 488d0439 48898424c8020000 4c8b4c2430 4b8d0431 48898424d0020000 }
		$sequence_8 = { 4901ff 488db5a0050000 660f1f840000000000 4c39ff 0f840c020000 488b95b0050000 483b95a8050000 }
		$sequence_9 = { bf10000000 480f45f8 488d442450 41bd20000000 4c0f45e8 80fa01 777b }

	condition:
		7 of them and filesize < 1063936
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 8bd9 4c8d0de5f00100 b904000000 4c8d05d1f00100 488d15c2da0100 e8???????? 8bcb }
$sequence_1hex{ 4885f6 488b5d28 0f8540020000 48c7431000000000 488b33 4889f1 baffffffff }
$sequence_2hex{ e8???????? 807d6000 7515 807d6101 0f84e3feffff 488d4df8 e8???????? }
$sequence_3hex{ 488945c0 48c745c800000000 488d05067c0300 488945f0 48c745f801000000 48c7450000000000 488d05835a0300 }
$sequence_4hex{ 49896f48 488b6c2420 49896f50 488b6c2460 49896f58 488b6c2458 49896f60 }
$sequence_5hex{ 4c39d1 7613 4889c8 4829d0 757c e9???????? 4c8d52f0 }
$sequence_6hex{ 0fb6473a 3c03 0f84b3010000 4138c4 0f8677feffff e9???????? 807c242700 }
$sequence_7hex{ 488b8c24a0000000 488bbc2498000000 488d0439 48898424c8020000 4c8b4c2430 4b8d0431 48898424d0020000 }
$sequence_8hex{ 4901ff 488db5a0050000 660f1f840000000000 4c39ff 0f840c020000 488b95b0050000 483b95a8050000 }
$sequence_9hex{ bf10000000 480f45f8 488d442450 41bd20000000 4c0f45e8 80fa01 777b }

Condition

7 of them and filesize < 1063936

In plain words (Heuristic)

  • The file must be smaller than 1063936 (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: dd945406-d76e-5a64-a7a3-25dc9f81e6d4

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