TROJ_ICOD.AB
Windows 2000, Windows XP, Windows Server 2003
![](/vinfo/imgFiles/legend.jpg)
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 executes the dropped file(s). As a result, malicious routines of the dropped files are exhibited on the affected system.
TECHNICAL DETAILS
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 creates the following folders:
- %Application Data%\Help
(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Windows\Profiles\{user name}\Application Data on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Application Data on Windows NT, and C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000, XP, and Server 2003.)
Other System Modifications
This Trojan adds the following registry entries:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
dwm = "%Application Data%\Microsoft\dwm.exe"
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
WINCHAT = "%Application Data%\Help\WINCHAT.EXE"
Dropping Routine
This Trojan drops the following files:
- %Application Data%\Help\WINCHAT.EXE
- %Application Data%\Microsoft\dwm.exe
(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Windows\Profiles\{user name}\Application Data on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Application Data on Windows NT, and C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000, XP, and Server 2003.)
It executes the dropped file(s). As a result, malicious routines of the dropped files are exhibited on the affected system.
Other Details
This Trojan connects to the following possibly malicious URL:
- http://{BLOCKED}4.{BLOCKED}.212.206