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LOLDRIVERS_MAL_Driver_773B

Detects malicious driver mentioned in LOLDrivers project using VersionInfo values from the PE header - mimidrv.sys. Investigate matches in context: expected filenames or standard vendor/system driver locations can be lower priority, while unexpected filenames or paths are more suspicious.

Vulnerable / malicious driverLOLDriversApache License 2.0Compiles with YARA-X
Author
Florian Roth
Date
2025-09-18
Modified
2026-04-28
Score / Quality
70 / 80

What this rule detects

Detects malicious driver mentioned in LOLDrivers project using VersionInfo values from the PE header - mimidrv.sys. Investigate matches in context: expected filenames or standard vendor/system driver locations can be lower priority, while unexpected filenames or paths are more suspicious.

It defines 3 patterns (0 text, 3 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

Download .yar
mal-driver-773b.yarApache License 2.0
rule LOLDRIVERS_MAL_Driver_773B
{
	meta:
		description = "Detects malicious driver mentioned in LOLDrivers project using VersionInfo values from the PE header - mimidrv.sys. Investigate matches in context: expected filenames or standard vendor/system driver locations can be lower priority, while unexpected filenames or paths are more suspicious."
		author = "Florian Roth"
		id = "6349b7fd-2ba4-5011-a2a3-cb5d13c3992e"
		date = "2025-09-18"
		modified = "2026-04-28"
		reference = "https://github.com/magicsword-io/LOLDrivers"
		source_url = "https://github.com/magicsword-io/LOLDrivers//blob/9fa32adeab865455de8b24cba0bbc0f3439d59f7/detections/yara/yara-rules_mal_drivers.yar#L18-L33"
		license_url = "https://github.com/magicsword-io/LOLDrivers//blob/9fa32adeab865455de8b24cba0bbc0f3439d59f7/LICENSE"
		hash = "773b4a1efb9932dd5116c93d06681990759343dfe13c0858d09245bc610d5894"
		logic_hash = "5906a3c80fce46b8a546449ada8c70dfdfdfedcd516543c6584fb1c715be240a"
		score = 70
		quality = 80
		tags = ""

	strings:
		$ = { 460069006c006500560065007200730069006f006e00[1-8]32002e0031002e0031002e003000 }
		$ = { 500072006f006400750063007400560065007200730069006f006e00[1-8]32002e0031002e0031002e003000 }
		$ = { 4c006500670061006c0043006f007000790072006900670068007400[1-8]43006f00700079007200690067006800740020002800630029002000320030003000370020002d00200032003000310037002000 }

	condition:
		all of them
}

Strings (3 patterns)

IdentifierTypeValueModifiers
$hex{ 460069006c006500560065007200730069006f006e00[1-8]32002e0031002e0031002e003000 }
$hex{ 500072006f006400750063007400560065007200730069006f006e00[1-8]32002e0031002e0031002e003000 }
$hex{ 4c006500670061006c0043006f007000790072006900670068007400[1-8]43006f00700079007200690067006800740020002800630029002000320030003000370020002d0020003200300031003 …

Condition

all of them

In plain words (Heuristic)

  • All patterns in the rule must match.

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References

Sample hashes

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

  • 773b4a1efb9932dd5116c93d06681990759343dfe13c0858d09245bc610d5894

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: 6349b7fd-2ba4-5011-a2a3-cb5d13c3992e

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