Content
ALS/Bursted
- Type
- Virus
- SubType
- AutoLisp
- Discovery Date
- 12/10/2003
- Length
- Varies
- Minimum DAT
- 4308 (12/10/2003)
- Updated DAT
- 6527 (11/11/2011)
- Minimum Engine
- 5.3.00
- Description Added
- 12/15/2003
- Description Modified
- 07/29/2011 12:08 AM (PT)
Tab Navigation
Characteristics
--------- July 29, 2011---------- Aliases – “ALS/Bursted” is a virus that is written in the AutoLisp scripting language used by AutoCAD. It will be received in the same directory as an AutoCAD drawing file (.dwg). When the drawing file is opened, this file is automatically loaded by AutoCAD which causes the virus to get executed. The following registry Values have been modified. The above mentioned registry entries hides the files in the compromised system. -------------------------------------- -----December 07, 2010----- Some variants have been observed to exhibit the following behavior. This virus will attempt to find, delete and replace the following files in the support path to take advantage of AutoCAD auto-load features: AutoCAD command disabling was not observed with this variant. File Information: Aliases: Characteristics "ALS/Bursted" is a worm written in the AutoCAD AutoLisp scripting language. It may propagate via removable drives or mapped drives. Also, it is designed to download malicious files from websites controlled by the malware author. It takes advantage of the automated loading of FAS files in AutoCAD to start itself. It copies itself into the following locations: Once the system is compromised, it looks for folders that contain .dwg files and it spreads simply by placing the malicious file (acad.fas) in a directory with the DWG files. The following registry key has been added to the system: The worm may connects to the following website to download malicious file from the remote server. It allows the attacker to take complete control over the system and performs the backdoor activity by sending the ICMP ping message to the following ip address. Symptoms - ----------------------------
CHECKEDVALUE = 0
CHECKEDVALUE = 0
DEFAULTVALUE = 0
-----September 28, 2010-----
This threat is detected as ACAD/Bursted. This virus is written in AutoLisp, the language used for scripting in the AutoCAD application. It is found in the file "acad.lsp" located in the current working directory alongside with the *.dwg files. This file is automatically executed on loading the drawing file.
The virus is then copied as "acadapp.lsp" to the AutoCad Support directory and will execute on the startup of the ACAD application.
Three AutoCad commands will be disabled - EXPLODE, XREF and XBIND. The virus will then create define a new command BURST, which will display a message.
Symptoms
BURST command will display a message in chinese.
Method of Infection
Infected "acad.lsp" file.
Removal
All Users:
Please use the following instructions for all supported versions of Windows to remove threats and other potential risks:
2.Update to current engine and DAT files for detection and removal.
3.Run a complete system scan.
Modifications made to the system Registry and/or INI files for the purposes of hooking system startup, will be successfully removed if cleaning with the recommended engine and DAT combination (or higher).
1. Please go to the Microsoft Recovery Console and restore a clean MBR.
On windows XP:
Insert the Windows XP CD into the CD-ROM drive and restart the computer.
When the "Welcome to Setup" screen appears, press R to start the Recovery Console.
Select the Windows installation that is compromised and provide the administrator password
Issue 'fixmbr' command to restore the Master Boot Record
Follow onscreen instructions
Reset and remove the CD from CD-ROM drive.
On Windows Vista and 7:
Insert the Windows CD into the CD-ROM drive and restart the computer.
Click on "Repair Your Computer"
When the System Recovery Options dialog comes up, choose the Command Prompt.
Issue 'bootrec /fixmbr' command to restore the Master Boot Record
Follow onscreen instructions
Reset and remove the CD from CD-ROM drive.
Variants
Variants
N/A
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
- ACAD/Bursted
- ALS.Bursted.A (NAV)
Characteristics
Characteristics -
--------- July 29, 2011---------- Aliases – “ALS/Bursted” is a virus that is written in the AutoLisp scripting language used by AutoCAD. It will be received in the same directory as an AutoCAD drawing file (.dwg). When the drawing file is opened, this file is automatically loaded by AutoCAD which causes the virus to get executed. The following registry Values have been modified. The above mentioned registry entries hides the files in the compromised system. -------------------------------------- -----December 07, 2010----- Some variants have been observed to exhibit the following behavior. This virus will attempt to find, delete and replace the following files in the support path to take advantage of AutoCAD auto-load features: AutoCAD command disabling was not observed with this variant. File Information: Aliases: Characteristics "ALS/Bursted" is a worm written in the AutoCAD AutoLisp scripting language. It may propagate via removable drives or mapped drives. Also, it is designed to download malicious files from websites controlled by the malware author. It takes advantage of the automated loading of FAS files in AutoCAD to start itself. It copies itself into the following locations: Once the system is compromised, it looks for folders that contain .dwg files and it spreads simply by placing the malicious file (acad.fas) in a directory with the DWG files. The following registry key has been added to the system: The worm may connects to the following website to download malicious file from the remote server. It allows the attacker to take complete control over the system and performs the backdoor activity by sending the ICMP ping message to the following ip address. Symptoms - ----------------------------
CHECKEDVALUE = 0
CHECKEDVALUE = 0
DEFAULTVALUE = 0
-----September 28, 2010-----
This threat is detected as ACAD/Bursted. This virus is written in AutoLisp, the language used for scripting in the AutoCAD application. It is found in the file "acad.lsp" located in the current working directory alongside with the *.dwg files. This file is automatically executed on loading the drawing file.
The virus is then copied as "acadapp.lsp" to the AutoCad Support directory and will execute on the startup of the ACAD application.
Three AutoCad commands will be disabled - EXPLODE, XREF and XBIND. The virus will then create define a new command BURST, which will display a message.
Symptoms
Symptoms -
BURST command will display a message in chinese.
Method of Infection
Method of Infection -
Infected "acad.lsp" file.
Removal -
Removal -
All Users:
Please use the following instructions for all supported versions of Windows to remove threats and other potential risks:
2.Update to current engine and DAT files for detection and removal.
3.Run a complete system scan.
Modifications made to the system Registry and/or INI files for the purposes of hooking system startup, will be successfully removed if cleaning with the recommended engine and DAT combination (or higher).
1. Please go to the Microsoft Recovery Console and restore a clean MBR.
On windows XP:
Insert the Windows XP CD into the CD-ROM drive and restart the computer.
When the "Welcome to Setup" screen appears, press R to start the Recovery Console.
Select the Windows installation that is compromised and provide the administrator password
Issue 'fixmbr' command to restore the Master Boot Record
Follow onscreen instructions
Reset and remove the CD from CD-ROM drive.
On Windows Vista and 7:
Insert the Windows CD into the CD-ROM drive and restart the computer.
Click on "Repair Your Computer"
When the System Recovery Options dialog comes up, choose the Command Prompt.
Issue 'bootrec /fixmbr' command to restore the Master Boot Record
Follow onscreen instructions
Reset and remove the CD from CD-ROM drive.
Variants
Variants -
N/A