Skip to content

YARA · Volexity threat-intel

VOLEXITY_Apt_Malware_Win_Applejeus_C_Oct22

Detects unpacked AppleJeus samples.

APT / threat actorApplejeusVolexity threat-intelBSD 2-Clause LicenseCompiles with YARA-X
Author
threatintel@volexity.com
Date
2022-11-03
Modified
2023-09-28
Score / Quality
75 / 80

What this rule detects

Detects unpacked AppleJeus samples.

Associated malware family: Applejeus.

It defines 5 patterns (5 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

apt-malware-win-applejeus-c-oct22.yarBSD 2-Clause License
rule VOLEXITY_Apt_Malware_Win_Applejeus_C_Oct22 : LAZYPINE MEMORY
{
	meta:
		description = "Detects unpacked AppleJeus samples."
		author = "threatintel@volexity.com"
		id = "c9cbddde-220c-5e26-8760-85c29b98bfeb"
		date = "2022-11-03"
		modified = "2023-09-28"
		reference = "https://www.volexity.com/blog/2022/12/01/buyer-beware-fake-cryptocurrency-applications-serving-as-front-for-applejeus-malware/"
		source_url = "https://github.com/volexity/threat-intel/blob/3a9d0b52459877ee866a9a0ba06e60059b778c77/2022/2022-12-01 Buyer Beware - Fake Cryptocurrency Applications Serving as Front for AppleJeus Malware/yara.yar#L57-L84"
		license_url = "https://github.com/volexity/threat-intel/blob/3a9d0b52459877ee866a9a0ba06e60059b778c77/LICENSE.txt"
		hash = "a0db8f8f13a27df1eacbc01505f311f6b14cf9b84fbc7e84cb764a13f001dbbb"
		logic_hash = "a9e635d9353c8e5c4992beba79299fb889a7a3d5bc3eaf191f8bb7f51258a6c6"
		score = 75
		quality = 80
		tags = "LAZYPINE, MEMORY"
		os = "win"
		os_arch = "all"
		scan_context = "memory"
		severity = "critical"
		license = "See license at https://github.com/volexity/threat-intel/blob/main/LICENSE.txt"
		rule_id = 8519
		version = 3

	strings:
		$str1 = "%sd.e%sc \"%s > %s 2>&1\"" wide
		$str2 = "tuid"
		$str4 = "payload"
		$str5 = "fconn"
		$str6 = "Mozilla_%lu"

	condition:
		5 of ( $str* )
}

Strings (5 patterns)

IdentifierTypeValueModifiers
$str1text"%sd.e%sc \"%s > %s 2>&1\""wide
$str2text"tuid"
$str4text"payload"
$str5text"fconn"
$str6text"Mozilla_%lu"

Condition

5 of ( $str* )

In plain words (Heuristic)

  • At least 5 patterns in ( $str* ) 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

Sample hashes

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

  • a0db8f8f13a27df1eacbc01505f311f6b14cf9b84fbc7e84cb764a13f001dbbb

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”

Copyright notice: Copyright 2022 by Volexity, Inc.

Original rule

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

Rule id: c9cbddde-220c-5e26-8760-85c29b98bfeb

Metadata

oswin
os_archall
scan_contextmemory
severitycritical
rule_id8519
version3

Tags:LAZYPINEMEMORY

More Applejeus rules