YARA · Volexity threat-intel

VOLEXITY_Apt_Malware_Linux_Disgomoji_Loader

Detects DISGOMOJI loader using strings in the ELF.

APT / threat actorVolexity threat-intelBSD 2-Clause LicenseCompiles with YARA-X

Author: threatintel@volexity.com
Date: 2024-02-22
Modified: 2024-07-05
Score / Quality: 75 / 80

What this rule detects

Detects DISGOMOJI loader using strings in the ELF.

It defines 1 patterns (1 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

Download .yar

apt-malware-linux-disgomoji-loader.yarBSD 2-Clause License

rule VOLEXITY_Apt_Malware_Linux_Disgomoji_Loader : TRANSPARENTJASMINE FILE MEMORY
{
	meta:
		description = "Detects DISGOMOJI loader using strings in the ELF."
		author = "threatintel@volexity.com"
		id = "6d7848db-f1a5-5ccc-977a-7597b966a31c"
		date = "2024-02-22"
		modified = "2024-07-05"
		reference = "TIB-20240229"
		source_url = "https://github.com/volexity/threat-intel/blob/3a9d0b52459877ee866a9a0ba06e60059b778c77/2024/2024-06-13 DISGOMOJI/indicators/rules.yar#L25-L47"
		license_url = "https://github.com/volexity/threat-intel/blob/3a9d0b52459877ee866a9a0ba06e60059b778c77/LICENSE.txt"
		hash = "51a372fee89f885741515fa6fdf0ebce860f98145c9883f2e3e35c0fe4432885"
		logic_hash = "d9be4846bab5fffcfd60eaec377443819404f30ec088905c2ee26bd3b7525832"
		score = 75
		quality = 80
		tags = "TRANSPARENTJASMINE, FILE, MEMORY"
		os = "linux"
		os_arch = "all"
		scan_context = "file,memory"
		severity = "critical"
		license = "See license at https://github.com/volexity/threat-intel/blob/main/LICENSE.txt"
		rule_id = 10269
		version = 7

	strings:
		$s1 = "discord-c2/test/main/delievery.go" wide ascii

	condition:
		$s1
}

Strings (1 patterns)

Identifier	Type	Value	Modifiers
$s1	text	"discord-c2/test/main/delievery.go"	wide ascii

Condition

$s1

In plain words (Heuristic)

Pattern $s1 must be present.

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Sample hashes

Hashes of samples the author lists in the rule's meta (look them up in your threat-intelligence platform).

51a372fee89f885741515fa6fdf0ebce860f98145c9883f2e3e35c0fe4432885

Licence & attribution

Author: threatintel@volexity.com

Source repository: Volexity threat-intel @ 3a9d0b5245

Licence: BSD 2-Clause License (stated in the rule's own meta)

“See license at https://github.com/volexity/threat-intel/blob/main/LICENSE.txt”

Original rule

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

Rule id: 6d7848db-f1a5-5ccc-977a-7597b966a31c

Metadata

os	linux
os_arch	all
scan_context	file,memory
severity	critical
rule_id	10269
version	7

Tags:TRANSPARENTJASMINE FILE MEMORY

VOLEXITY_Apt_Malware_Linux_Disgomoji_1
APT / threat actorVolexity threat-intel· threatintel@volexity.com· 2024-02-22
VOLEXITY_Apt_Malware_Linux_Disgomoji_2
APT / threat actorVolexity threat-intel· threatintel@volexity.com· 2024-02-22
VOLEXITY_Apt_Malware_Linux_Disgomoji_Bogus_Strings
APT / threat actorVolexity threat-intel· threatintel@volexity.com· 2024-03-14
VOLEXITY_Apt_Malware_Linux_Disgomoji_Debug_String
APT / threat actorVolexity threat-intel· threatintel@volexity.com· 2024-02-22
VOLEXITY_Apt_Malware_Linux_Disgomoji_Modules
APT / threat actorVolexity threat-intel· threatintel@volexity.com· 2024-02-22
VOLEXITY_Apt_Malware_Linux_Disgomoji_Script_Lan_Conf
APT / threat actorVolexity threat-intel· threatintel@volexity.com· 2024-03-07
VOLEXITY_Apt_Malware_Linux_Disgomoji_Script_Uevent_Seqnum
APT / threat actorVolexity threat-intel· threatintel@volexity.com· 2024-03-07
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APT / threat actorVolexity threat-intel· threatintel@volexity.com· 2024-07-30