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SEKOIA_Tool_Ehole

No description has been set in the source file - SEKOIA

Hack toolSEKOIA.IO CommunityDetection Rule License 1.1Compiles with YARA-X
Author
Sekoia.io
Date
2023-06-23
Modified
2024-12-19
Score / Quality
75 / 80

What this rule detects

No description has been set in the source file - SEKOIA

Targets: Windows PE, Linux ELF.

It defines 6 patterns (6 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

tool-ehole.yarDetection Rule License 1.1
rule SEKOIA_Tool_Ehole : FILE
{
	meta:
		description = "No description has been set in the source file - SEKOIA"
		author = "Sekoia.io"
		id = "7d30ffd0-fada-4ef4-98c3-5572a4e1e140"
		date = "2023-06-23"
		modified = "2024-12-19"
		reference = "https://github.com/SEKOIA-IO/Community"
		source_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/tool_ehole.yar#L1-L21"
		license_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
		logic_hash = "df937417b2f8e12f80fbe2edaa0863de6ed7862c117dff2a21255cb7d1d9ad3d"
		score = 75
		quality = 80
		tags = "FILE"
		version = "1.0"
		classification = "TLP:CLEAR"

	strings:
		$s1 = "main.http400"
		$s2 = "main.fofa_c"
		$s3 = "main.Jsjump"
		$s4 = "main.StandBase64"
		$s5 = "main.fofa_http"
		$s6 = "main.fofa_seach"

	condition:
		( uint32be( 0 ) == 0x7f454c46 or uint16be( 0 ) == 0x4d5a ) and filesize < 11MB and all of them
}

Strings (6 patterns)

IdentifierTypeValueModifiers
$s1text"main.http400"
$s2text"main.fofa_c"
$s3text"main.Jsjump"
$s4text"main.StandBase64"
$s5text"main.fofa_http"
$s6text"main.fofa_seach"

Condition

( uint32be( 0 ) == 0x7f454c46 or uint16be( 0 ) == 0x4d5a ) and filesize < 11MB and all of them

In plain words (Heuristic)

  • The file must start with “MZ” — a Windows executable (PE).
  • The file must start with the ELF header — a Linux/Unix executable.
  • The file must be smaller than 11MB (a cheap guard that skips large files).
  • All patterns in the rule must match.

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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: 7d30ffd0-fada-4ef4-98c3-5572a4e1e140

Metadata

version1.0
classificationTLP:CLEAR

Tags:FILE