YARA · LOLDrivers

LOLDRIVERS_MAL_Driver_Microsoftcorporation_Ntbiosys_Microsoftrwindowsrntoperatingsystem_C0D8

Detects malicious driver mentioned in LOLDrivers project using VersionInfo values from the PE header - ntbios_2.sys

Vulnerable / malicious driverLOLDriversApache License 2.0Compiles with YARA-X

Author: Florian Roth
Date: 2025-09-18
Modified: 2026-09-08
Score / Quality: 70 / 80

What this rule detects

Detects malicious driver mentioned in LOLDrivers project using VersionInfo values from the PE header - ntbios_2.sys

It defines 8 patterns (0 text, 8 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

Download .yar

mal-driver-microsoftcorporation-ntbiosys-microsoftrwindowsrntoperatingsystem-c0d8.yarApache License 2.0

rule LOLDRIVERS_MAL_Driver_Microsoftcorporation_Ntbiosys_Microsoftrwindowsrntoperatingsystem_C0D8
{
	meta:
		description = "Detects malicious driver mentioned in LOLDrivers project using VersionInfo values from the PE header - ntbios_2.sys"
		author = "Florian Roth"
		id = "f16b4b22-985a-5d39-ae51-709aa9a69d8d"
		date = "2025-09-18"
		modified = "2026-09-08"
		reference = "https://github.com/magicsword-io/LOLDrivers"
		source_url = "https://github.com/magicsword-io/LOLDrivers//blob/9fa32adeab865455de8b24cba0bbc0f3439d59f7/detections/yara/yara-rules_mal_drivers.yar#L872-L892"
		license_url = "https://github.com/magicsword-io/LOLDrivers//blob/9fa32adeab865455de8b24cba0bbc0f3439d59f7/LICENSE"
		hash = "c0d88db11d0f529754d290ed5f4c34b4dba8c4f2e5c4148866daabeab0d25f9c"
		hash = "96bf3ee7c6673b69c6aa173bb44e21fa636b1c2c73f4356a7599c121284a51cc"
		logic_hash = "74ad0b57644d82a77bc902786250156f5e3700671bdf9765055b5908dc345a67"
		score = 70
		quality = 80
		tags = ""

	strings:
		$ = { 00460069006c0065004400650073006300720069007000740069006f006e[1-8]006e007400620069006f00730020006400720069007600650072 }
		$ = { 0043006f006d00700061006e0079004e0061006d0065[1-8]004d006900630072006f0073006f0066007400200043006f00720070006f0072006100740069006f006e }
		$ = { 00460069006c006500560065007200730069006f006e[1-8]0035002c00200030002c00200032002c00200031 }
		$ = { 00500072006f006400750063007400560065007200730069006f006e[1-8]0035002c00200030002c00200032002c00200031 }
		$ = { 0049006e007400650072006e0061006c004e0061006d0065[1-8]006e007400620069006f002e007300790073 }
		$ = { 00500072006f0064007500630074004e0061006d0065[1-8]0020004d006900630072006f0073006f00660074002800520029002000570069006e0064006f0077007300200028005200290020004e00540020004f007000650072006100740069006e0067002000530079007300740065006d }
		$ = { 004f0072006900670069006e0061006c00460069006c0065006e0061006d0065[1-8]006e007400620069006f0073002e007300790073 }
		$ = { 004c006500670061006c0043006f0070007900720069006700680074[1-8]7248674362406709002000280043002900200032003000300033 }

	condition:
		all of them
}

Strings (8 patterns)

Identifier	Type	Value
$	hex	{ 00460069006c0065004400650073006300720069007000740069006f006e[1-8]006e007400620069006f00730020006400720069007600650072 }
$	hex	{ 0043006f006d00700061006e0079004e0061006d0065[1-8]004d006900630072006f0073006f0066007400200043006f00720070006f0072006100740069006f006e }
$	hex	{ 00460069006c006500560065007200730069006f006e[1-8]0035002c00200030002c00200032002c00200031 }
$	hex	{ 00500072006f006400750063007400560065007200730069006f006e[1-8]0035002c00200030002c00200032002c00200031 }
$	hex	{ 0049006e007400650072006e0061006c004e0061006d0065[1-8]006e007400620069006f002e007300790073 }
$	hex	{ 00500072006f0064007500630074004e0061006d0065[1-8]0020004d006900630072006f0073006f00660074002800520029002000570069006e0064006f0077007300200028005200290020004e0 …
$	hex	{ 004f0072006900670069006e0061006c00460069006c0065006e0061006d0065[1-8]006e007400620069006f0073002e007300790073 }
$	hex	{ 004c006500670061006c0043006f0070007900720069006700680074[1-8]7248674362406709002000280043002900200032003000300033 }

Condition

all of them

In plain words (Heuristic)

All patterns in the rule must match.

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References

https://github.com/magicsword-io/LOLDrivers

Sample hashes

Hashes of samples the author lists in the rule's meta (look them up in your threat-intelligence platform).

c0d88db11d0f529754d290ed5f4c34b4dba8c4f2e5c4148866daabeab0d25f9c
96bf3ee7c6673b69c6aa173bb44e21fa636b1c2c73f4356a7599c121284a51cc

Licence & attribution

Author: Florian Roth

Source repository: LOLDrivers @ 9fa32adeab

Licence: Apache License 2.0 (repository licence)

Original rule

Mirrored via YARA Forge 20260927, which prefixes rule names with the source and adds normalised meta fields.

Rule id: f16b4b22-985a-5d39-ae51-709aa9a69d8d

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