Overview
JS/Obfuscated.b is a generic detection for obfuscated malicious script files which attempts to exploit unpatched vulnerabilities in the system.
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Minimum DAT
5280 (2008-04-23) Updated DAT5280 (2008-04-23) |
Minimum Engine
5.2.00 File Lengthvaries |
Description Added
2008-04-23 Description Modified2008-12-04 |
Malware Proliferation
Characteristics
JS/Obfuscated.b is a generic detection for obfuscated malicious script files which attempts to exploit unpatched vulnerabilities in the system.
This specially crafted javascript uses various obfuscation techniques to hide the real nature of attacks.
Symptoms
This detection is sufficiently generic, such that it can cover a number of threats that contain the exploit code. Therefore, it is not possible to describe specific symptoms or details about system changes that can occur from this threat. However, simply seeing this detection does not mean that any exploit code was run at all as such exploit code could only run on a vulnerable system.
Additionally some exploits simply cause Internet Explorer to crash and nothing more.
Method of Infection
This threat could be delivered via an email message, IM or an infectious web page.
Removal
A combination of the latest DATs and the Engine will be able to detect and remove this threat. AVERT recommends users not to trust seemingly familiar or safe file icons, particularly when received via P2P clients, IRC, email or other media where users can share files.
Variants