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SEKOIA_Apt_Gobrat_2

Detects GobRat related files

APT / threat actorGobratSEKOIA.IO CommunityDetection Rule License 1.1Compiles with YARA-X
Author
Sekoia.io
Date
2024-09-10
Modified
2024-12-19
Score / Quality
75 / 80

What this rule detects

Detects GobRat related files

Associated malware family: Gobrat.

Targets: Linux ELF.

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

Summary generated from the rule's metadata and condition.

Rule source

apt-gobrat-2.yarDetection Rule License 1.1
rule SEKOIA_Apt_Gobrat_2 : FILE
{
	meta:
		description = "Detects GobRat related files"
		author = "Sekoia.io"
		id = "6b7e38f5-00bc-49c8-b34d-3e878bf426d8"
		date = "2024-09-10"
		modified = "2024-12-19"
		reference = "https://github.com/SEKOIA-IO/Community"
		source_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/apt_gobrat_2.yar#L1-L16"
		license_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
		logic_hash = "9f2fdbe2cc39c91b2ac8904fb29a0142bf770859d17590017920203641860a13"
		score = 75
		quality = 80
		tags = "FILE"
		version = "1.0"
		classification = "TLP:CLEAR"

	strings:
		$ = "thisisweird" ascii
		$ = "ZzZzZzZzZzZz"

	condition:
		all of them and uint32be( 0 ) == 0x7f454c46
}

Strings (2 patterns)

IdentifierTypeValueModifiers
$text"thisisweird"ascii
$text"ZzZzZzZzZzZz"

Condition

all of them and uint32be( 0 ) == 0x7f454c46

In plain words (Heuristic)

  • The file must start with the ELF header — a Linux/Unix executable.
  • 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: 6b7e38f5-00bc-49c8-b34d-3e878bf426d8

Metadata

version1.0
classificationTLP:CLEAR

Tags:FILE

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