File Investigation Report
SIINST.EXE
Cloaked MalwarePC Cleanup in 3 Easy Steps
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Associated Malware Groups
The unsafe files using this name are associated with the malware group:
- Cloaked Malware
File Behavior
SIINST.EXE has been seen to perform the following behavior:
- Executes Processes stored in Temporary Folders
- Creates system tray popups, messages, errors and security warnings
- The Process is polymorphic and can change its structure
- Writes to another Process's Virtual Memory (Process Hijacking)
- Executes a Process
SIINST.EXE has been the subject of the following behavior:
- Has code inserted into its Virtual Memory space by other programs
- Executed as a Process
- Created as a process on disk
- Deleted as a process from disk
- Executed by Internet Explorer
- Executed from Temporary Folders
- Terminated as a Process
Country Of Origin
The filename SIINST.EXE was first seen on Mar 27 2008 in the following geographical regions of the Prevx community:
- SPAIN on Mar 27 2008
- The EUROPEAN UNION on Mar 27 2008
- The UNITED KINGDOM on May 13 2008
- MEXICO on May 13 2008
- FRANCE on Jul 31 2008
- GREAT BRITAIN on Nov 26 2008
- PHILIPPINES on Nov 21 2009
File Name Aliases
SIINST.EXE can also use the following file names:
- SIINST[n].EXE
- SIINST(n).EXE
- SIINST(1).EXE
- FSM160.TMP
- FSMF4B0.TMP
- FSM567.TMP
- FSM4E.TMP
- SIINST[1].EXE
- SIINST[2].EXE
- FSMDE.TMP
- SOFTWARETOINFORMYOUUPDATEST.EXE
- FREE D
Filesizes
The following file size has been seen:
- 665,724 bytes
- 744,211 bytes
- 574,964 bytes
- 655,551 bytes
- 653,350 bytes
File Type
The filename SIINST.EXE refers to many versions of an executable program.
File Activity
One or more files with the name SIINST.EXE creates, deletes, copies or moves the following files and folders:
- Creates c:\docume~1\user\locals~1\temp\is-3ehoc.tmp\is-QC704.tmp
- Creates c:\docume~1\user\locals~1\temp\is-mfsdd.tmp\_isetup\_RegDLL.tmp
- Creates c:\docume~1\user\locals~1\temp\is-mfsdd.tmp\_isetup\_shfoldr.dll
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