TROJ_FAKEAV.ZQ
Windows 2000, Windows XP, Windows Server 2003
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Trojan
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
It deletes itself after execution.
TECHNICAL DETAILS
409,600 bytes
EXE
Yes
05 Jul 2012
Arrival Details
This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
Installation
This Trojan drops the following copies of itself into the affected system and executes them:
- {All User's Profile}\Application Data\{random folder name}\{random file name}.exe
Autostart Technique
This Trojan adds the following registry entries to enable its automatic execution at every system startup:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\RunOnce
{random file name} = "{All User's Profile}\Application Data\{random folder name}\{random file name}.exe"
Other Details
This Trojan connects to the following possibly malicious URL:
- http://{BLOCKED}.{BLOCKED}.235.9/api/stats/install/?ts=a9998cc7&affid=56333&ver=3050006&group=liv
- http://{BLOCKED}.{BLOCKED}.235.9/api/urls/?ts=a9998cc7&affid=56333
It deletes itself after execution.
SOLUTION
9.200
9.240.05
06 Jul 2012
9.241.00
07 Jul 2012
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
Restart in Safe Mode
Step 3
Delete this registry value
Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce
- {random file name} = "{All User's Profile}\Application Data\{random folder name}\{random file name}.exe"
- {random file name} = "{All User's Profile}\Application Data\{random folder name}\{random file name}.exe"
Step 4
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_FAKEAV.ZQ. 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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