File Investigation Report
LSSAS.EXE
System Back DoorPC Cleanup in 3 Easy Steps
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Associated Malware Groups
The filename is associated with the malware groups:
- System Back Door
- Cloaked Malware
- Malicious Software
- Worm
File Behavior
LSSAS.EXE has been seen to perform the following behavior:
- The Process is packed and/or encrypted using a software packing process
- Registers a Dynamic Link Library File
- Can communicate with other computer systems using HTTP protocols
- Writes to another Process's Virtual Memory (Process Hijacking)
- Executes a Process
- This process creates other processes on disk
- This Process Deletes Other Processes From Disk
- Adds a Registry Key (RUN) to auto start Programs on system start up
- Automatically changes your firewall settings to allow itself or other programs to communicate over the internet
- Injects code into other processes
- Copies files
- Modifies firewall settings, without user permission so it is not blocked from accessing the Internet
- Uses Instant Messaging to communicate without the user's knowledge
- Uses embeded Instant Message Channel Settings
- This Process is a file infector which modifies program files to include a copy of the infection
- Creates new folders in the file system
- Includes file creation code which could be used to test for interception by security products
- 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
LSSAS.EXE has been the subject of the following behavior:
- Executed as a Process
- Created as a process on disk
- Deleted as a process from disk
- Added as a Registry auto start to load Program on Boot up
- Has code inserted into its Virtual Memory space by other programs
- Terminated as a Process
- Registered as a Dynamic Link Library File
- Copied to multiple locations on the system
- Changes to the file command map within the registry
Country Of Origin
The filename LSSAS.EXE was first seen on May 31 2007 in the following geographical regions of the Prevx community:
- The United States on May 31 2007
- Brazil on May 31 2007
- Canada on May 31 2007
- Philippines on Feb 5 2009
- Germany on Mar 28 2009
- France on Jul 3 2009
- Israel on Jan 27 2010
File Name Aliases
LSSAS.EXE can also use the following file names:
- GAMES.EXE
- HIDDENFOLDER.EXE
- VIDEOS.EXE
- ANTIVIRUSCOLLECTION.EXE
- INSTALLERS.EXE
- MY MUSIC.EXE
- MY PICTURES.EXE
- MY RECEIVED FILES.EXE
- LOGON.EXE
- RAO[n].EXE
- FHU.EXE
- SPOOLSVC.EXE
- EXPLORER.EXE
- RISH.EXE
- ROIT.EXE
- WINAMP.EXE
- ALGS.EXE
- SSMS.EXE
- NEXH.EXE
- INTER.EXE
- RAO.EXE
- XREU.EXE
- SPOOISV.EXE
- VPXIF.EXE
- YBYFF.EXE
- CZOJC.EXE
- HKTCNQ.EXE
- LEMJDMGR.EXE
- EFEK.EXE
- RRZYNVO.EXE
- HUCXXH.EXE
- BFYTBAIQ.EXE
- DJOQFEJY.EXE
- YAFXCJOX.EXE
- HMSJS.EXE
- JTHZFBF.EXE
- OVRCFRYC.EXE
- FXMJVKU.EXE
- XZPCOF.EXE
- DOFM.EXE
- BQOHKS.EXE
- UDOKJEZR.EXE
- UZKGPX.EXE
- MCDDK.EXE
- WIVAKGXN.EXE
- QUED.EXE
- IZHJ.EXE
- LOGON .EXE
- YOHZRVY.EXE
- ALGS.EXE.MWT
- JUNMNYE.EXE
- XEVNKV.EXE
- UNAWWOBT.EXE
- DPBJKOV.EXE
- TDORYKN.EXE
- MQGAJMF.EXE
- YSOMA.EXE
- PYQFE.EXE
- MQEYYX.EXE
- IUQVOIP.EXE
- BLTTJKB.EXE
- ELOABHIT.EXE
- HODUMM.EXE
- TXKBCUY.EXE
- KNFCV.EXE
- XLSQLS.EXE
- IRDN.EXE
- QENLM.EXE
- VDNHZK.EXE
- LUDEDX.EXE
- VUHCUQUA.EXE
- WHCPAV.EXE
- EEIS.EXE
- BDNOECUA.EXE
- KFSNIRWE.EXE
- NLXFX.EXE
- OEXE.EXE
- NFHGBNXY.EXE
- EJFSSN.EXE
- OHSFQX.EXE
- OIBZCLY.EXE
- CZNQN.EXE
- VACFXBVN.EXE
- RKJL.EXE
- RBDPQGV.EXE
- KFQW.EXE
- KLMZEIR.EXE
- IEPBJD.EXE
- POMN.EXE
- DASZNZC.EXE
- DPJRHX.EXE
- YIOQQDHQ.EXE
- OLQRG.EXE
- YQFNSGN.EXE
- FVDJ.EXE
- YPZFBW.EXE
- ARUX.EXE
- YSQX.EXE
- IFPY.EXE
- GVVBQDQ.EXE
- KUYKTQ.EXE
- NOLZWVIC.EXE
- JQVMPF.EXE
- WPMSM.EXE
- KIMNDPMX.EXE
- KKBBR.EXE
- TRUBLNKS.EXE
- VCSKTTD.EXE
- PCBY.EXE
- BTAINYA.EXE
- CMYPZV.EXE
- IOTLM.EXE
- QLSZEAOC.EXE
- TCSYQDMU.EXE
- WFSY.EXE
- TIRVIUA.EXE
- RCBQF.EXE
- PSQRB.EXE
- BVOJRDVP.EXE
- APFKFP.EXE
- BVAH.EXE
- JMENI.EXE
- NPBDP.EXE
- SOTPNYP.EXE
- YIXLRIAV.EXE
- ATYTEYG.EXE
- BITIMQ.EXE
- CMAWP.EXE
- DMQKCZI.EXE
- DPDS.EXE
- EBUJIWQ.EXE
- FHYK.EXE
- FNHYIODV.EXE
- GDHJXEO.EXE
- GDZOEG.EXE
- GLUT.EXE
- GUCYARX.EXE
- ISJDS.EXE
- KALNMN.EXE
- KEPA.EXE
- KSIXU.EXE
- KWMVSUGY.EXE
- KYLNDHB.EXE
- LCIZOEKQ.EXE
- LCXE.EXE
- MAAIFA.EXE
- MZNYHXPJ.EXE
- NIBZMJLR.EXE
- NJIERCJX.EXE
- RBRP.EXE
- RCURHF.EXE
- RLSPJ.EXE
- SOQEDK.EXE
- TJFJ.EXE
- TQFXXMD.EXE
- TZINUWJ.EXE
- CSRS.EXE
- QNDVUB.EXE
- RWLCCCW.EXE
- FIREWALL.EXE
- ISASS.EXE
- EPAKG.EXE
- DIQXJSV.EXE
- SJGOYV.EXE
- MBRGY.EXE
- OCOTHKG.EXE
- IEXPLORE.EXE
- WBORIQH.EXE
- WINIOGON.EXE
- MP3.EXE
- RS3.EXE
Filesizes
The following file size has been seen:
- 69,860 bytes
- 434,176 bytes
- 44,032 bytes
- 286,720 bytes
- 129,536 bytes
- 94,208 bytes
- 131,072 bytes
- 438,272 bytes
File Type
The filename LSSAS.EXE refers to many versions of an executable program.
File Activity
One or more files with the name LSSAS.EXE creates, deletes, copies or moves the following files and folders:
- create folder C:\WINDOWS\system32\Uninstalled
- create folder C:\Program Files\\Folder Collection
- create folder C:\Program Files\Warcraft III
- Creates c:\autorun.in
- Creates d:\autorun.in
- Deletes c:\windows\system32\uninstalled\lssas.ex
- Deletes c:\documents and settings\user\start menu\programs\startup\lssas.ex
- Deletes c:\documents and settings\user\my documents\Videos.ex
- Deletes c:\documents and settings\user\my documents\mp3.ex
- Deletes c:\documents and settings\user\my documents\HiddenFolder.ex
- Deletes c:\documents and settings\user\desktop\Videos.ex
- Deletes c:\documents and settings\user\desktop\mp3.ex
- Deletes c:\documents and settings\user\desktop\Games.ex
- Deletes c:\windows\Installers.ex
- Deletes c:\windows\AntiVirusCollection.ex
- Deletes c:\windows\HiddenFolder.ex
- Deletes c:\windows\system32\Installers.ex
- Deletes c:\windows\system32\AntiVirusCollection.ex
- Deletes c:\windows\system32\HiddenFolder.ex
- Deletes c:\docume~1\user\locals~1\temp\Installers.ex
- Deletes c:\docume~1\user\locals~1\temp\AntiVirusCollection.ex
- Deletes c:\docume~1\user\locals~1\temp\HiddenFolder.ex
- Deletes c:\Videos.ex
- Deletes c:\mp3.ex
- Deletes c:\HiddenFolder.ex
- Deletes c:\autorun.in
- Deletes d:\Videos.ex
- Deletes d:\mp3.ex
- Deletes d:\HiddenFolder.ex
- Deletes d:\autorun.in
- Deletes c:\documents and settings\user\my documents\Games.ex
- Deletes c:\program files\warcraft iii\Videos.ex
- Deletes c:\program files\warcraft iii\mp3.ex
- Deletes c:\program files\warcraft iii\Games.ex
- Deletes c:\Games.ex
- Deletes d:\Games.ex
- Deletes c:\documents and settings\user\my documents\my music\My Music.ex
- Deletes c:\documents and settings\user\my documents\my pictures\My Pictures.ex
- Deletes c:\documents and settings\user\my documents\my received files\My Received Files.ex
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