File Investigation Report
KVOSOFT.EXE
Cloaked MalwarePC Cleanup in 3 Easy Steps
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Associated Malware Groups
The filename is associated with the malware groups:
- Cloaked Malware
- Malicious Software
- Fraudulent Security Program
File Behavior
KVOSOFT.EXE has been seen to perform the following behavior:
- The Process is packed and/or encrypted using a software packing process
- This process creates other processes on disk
- Executes a Process
- Registers a Dynamic Link Library File
- This Process Deletes Other Processes From Disk
- Creates a new Background Service on the machine
- Loads and Executes a System Driver File
- Copies files
- Injects code into other processes
- The Process is polymorphic and can change its structure
KVOSOFT.EXE has been the subject of the following behavior:
- Added as a Registry auto start to load Program on Boot up
- Created as a process on disk
- Copied to multiple locations on the system
- Deleted as a process from disk
- Executed as a Process
- Has code inserted into its Virtual Memory space by other programs
- This program is often downloaded from the web
- Registered as a Dynamic Link Library File
- Executed from Temporary Folders
Country Of Origin
The filename KVOSOFT.EXE was first seen on May 20 2008 in the following geographical regions of the Prevx community:
- The UNITED KINGDOM on May 20 2008
- KOREA, REPUBLIC OF on Jul 23 2008
- COLOMBIA on Oct 4 2008
- The EUROPEAN UNION on Oct 4 2008
File Name Aliases
KVOSOFT.EXE can also use the following file names:
- B3T39GI.COM
- LL.EXE
- DPTTWP~1.CMD
- 12605929.SVD
- DPTTMR~1.COM
- OVF9Q1.BAT
- 73246276.SVD
- DPTTWI~1.COM
- 0Q.BAT
- DPTTWR~1.CMD
- N.EXE
- TTR.EXE
- DPTTWO~1.COM
- BACKUP/2SX0DF1F.EXE
Filesizes
The following file size has been seen:
- 159,515 bytes
- 166,772 bytes
- 744,595 bytes
- 164,573 bytes
- 154,048 bytes
- 179,808 bytes
- 154,185 bytes
File Type
The filename KVOSOFT.EXE refers to many versions of an executable program.
File Activity
One or more files with the name KVOSOFT.EXE creates, deletes, copies or moves the following files and folders:
- Creates c:\windows\system32\wuauclt.exe
- Creates c:\windows\system32\drivers\klif.sys
- Deletes c:\windows\system32\drivers\klif.sys
- Deletes c:\windows\system32\kvosoft.exe
- Deletes c:\windows\system32\ulso0.dll
- Creates c:\windows\system32\ulso0.dll
- Deletes c:\windows\system32\sool0.dll
- Creates c:\windows\system32\sool0.dll
- Deletes c:\b3t39gi.co
- Copies filec:\windows\system32\kvosoft.exe to c:\b3t39gi.co
- Deletes c:\autorun.in
- Creates c:\autorun.in
- Deletes d:\b3t39gi.co
- Copies filec:\windows\system32\kvosoft.exe to d:\b3t39gi.co
- Deletes d:\autorun.in
- Creates d:\autorun.in
- Deletes c:\docume~1\user\locals~1\temp\ll1.rar
- Opens/modifes c:\autoexec.bat
- Creates c:\docume~1\user\locals~1\temp\ll1.rar
- Deletes c:\docume~1\user\locals~1\temp\ll.exe
- Creates c:\docume~1\user\locals~1\temp\ll.exe
- Copies filec:\docume~1\user\locals~1\temp\ll.exe to c:\windows\system32\kvosoft.exe
- Deletes c:\windows\system32\sool1.dll
- Creates c:\windows\system32\sool1.dll
Website Activity
One or more files with the name KVOSOFT.EXE interacts with the following web sites and pages. Web addresses have been deliberately modified to prevent unintentional use.
- TCP:127.0.0.1:1084 Port:18
- Port 80 IP:60.169.0.168
- TCP:127.0.0.1:1087 Port:18
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