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YARA · Signature Base (Florian Roth / Nextron)

SIGNATURE_BASE_HKTL_NFS_NFS_Analyze

Detects the nfs-security-tooling nfy_analyze by HvS Consulting

Hack toolSignature Base (Florian Roth / Nextron)Detection Rule License 1.1Compiles with YARA-X
Author
Marc Stroebel
Date
2024-10-22
Modified
2025-03-20
Score / Quality
75 / 85

What this rule detects

Detects the nfs-security-tooling nfy_analyze by HvS Consulting

It defines 13 patterns (13 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

Download .yar
hktl-nfs-nfs-analyze.yarDetection Rule License 1.1
rule SIGNATURE_BASE_HKTL_NFS_NFS_Analyze
{
	meta:
		description = "Detects the nfs-security-tooling nfy_analyze by HvS Consulting"
		author = "Marc Stroebel"
		id = "3350d0ae-e638-5c8f-a578-ba0ac5521053"
		date = "2024-10-22"
		modified = "2025-03-20"
		reference = "https://github.com/hvs-consulting/nfs-security-tooling"
		source_url = "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/yara/hktl_HvS_nfs_security_tooling.yar#L26-L53"
		license_url = "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/LICENSE"
		logic_hash = "83a9e5b5b404bf28b0334611fe4f38227212783cecea3c9996d23cb00cad42ed"
		score = 75
		quality = 85
		tags = ""

	strings:
		$s1 = "no_root_squash_exports" fullword ascii
		$s2 = "nfs lock manager" fullword ascii
		$s3 = "netapp partner" fullword ascii
		$s4 = "xdrdef.mnt3_type" fullword ascii
		$s5 = "BTRFS subvolumes" fullword ascii
		$s6 = "Unsupported fsid" fullword ascii
		$s7 = "nfs3_read_etc_shadow" fullword ascii
		$s8 = "nfs3_check_no_root_squash" fullword ascii
		$s9 = "krb5i" fullword ascii
		$s10 = "nfs4_overview" fullword ascii
		$s11 = "--btrfs-subvolumes" fullword ascii
		$s12 = "when escaping a BTRFS export" fullword ascii
		$s13 = "No NFS server detected" fullword ascii

	condition:
		6 of them
}

Strings (13 patterns)

IdentifierTypeValueModifiers
$s1text"no_root_squash_exports"fullword ascii
$s2text"nfs lock manager"fullword ascii
$s3text"netapp partner"fullword ascii
$s4text"xdrdef.mnt3_type"fullword ascii
$s5text"BTRFS subvolumes"fullword ascii
$s6text"Unsupported fsid"fullword ascii
$s7text"nfs3_read_etc_shadow"fullword ascii
$s8text"nfs3_check_no_root_squash"fullword ascii
$s9text"krb5i"fullword ascii
$s10text"nfs4_overview"fullword ascii
$s11text"--btrfs-subvolumes"fullword ascii
$s12text"when escaping a BTRFS export"fullword ascii
$s13text"No NFS server detected"fullword ascii

Condition

6 of them

In plain words (Heuristic)

  • At least 6 patterns in the rule must match.

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References

Licence & attribution

Author: Marc Stroebel

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: 3350d0ae-e638-5c8f-a578-ba0ac5521053

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