File Investigation Report
HGU.BAT
Cloaked MalwarePC Cleanup in 3 Easy Steps
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Associated Malware Groups
The filename is associated with the malware groups:
- Cloaked Malware
- Rootkit
File Behavior
HGU.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
- Creates a new Background Service on the machine
- Loads and Executes a System Driver File
- Copies files
- Registers a Dynamic Link Library File
- Writes to another Process's Virtual Memory (Process Hijacking)
- Executes a Process
- Found on infected systems and resists interrogation by security products
HGU.BAT 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
- Executed as a Process
- Deleted as a process from disk
- Has code inserted into its Virtual Memory space by other programs
- Copied to multiple locations on the system
- This program is often downloaded from the web
- Registered as a Dynamic Link Library File
- Executed from Temporary Folders
Country Of Origin
The filename HGU.BAT was first seen on Jul 1 2008 in the following geographical regions of the Prevx community:
- The UNITED KINGDOM on Jul 1 2008
- MALDIVES on Jul 9 2008
File Name Aliases
HGU.BAT can also use the following file names:
- CKVO.EXE
- DDR.EXE
- HELP.EXE
- 90877401.SVD
- 04185351.BAT
- 55663024.BAT
- 11145598.EXE
- 44713438.BAT
- 33941522.BAT
- 42232398.BAT
- 20482785.EXE
Filesizes
The following file size has been seen:
- 117,526 bytes
- 175,104 bytes
- 117,153 bytes
File Type
The filename HGU.BAT refers to many versions of an executable program.
File Activity
One or more files with the name HGU.BAT creates, deletes, copies or moves the following files and folders:
- Creates c:\docume~1\user\locals~1\temp\98hgb.dll
- Copies filec:\windows\system32\dllcache\vga.sys to c:\windows\system32\drivers\vga.sys
- Deletes c:\windows\system32\ckvo.exe
- Deletes c:\windows\system32\ckvo0.dll
- Creates c:\windows\system32\ckvo0.dll
- Deletes c:\hgu.ba
- Copies filec:\windows\system32\ckvo.exe to c:\hgu.ba
- Deletes c:\autorun.in
- Creates c:\autorun.in
- Deletes d:\hgu.ba
- Copies filec:\windows\system32\ckvo.exe to d:\hgu.ba
- Deletes d:\autorun.in
- Creates d:\autorun.in
- Deletes c:\docume~1\user\locals~1\temp\help1.rar
- Deletes c:\docume~1\user\locals~1\temp\help.ex
- 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
Website Activity
One or more files with the name HGU.BAT interacts with the following web sites and pages. Web addresses have been deliberately modified to prevent unintentional use.
- TCP:127.0.0.1:1093 Port:19
- Port 80 IP:60.169.2.240
- TCP:127.0.0.1:1096 Port:18
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