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Virus Profile: Jasmine

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Virus Profile information details
Risk Assessment: Home Low | Corporate Low
Date Discovered: 1/1/1995
Date Added: 1/15/1995
Origin: Unknown
Length: 269 Bytes
Type: Virus
Subtype: File Infector
DAT Required: 4002
Removal Instructions
   
 
 
   

Description

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.

Indication of Infection

Each time an infected file is executed, the virus displays the following message and returns the user to the DOS prompt:

"The Jasmine Virus is loose, better protect your computer.Beware! There now it works! [JD]"

In addition to the text string indicated above as the virus' message, the following additional text strings are found within the viral code in all infected files:

"*.exe"
"Admiral Bailey [YAM]"

Files infected with the Jasmine virus have the first 269 bytes overwritten with the Jasmine viral code, thus permanently corrupting the file. The file's date and time in the DOS disk directory listing are updated to the current system date and time of infection.

Methods of Infection

The only way to infect a computer with a file infecting virus is to execute an infected file on the computer. The infected file may come from a multitude of sources including: floppy diskettes, downloads through an online service, network, etc. Once the infected file is executed, the virus may activate.
   

Virus Characteristics

Jasmine is an overwriting, file infecting virus. It does not become memory resident. It infects and corrupts .EXE files.

Each time a file infected with the Jasmine virus is executed, this virus infects the first three .EXE files in the current directory.

Additional Comments:
The Jasmine virus was received in January, 1995. Its origin or point of isolation is unknown. Jasmine is a non-resident, direct action overwriting virus which permanently corrupts the .EXE files it infects. When a program infected with the Jasmine virus is executed, this virus will infect the first three .EXE files located in the current directory, and then display the following message and return the user to the DOS prompt: "The Jasmine Virus is loose, better protect your computer.Beware! There now it works! [JD]" Files infected with the Jasmine virus will have the first 269 bytes overwritten with the Jasmine viral code, thus permanently corrupting the host program. The file's date and time in the DOS disk directory listing will have been updated to the current system date and time when infection occurred. In addition to the text string indicated above as the virus' message, the following additional text strings can be found within the viral code in all infected files: "*.exe" "Admiral Bailey [YAM]" Programs infected with the Jasmine virus cannot be disinfected. They should be deleted and replaced with uninfected copies.

   
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:

SCANPM /ADL /CLEAN /ALL

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.

   

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