YARA · Volexity threat-intel

VOLEXITY_Apt_Win_Iconicstealer

Detect the ICONICSTEALER malware family.

APT / threat actorIconic StealerVolexity threat-intelBSD 2-Clause LicenseCompiles with YARA-X

Author: threatintel@volexity.com
Date: 2023-03-30
Score / Quality: 75 / 80

What this rule detects

Detect the ICONICSTEALER malware family.

Associated malware family: Iconic Stealer.

It defines 3 patterns (3 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

Download .yar

apt-win-iconicstealer.yarBSD 2-Clause License

rule VOLEXITY_Apt_Win_Iconicstealer : UTA0040
{
	meta:
		description = "Detect the ICONICSTEALER malware family."
		author = "threatintel@volexity.com"
		id = "d7896506-6ce5-59b1-b24a-87ffdb2a5174"
		date = "2023-03-30"
		modified = "2023-03-30"
		reference = "https://www.reddit.com/r/crowdstrike/comments/125r3uu/20230329_situational_awareness_crowdstrike/"
		source_url = "https://github.com/volexity/threat-intel/blob/3a9d0b52459877ee866a9a0ba06e60059b778c77/2023/2023-03-30 3CX/indicators/rules.yar#L51-L69"
		license_url = "https://github.com/volexity/threat-intel/blob/3a9d0b52459877ee866a9a0ba06e60059b778c77/LICENSE.txt"
		hash = "8ab3a5eaaf8c296080fadf56b265194681d7da5da7c02562953a4cb60e147423"
		logic_hash = "ed7731d2361e7d96a6a35f8359b61a2af049b16bc457cf870db8831e142aebe2"
		score = 75
		quality = 80
		tags = "UTA0040"
		memory_suitable = 1
		license = "See license at https://github.com/volexity/threat-intel/blob/main/LICENSE.txt"

	strings:
		$str1 = "\\3CXDesktopApp\\config.json" wide
		$str2 = "url, title FROM urls" wide
		$str3 = "url, title FROM moz_places" wide

	condition:
		all of them
}

Strings (3 patterns)

Identifier	Type	Value	Modifiers
$str1	text	"\\3CXDesktopApp\\config.json"	wide
$str2	text	"url, title FROM urls"	wide
$str3	text	"url, title FROM moz_places"	wide

Condition

all of them

In plain words (Heuristic)

All patterns in the rule must match.

Test this rule in your browser

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References

https://www.reddit.com/r/crowdstrike/comments/125r3uu/20230329_situational_awareness_crowdstrike/

Sample hashes

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

8ab3a5eaaf8c296080fadf56b265194681d7da5da7c02562953a4cb60e147423

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: d7896506-6ce5-59b1-b24a-87ffdb2a5174

Metadata

memory_suitable	1

Tags:UTA0040

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