Content
W97M/Marker.gen
- Type
- Virus
- SubType
- Macro
- Discovery Date
- 07/01/1999
- Length
- Minimum DAT
- 4023 (04/28/1999)
- Updated DAT
- 4813 (07/24/2006)
- Minimum Engine
- 5.1.00
- Description Added
- 08/20/1999
- Description Modified
- 04/19/2002 1:37 AM (PT)
Tab Navigation
Characteristics
The W97M/Marker family hooks system events Document_Open and Document_Close to run the infection routine - this is common among all variants.
W97M/Marker.d (and several other variants) have an empty Document_New routine.
W97M/Marker.n modifies document properties in 30% of infections with same as W97M/Ethan.a.
W97M/Marker.o,.p,.x have a payload activation date of Feb 22 (see description in VIL).
W97M/Marker.o gives the message "Happy Birthday Shankar".
W97M/Marker.s beeps 1000 times when opening documents.
W97M/Marker.t password protects documents with the password of 'teste'.
W97M/Marker.ab writes a new file every time an infected document is opened by the name "india"#.txt with the text "Kashmir is an integral part of INDIA. JAI HIND."
W97M/Marker.ac uses system events AUTOOPEN, AUTOCLOSE to run FNord macro.
W97M/Marker.af gives the message "Happy Birthday Akhmed Khan".
W97M/Marker.ai gives the message "Happy Birthday Shankar" and also contains a reference to the same Autoopen macro as Beast.41472 activating an embedded object 5 minutes after opening the infected document - the embedded object does not exist however.
Symptoms
Macro warning when opening infected documents on non-infected system.
Method of Infection
Opening infected documents will directly infect the local Word environment and any document used thereafter.
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 :
* 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
- W97M/Marker.kq
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.
Characteristics
Characteristics -
The W97M/Marker family hooks system events Document_Open and Document_Close to run the infection routine - this is common among all variants.
W97M/Marker.d (and several other variants) have an empty Document_New routine.
W97M/Marker.n modifies document properties in 30% of infections with same as W97M/Ethan.a.
W97M/Marker.o,.p,.x have a payload activation date of Feb 22 (see description in VIL).
W97M/Marker.o gives the message "Happy Birthday Shankar".
W97M/Marker.s beeps 1000 times when opening documents.
W97M/Marker.t password protects documents with the password of 'teste'.
W97M/Marker.ab writes a new file every time an infected document is opened by the name "india"#.txt with the text "Kashmir is an integral part of INDIA. JAI HIND."
W97M/Marker.ac uses system events AUTOOPEN, AUTOCLOSE to run FNord macro.
W97M/Marker.af gives the message "Happy Birthday Akhmed Khan".
W97M/Marker.ai gives the message "Happy Birthday Shankar" and also contains a reference to the same Autoopen macro as Beast.41472 activating an embedded object 5 minutes after opening the infected document - the embedded object does not exist however.
Symptoms
Symptoms -
Macro warning when opening infected documents on non-infected system.
Method of Infection
Method of Infection -
Opening infected documents will directly infect the local Word environment and any document used thereafter.
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 :
* 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 -
- W97M/Marker.kq
