YARA · Volexity threat-intel
VOLEXITY_Apt_Malware_Win_Applejeus_B_Oct22
Detects unpacked AppleJeus samples.
- Author
- threatintel@volexity.com
- Date
- 2022-11-03
- Modified
- 2025-05-21
- Score / Quality
- 75 / 80
What this rule detects
Detects unpacked AppleJeus samples.
Associated malware family: Applejeus.
It defines 4 patterns (4 text, 0 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
rule VOLEXITY_Apt_Malware_Win_Applejeus_B_Oct22 : LAZYPINE FILE MEMORY
{
meta:
= "Detects unpacked AppleJeus samples."
= "threatintel@volexity.com"
= "8586dc64-225b-5f28-a6d6-b9b6e8f1c815"
= "2022-11-03"
= "2025-05-21"
= "https://www.volexity.com/blog/2022/12/01/buyer-beware-fake-cryptocurrency-applications-serving-as-front-for-applejeus-malware/"
= "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#L24-L54"
= "https://github.com/volexity/threat-intel/blob/3a9d0b52459877ee866a9a0ba06e60059b778c77/LICENSE.txt"
= "9352625b3e6a3c998e328e11ad43efb5602fe669aed9c9388af5f55fadfedc78"
= "76f3c9692ea96d3cadbbcad03477ab6c53445935352cb215152b9b5483666d43"
= 75
= 80
= "LAZYPINE, FILE, MEMORY"
= "win"
= "all"
= "file,memory"
= "critical"
= "See license at https://github.com/volexity/threat-intel/blob/main/LICENSE.txt"
= 8497
= 5
strings:
$key1 = "AppX7y4nbzq37zn4ks9k7amqjywdat7d"
$key2 = "Gd2n5frvG2eZ1KOe"
$str1 = "Windows %d(%d)-%s"
$str2 = "&act=check"
condition:
( any of ( $key* ) and 1 of ( $str* ) ) or all of ( $str* )
}
Strings (4 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $key1 | text | "AppX7y4nbzq37zn4ks9k7amqjywdat7d" | |
| $key2 | text | "Gd2n5frvG2eZ1KOe" | |
| $str1 | text | "Windows %d(%d)-%s" | |
| $str2 | text | "&act=check" |
Condition
( any of ( $key* ) and 1 of ( $str* ) ) or all of ( $str* )In plain words (Heuristic)
- All patterns in ( $str* ) must match.
- At least one pattern in ( $key* ) must match.
- At least 1 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.
Sample hashes
Hashes of samples the author lists in the rule's meta (look them up in your threat-intelligence platform).
- 9352625b3e6a3c998e328e11ad43efb5602fe669aed9c9388af5f55fadfedc78
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.
Mirrored via YARA Forge 20260927, which prefixes rule names with the source and adds normalised meta fields.
Rule id: 8586dc64-225b-5f28-a6d6-b9b6e8f1c815
Metadata
| os | win |
|---|---|
| os_arch | all |
| scan_context | file,memory |
| severity | critical |
| rule_id | 8497 |
| version | 5 |
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