TROJ_AGENT.WAWB
Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)
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.
It runs certain commands that it receives remotely from a malicious user. Doing this puts the affected computer and information found on the computer at greater risk.
It connects to certain websites to send and receive information.
TECHNICAL DETAILS
196,216 bytes
EXE
Yes
18 Aug 2010
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.
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\Run
{Random Characters} = {Malware path and filename}.exe
Backdoor Routine
This Trojan executes the following command(s) from a remote malicious user:
- /shr [wins.exe]
- /rsh [SHELL FILE]
- /get
- /put
- /run
- /shut
Other Details
This Trojan connects to the following website to send and receive information:
- http://{BLOCKED}.{BLOCKED}.7.242
- http://{BLOCKED}.{BLOCKED}.193.4
SOLUTION
9.300
7.394.02
18 Aug 2010
7.395.00
19 Aug 2010
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
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\Run
- {Random Characters} = {Malware path and filename}.exe
- {Random Characters} = {Malware path and filename}.exe
Step 4
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_AGENT.WAWB. 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.
Step 5
Scan your computer with your Trend Micro product to delete files detected as TROJ_AGENT.WAWB. 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.
Did this description help? Tell us how we did.