JS_AGENT.AYMN
Windows 2000, XP, Server 2003
Threat Type: Trojan
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This Trojan may be downloaded by other malware/grayware/spyware from remote sites. It may be hosted on a website and run when a user accesses the said website.
This is the Trend Micro detection for files that exhibit certain behaviors.
TECHNICAL DETAILS
Arrival Details
This Trojan may be downloaded by other malware/grayware/spyware from remote sites.
It may be hosted on a website and run when a user accesses the said website.
Download Routine
This Trojan connects to the following website(s) to download and execute a malicious file:
- http://{BLOCKED}b.kfc.ha.cn:6668/Down/my/124.exe - detected as TROJ_AGENT.JAAB
Other Details
Based on analysis of the codes, it has the following capabilities:
- Upon opening a compromised file, this script attempts to connect to websites to download other malicious files or display advertisements. Note that the contents of the URL it connects to may change any time.
This is the Trend Micro detection for:
- Files that are compromised through the insertion of an obfuscated script.
SOLUTION
Step 1
For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.
Step 2
Close all opened browser windows
Step 3
Remove malware files dropped/downloaded by JS_AGENT.AYMN
- TROJ_AGENT.JAAB
Step 4
Scan your computer with your Trend Micro product to delete files detected as JS_AGENT.AYMN. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.
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