TROJ_PERSCA.A
Windows
Threat Type: Trojan
Destructiveness: No
Encrypted: Yes
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.
TECHNICAL DETAILS
520,704 bytes
EXE
Yes
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 files:
- %Program Files%\Common Files\INTEL Audio Interface Device Manager\aiomgr.exe
(Note: %Program Files% is the Program Files folder, where it usually is C:\Program Files on all Windows operating system versions; C:\Program Files (x86) for 32-bit applications running on Windows 64-bit operating systems.)
It creates the following folders:
- %Program Files%\Common Files\INTEL Audio Interface Device Manager
(Note: %Program Files% is the Program Files folder, where it usually is C:\Program Files on all Windows operating system versions; C:\Program Files (x86) for 32-bit applications running on Windows 64-bit operating systems.)
Autostart Technique
This Trojan adds the following registry entries to enable its automatic execution at every system startup:
HKLM\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
INTEL Audio Interface Device Manager = "%Program Files%\Common Files\INTEL Audio Interface Device Manager\aiomgr.exe" 3071006457
NOTES:
It searches for the following AV Products if installed:
- BitDefender Antivirus
- Internet Security Anti-Virus
- PC Tools Internet Security Anti-Virus
- avast! Antivirus
It collects the following information:
- Application Programs
- Running Processes
- Machine Details(OS, host name, etc)
It connects to the following website to send and receive information:
- http://{BLOCKED}c.gov.sy/css/images/_cgi/index.php
SOLUTION
9.750
Step 1
Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.
Step 2
Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.
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_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
- INTEL Audio Interface Device Manager = "%Program Files%\Common Files\INTEL Audio Interface Device Manager\aiomgr.exe" 3071006457
- INTEL Audio Interface Device Manager = "%Program Files%\Common Files\INTEL Audio Interface Device Manager\aiomgr.exe" 3071006457
Step 4
Search and delete these folders
- %Program Files%\Common Files\INTEL Audio Interface Device Manager
Step 5
Search and delete these files
- %Program Files%\Common Files\INTEL Audio Interface Device Manager\aiomgr.exe
Step 6
Scan your computer with your Trend Micro product to delete files detected as TROJ_PERSCA.A. 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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