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YARA · Signature Base (Florian Roth / Nextron)

SIGNATURE_BASE_SUSP_Vulndriver_HP_Hardware_Diagnostics_Etdsupp_May23

Detects vulnerable versions of the HP Hardware Diagnostics driver (etdsupp.sys) based on PE metadata info

Suspicious / huntingSignature Base (Florian Roth / Nextron)Detection Rule License 1.1Compiles with YARA-X
Author
X__Junior (Nextron Systems)
Date
2023-05-12
Modified
2023-12-05
Score / Quality
65 / 85

What this rule detects

Detects vulnerable versions of the HP Hardware Diagnostics driver (etdsupp.sys) based on PE metadata info

Targets: Windows PE.

It defines 3 patterns (1 text, 1 hex, 1 regex).

Summary generated from the rule's metadata and condition.

Rule source

Download .yar
susp-vulndriver-hp-hardware-diagnostics-etdsupp-may23.yarDetection Rule License 1.1
rule SIGNATURE_BASE_SUSP_Vulndriver_HP_Hardware_Diagnostics_Etdsupp_May23 : FILE
{
	meta:
		description = "Detects vulnerable versions of the HP Hardware Diagnostics driver (etdsupp.sys) based on PE metadata info"
		author = "X__Junior (Nextron Systems)"
		id = "8f838e4f-3e3e-5131-9d67-e49f6848bb37"
		date = "2023-05-12"
		modified = "2023-12-05"
		reference = "https://github.com/alfarom256/HPHardwareDiagnostics-PoC/tree/main/"
		source_url = "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/yara/susp_vulndriver_hp_hardware_diagnostics_etdsupp_may23.yar#L1-L16"
		license_url = "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/LICENSE"
		hash = "f744abb99c97d98e4cd08072a897107829d6d8481aee96c22443f626d00f4145"
		logic_hash = "bb50f591e49b1b0b08ccbe4ca5cb3685d8f358e51e6d6f77677bc05701f6b301"
		score = 65
		quality = 85
		tags = "FILE"

	strings:
		$s1 = {4f 00 72 00 69 00 67 00 69 00 6e 00 61 00 6c 00 46 00 69 00 6c 00 65 00 6e 00 61 00 6d 00 65 00 00 00 65 00 74 00 64 00 73 00 75 00 70 00 70 00 2e 00 73 00 79 00 73 00}
		$s2 = "etdsupp.pdb"
		$s3 = /V\x00S\x00_\x00V\x00E\x00R\x00S\x00I\x00O\x00N\x00_\x00I\x00N\x00F\x00O\x00\x00\x00{0,4}\xbd\x04\xef\xfe[\x00-\xff]{4}([\x00-\xff]{2}[\x00-\x11]\x00[\x00-\xff]{4}|\x00\x00\x12\x00\x00\x00\x00\x00)/

	condition:
		uint16( 0 ) == 0x5a4d and int16 ( uint32( 0x3C ) + 0x5c ) == 0x0001 and filesize < 100KB and all of them
}

Strings (3 patterns)

IdentifierTypeValueModifiers
$s1hex{4f 00 72 00 69 00 67 00 69 00 6e 00 61 00 6c 00 46 00 69 00 6c 00 65 00 6e 00 61 00 6d 00 65 00 00 00 65 00 74 00 64 00 73 00 75 00 70 00 70 00 2e 00 73 00 79 …
$s2text"etdsupp.pdb"
$s3regex/V\x00S\x00_\x00V\x00E\x00R\x00S\x00I\x00O\x00N\x00_\x00I\x00N\x00F\x00O\x00\x00\x00{0,4}\xbd\x04\xef\xfe[\x00-\xff]{4}([\x00-\xff]{2}[\x00-\x11]\x00[\x00-\xff] …

Condition

uint16( 0 ) == 0x5a4d and int16 ( uint32( 0x3C ) + 0x5c ) == 0x0001 and filesize < 100KB and all of them

In plain words (Heuristic)

  • The file must start with “MZ” — a Windows executable (PE).
  • The file must be smaller than 100KB (a cheap guard that skips large files).
  • 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).

  • f744abb99c97d98e4cd08072a897107829d6d8481aee96c22443f626d00f4145

Licence & attribution

Author: X__Junior (Nextron Systems)

Source repository: Signature Base (Florian Roth / Nextron) @ 94a1c48d7a

Licence: Detection Rule License 1.1 (repository licence)

Original rule

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

Rule id: 8f838e4f-3e3e-5131-9d67-e49f6848bb37

Tags:FILE

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