YARA · Volexity threat-intel

VOLEXITY_Apt_Malware_Linux_Disgomoji_Debug_String

Detects DISGOMOJI 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: 2024-11-27
Score / Quality: 75 / 80

What this rule detects

Detects DISGOMOJI using strings in the ELF.

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

Summary generated from the rule's metadata and condition.

Rule source

Download .yar

apt-malware-linux-disgomoji-debug-string.yarBSD 2-Clause License

rule VOLEXITY_Apt_Malware_Linux_Disgomoji_Debug_String : TRANSPARENTJASMINE FILE MEMORY
{
	meta:
		description = "Detects DISGOMOJI using strings in the ELF."
		author = "threatintel@volexity.com"
		id = "eed2468f-7e50-5f3e-946a-277c10984823"
		date = "2024-02-22"
		modified = "2024-11-27"
		reference = "TIB-20240229"
		source_url = "https://github.com/volexity/threat-intel/blob/3a9d0b52459877ee866a9a0ba06e60059b778c77/2024/2024-06-13 DISGOMOJI/indicators/rules.yar#L48-L71"
		license_url = "https://github.com/volexity/threat-intel/blob/3a9d0b52459877ee866a9a0ba06e60059b778c77/LICENSE.txt"
		hash = "d9f29a626857fa251393f056e454dfc02de53288ebe89a282bad38d03f614529"
		logic_hash = "6bb130eead39bd8128983e0f2e76cfeff8865ce8ed3cb73b132ed32d68fc0db0"
		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 = 10268
		version = 9

	strings:
		$s1 = "discord-c2/test/main/payload.go" wide ascii
		$s2 = "Desktop/Golang_Dev/Discord"

	condition:
		any of them
}

Strings (2 patterns)

Identifier	Type	Value	Modifiers
$s1	text	"discord-c2/test/main/payload.go"	wide ascii
$s2	text	"Desktop/Golang_Dev/Discord"

Condition

any of them

In plain words (Heuristic)

At least one pattern in the rule must match.

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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).

d9f29a626857fa251393f056e454dfc02de53288ebe89a282bad38d03f614529

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: eed2468f-7e50-5f3e-946a-277c10984823

Metadata

os	linux
os_arch	all
scan_context	file,memory
severity	critical
rule_id	10268
version	9

Tags:TRANSPARENTJASMINE FILE MEMORY

VOLEXITY_Apt_Malware_Linux_Disgomoji_1
APT / threat actorVolexity threat-intel· threatintel@volexity.com· 2024-02-22
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