WORM_AGENT.AWBP
TrojanDownloader:Win32/Delf.GK (Microsoft); Backdoor.Bifrose.I (Symantec); Email-Worm.Win32.Agent.c (Kaspersky); Trojan.Win32.Generic.pak!cobra (Sunbelt); Trojan.Downloader.Agent.YBM (FSecure)
Windows 2000, Windows XP, Windows Server 2003
Threat Type: Worm
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This worm 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
Arrival Details
This worm 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 worm drops the following copies of itself into the affected system:
- %User Temp%\svchost.exe
(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003.)
Other System Modifications
This worm deletes the following files:
- %System%\logunit.sys
- %System Root%\foto_celular.zip
- %System Root%\foto_celular.scr
- %System%\q[_CHAR(0x03)_ìòYýx
- %Temp%\scs1.tmp
- %Temp%\scs2.tmp
(Note: %System% is the Windows system folder, which is usually C:\Windows\System on Windows 98 and ME, C:\WINNT\System32 on Windows NT and 2000, or C:\Windows\System32 on Windows XP and Server 2003.. %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.. %Temp% is the Windows Temporary folder, which is usually C:\Windows\Temp or C:\WINNT\Temp.)
Dropping Routine
This worm drops the following files:
- %System%\msnworm.exe
- %User Temp%\svchost.exe
- %System%\logunit.sys
(Note: %System% is the Windows system folder, which is usually C:\Windows\System on Windows 98 and ME, C:\WINNT\System32 on Windows NT and 2000, or C:\Windows\System32 on Windows XP and Server 2003.. %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003.)
Other Details
This worm connects to the following possibly malicious URL:
- http://www.{BLOCKED}log.memebot.com/setup.exe
This report is generated via an automated analysis system.
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
Search and delete these files
- %System%\msnworm.exe
- %User Temp%\svchost.exe
- %System%\logunit.sys
Step 3
Scan your computer with your Trend Micro product to delete files detected as WORM_AGENT.AWBP. 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 4
Restore this file from backup only Microsoft-related files will be restored. If this malware/grayware also deleted files related to programs that are not from Microsoft, please reinstall those programs on you computer again.
- %System%\logunit.sys
- %System Root%\foto_celular.zip
- %System Root%\foto_celular.scr
- %System%\q[_CHAR(0x03)_ìòYýx
- %Temp%\scs1.tmp
- %Temp%\scs2.tmp
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