File Investigation Report
9YQUSIG.BAT
Cloaked MalwarePC Cleanup in 3 Easy Steps
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Associated Malware Groups
The filename is associated with the malware group:
- Cloaked Malware
File Behavior
9YQUSIG.BAT 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
- This Process Deletes Other Processes From Disk
- Executes a Process
- Creates a new Background Service on the machine
- Loads and Executes a System Driver File
- Registers a Dynamic Link Library File
- Found on infected systems and resists interrogation by security products
- Uses low level functions to hide itself from the user and from system/security processes
9YQUSIG.BAT has been the subject of the following behavior:
- 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
- Executed from Temporary Folders
- This program is often downloaded from the web
- Registered as a Dynamic Link Library File
- Added as a Registry auto start to load Program on Boot up
Country Of Origin
The filename 9YQUSIG.BAT was first seen on Sep 22 2008 in the following geographical regions of the Prevx community:
- The EUROPEAN UNION on Sep 22 2008
- TURKEY on Sep 22 2008
- SPAIN on Jun 23 2009
File Name Aliases
9YQUSIG.BAT can also use the following file names:
- HELP.EXE
- CKVO.EXE
- IQE68O.BAT
Filesizes
The following file size has been seen:
- 120,832 bytes
- 99,947 bytes
- 178,176 bytes
File Type
The filename 9YQUSIG.BAT refers to many versions of an executable program.
File Activity
One or more files with the name 9YQUSIG.BAT creates, deletes, copies or moves the following files and folders:
- Creates c:\windows\system32\drivers\klif.sys
- Deletes c:\windows\system32\drivers\klif.sys
- Deletes c:\windows\system32\ckvo.exe
- Deletes c:\windows\system32\ckvo0.dll
- Creates c:\windows\system32\ckvo0.dll
- Deletes c:\9yqusig.ba
- Copies filec:\windows\system32\ckvo.exe to c:\9yqusig.ba
- Deletes c:\autorun.in
- Creates c:\autorun.in
- Deletes d:\9yqusig.ba
- Copies filec:\windows\system32\ckvo.exe to d:\9yqusig.ba
- Deletes d:\autorun.in
- Creates d:\autorun.in
- Deletes c:\docume~1\user\locals~1\temp\help1.rar
- Opens/modifes c:\autoexec.bat
- Creates c:\docume~1\user\locals~1\temp\help1.rar
- Deletes c:\docume~1\user\locals~1\temp\help.exe
- Creates c:\docume~1\user\locals~1\temp\help.exe
- Copies filec:\docume~1\user\locals~1\temp\help.exe to c:\windows\system32\ckvo.exe
- Deletes c:\windows\system32\ckvo1.dll
- Creates c:\windows\system32\ckvo1.dll
Website Activity
One or more files with the name 9YQUSIG.BAT interacts with the following web sites and pages. Web addresses have been deliberately modified to prevent unintentional use.
- TCP:127.0.0.1:1074 Port:19
- Port 80 IP:221.1.204.243
- TCP:127.0.0.1:1077 Port:18
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