File Investigation Report
SEMO2X.EXE
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
SEMO2X.EXE has been seen to perform the following behavior:
- The Process is packed and/or encrypted using a software packing process
- Adds a Registry Key (RUN) to auto start Programs on system start up
- This process creates other processes on disk
- This Process Deletes Other Processes From Disk
- Executes a Process
- Writes to another Process's Virtual Memory (Process Hijacking)
- Registers a Dynamic Link Library File
- Injects code into other processes
- Loads and Executes a System Driver File
- The Process is polymorphic and can change its structure
SEMO2X.EXE has been the subject of the following behavior:
- Created as a process on disk
- Added as a Registry auto start to load Program on Boot up
- Executed as a Process
- Deleted as a process from disk
- Copied to multiple locations on the system
- Executed from Temporary Folders
- Has code inserted into its Virtual Memory space by other programs
Country Of Origin
The filename SEMO2X.EXE was first seen on Jan 3 2008 in the following geographical regions of the Prevx community:
- INDIA on Jan 3 2008
- The EUROPEAN UNION on Jan 3 2008
- CANADA on Jan 3 2008
- The UNITED STATES on Jan 4 2008
- SPAIN on May 7 2008
- The UNITED KINGDOM on Jul 12 2008
File Name Aliases
SEMO2X.EXE can also use the following file names:
- HELP.EXE
- HELP[n].EXE
- HELP.EXE.TMP
- AMVO.EXE
Filesizes
The following file size has been seen:
- 285,662 bytes
- 121,405 bytes
- 192,470 bytes
- 104,542 bytes
- 105,854 bytes
- 266,713 bytes
- 108,032 bytes
File Type
The filename SEMO2X.EXE is used by multiple object types including executable programs,objects.
File Activity
One or more files with the name SEMO2X.EXE creates, deletes, copies or moves the following files and folders:
- Creates c:\docume~1\user\locals~1\temp\ogcscda.dll
- Deletes c:\docume~1\user\locals~1\temp\bel8.sy
- Creates c:\docume~1\user\locals~1\temp\bel8.sys
- Deletes c:\windows\system32\amvo.exe
- Deletes c:\windows\system32\amvo0.dll
- Creates c:\windows\system32\amvo0.dll
- Deletes c:\windows\system32\wincab.sy
- Creates c:\windows\system32\wincab.sys
- Deletes c:\semo2x.ex
- Copies filec:\windows\system32\amvo.exe to c:\semo2x.ex
- Deletes c:\autorun.in
- Creates c:\autorun.in
- Deletes d:\semo2x.ex
- Copies filec:\windows\system32\amvo.exe to d:\semo2x.ex
- Deletes d:\autorun.in
- Creates d:\autorun.in
- Opens/modifes c:\autoexec.bat
Website Activity
One or more files with the name SEMO2X.EXE interacts with the following web sites and pages. Web addresses have been deliberately modified to prevent unintentional use.
- www .om7890 .com / mf2 / help .rar
- TCP:127.0.0.1:1094 Port:19
- Port 80 IP:60.169.1.92
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