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YARA · Signature Base (Florian Roth / Nextron)

SIGNATURE_BASE_MAL_JAVA_Loader_Final_Jar_Aug25

Detects a final Java loader JAR file used in phishing campaigns

MalwareSignature Base (Florian Roth / Nextron)Detection Rule License 1.1Compiles with YARA-X
Author
Florian Roth
Date
2025-08-07
Modified
2026-05-15
Score / Quality
85 / 85

What this rule detects

Detects a final Java loader JAR file used in phishing campaigns

It defines 4 patterns (4 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

Download .yar
mal-java-loader-final-jar-aug25.yarDetection Rule License 1.1
rule SIGNATURE_BASE_MAL_JAVA_Loader_Final_Jar_Aug25
{
	meta:
		description = "Detects a final Java loader JAR file used in phishing campaigns"
		author = "Florian Roth"
		id = "17894519-060b-5414-8430-d6d025e7db83"
		date = "2025-08-07"
		modified = "2026-05-15"
		reference = "https://www.malwation.com/blog/technical-analysis-of-a-stealth-java-loader-used-in-phishing-campaigns-targeting-turkiye"
		source_url = "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/yara/mal_soupdealer_java_aug25.yar#L47-L63"
		license_url = "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/LICENSE"
		hash = "0a7fddd91b332c8daee2c0727b884fc92cfaede02883dbad75f7efc299e884e3"
		logic_hash = "743e7e12afd949aacbbfcfc62b13d4e65b7011ca4301b37b71bc8032f96aff20"
		score = 85
		quality = 85
		tags = ""

	strings:
		$s1 = "Obfuscation by Allatori Obfuscator" ascii fullword
		$s2 = "MANIFEST.MFM" ascii fullword
		$s3 = "GetCpu.classPK" ascii fullword
		$s4 = "extra/spreader" ascii fullword

	condition:
		all of them
}

Strings (4 patterns)

IdentifierTypeValueModifiers
$s1text"Obfuscation by Allatori Obfuscator"ascii fullword
$s2text"MANIFEST.MFM"ascii fullword
$s3text"GetCpu.classPK"ascii fullword
$s4text"extra/spreader"ascii fullword

Condition

all of them

In plain words (Heuristic)

  • All patterns in the rule must match.

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References

Sample hashes

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

  • 0a7fddd91b332c8daee2c0727b884fc92cfaede02883dbad75f7efc299e884e3

Licence & attribution

Author: Florian Roth

Source repository: Signature Base (Florian Roth / Nextron) @ 94a1c48d7a

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: 17894519-060b-5414-8430-d6d025e7db83

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