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YARA · SEKOIA.IO Community

SEKOIA_Exploit_Ez_Pwnkit_Strings

Detects ez-pwnkit exploit

ExploitSEKOIA.IO CommunityDetection Rule License 1.1Compiles with YARA-X
Author
Sekoia.io
Date
2024-01-22
Modified
2024-12-19
Score / Quality
75 / 80

What this rule detects

Detects ez-pwnkit exploit

Targets: Linux ELF.

It defines 2 patterns (2 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

exploit-ez-pwnkit-strings.yarDetection Rule License 1.1
rule SEKOIA_Exploit_Ez_Pwnkit_Strings : FILE
{
	meta:
		description = "Detects ez-pwnkit exploit"
		author = "Sekoia.io"
		id = "24301f35-8174-4e0d-b14a-fc7e45a29b26"
		date = "2024-01-22"
		modified = "2024-12-19"
		reference = "https://github.com/SEKOIA-IO/Community"
		source_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/exploit_ez_pwnkit_strings.yar#L1-L18"
		license_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
		logic_hash = "36ec579f6c2dfeaf4ae6f6559d565d418a1f31199102eaa390ca36493f5b18cd"
		score = 75
		quality = 80
		tags = "FILE"
		version = "1.0"
		classification = "TLP:CLEAR"

	strings:
		$s1 = "go.buildid"
		$s2 = "github.com/OXDBXKXO/ez-pwnkit"

	condition:
		uint32be( 0 ) == 0x7f454c46 and filesize < 5MB and $s1 and #s2 > 5
}

Strings (2 patterns)

IdentifierTypeValueModifiers
$s1text"go.buildid"
$s2text"github.com/OXDBXKXO/ez-pwnkit"

Condition

uint32be( 0 ) == 0x7f454c46 and filesize < 5MB and $s1 and #s2 > 5

In plain words (Heuristic)

  • The file must start with the ELF header — a Linux/Unix executable.
  • The file must be smaller than 5MB (a cheap guard that skips large files).
  • Pattern $s2 must occur > 5 times.
  • Pattern $s1 must be present.

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References

Licence & attribution

Author: Sekoia.io

Source repository: SEKOIA.IO Community @ a438a5901a

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: 24301f35-8174-4e0d-b14a-fc7e45a29b26

Metadata

version1.0
classificationTLP:CLEAR

Tags:FILE