YARA · Volexity threat-intel

VOLEXITY_Apt_Mac_Iconic

Detects the MACOS version of the ICONIC loader.

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

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

What this rule detects

Detects the MACOS version of the ICONIC loader.

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

Summary generated from the rule's metadata and condition.

Rule source

Download .yar

apt-mac-iconic.yarBSD 2-Clause License

rule VOLEXITY_Apt_Mac_Iconic : UTA0040
{
	meta:
		description = "Detects the MACOS version of the ICONIC loader."
		author = "threatintel@volexity.com"
		id = "6d702ed3-e5b9-5324-a06b-507c9231cc00"
		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#L32-L50"
		license_url = "https://github.com/volexity/threat-intel/blob/3a9d0b52459877ee866a9a0ba06e60059b778c77/LICENSE.txt"
		hash = "a64fa9f1c76457ecc58402142a8728ce34ccba378c17318b3340083eeb7acc67"
		logic_hash = "7b689c3931632b01869ac2f21a1edca0a5ca9007299fe7cd16962d6866c27558"
		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 = "3CX Desktop App" xor(0x01-0xff)
		$str2 = "__tutma=" xor(0x01-0xff)
		$str3 = "Mozilla/5.0" xor(0x01-0xff)

	condition:
		all of them
}

Strings (3 patterns)

Identifier	Type	Value	Modifiers
$str1	text	"3CX Desktop App"	xor(0x01-0xff)
$str2	text	"__tutma="	xor(0x01-0xff)
$str3	text	"Mozilla/5.0"	xor(0x01-0xff)

Condition

all of them

In plain words (Heuristic)

All patterns in the rule must match.

Test this rule in your browser

Drop a file to scan it with this rule using YARA-X compiled to WebAssembly. Nothing is uploaded.

Drop a file here or click to chooseScanned locally with YARA-X. Files up to 200 MB.

Open in editor

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).

a64fa9f1c76457ecc58402142a8728ce34ccba378c17318b3340083eeb7acc67

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: 6d702ed3-e5b9-5324-a06b-507c9231cc00

Metadata

memory_suitable	1

Tags:UTA0040

VOLEXITY_Apt_Win_Iconicstealer
APT / threat actorVolexity threat-intel· threatintel@volexity.com· 2023-03-30
VOLEXITY_Apt_Win_3Cx_Backdoored_Lib
APT / threat actorVolexity threat-intel· threatintel@volexity.com· 2023-03-30
VOLEXITY_Apt_Ico_Uta0040_B64_C2
APT / threat actorVolexity threat-intel· threatintel@volexity.com· 2023-03-30
VOLEXITY_Apt_Malware_Win_Deepdata_Module
APT / threat actorVolexity threat-intel· threatintel@volexity.com· 2024-07-30
VOLEXITY_Apt_Malware_Py_Dustpan_Pyloader
APT / threat actorVolexity threat-intel· threatintel@volexity.com· 2023-07-21
VOLEXITY_Apt_Malware_Win_Dustpan_Apihashes
APT / threat actorVolexity threat-intel· threatintel@volexity.com· 2023-08-17
VOLEXITY_Apt_Delivery_Macro_Lazypine_Jeus_B
APT / threat actorVolexity threat-intel· threatintel@volexity.com· 2022-11-03
VOLEXITY_Apt_Delivery_Office_Macro_Lazypine_Jeus
APT / threat actorVolexity threat-intel· threatintel@volexity.com· 2022-11-02