File Investigation Report
ISASS.EXE
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Associated Malware Groups
The filename is associated with the malware groups:
- Worm
- Malicious Software
- Internet Chat Worm
File Behavior
ISASS.EXE has been seen to perform the following behavior:
- Executes a Process
- Registers a Dynamic Link Library File
- Opens browser pop ups
- This Process is a file infector which modifies program files to include a copy of the infection
- Uses your PC to connect to Chat rooms
- Found on infected systems and resists interrogation by security products
- The Process is packed and/or encrypted using a software packing process
- Creates a TCP port which listens and is available for communication initiated by other computers
- Sends email using SMTP protocols
- Can examine and send Email using POP3 protocols
- This Process Deletes Other Processes From Disk
- This process creates other processes on disk
- Adds a Registry Key (RUN) to auto start Programs on system start up
- Makes outbound connections to other computers using NETBIOSOUT protocols
- Can communicate with other computer systems using HTTP protocols
- The Process is polymorphic and can change its structure
- Can make outbound communication to other computers, IM chat rooms and other services using IRC protocols
- Writes to another Process's Virtual Memory (Process Hijacking)
ISASS.EXE has been the subject of the following behavior:
- Added as a Registry auto start to load Program on Boot up
- Executed as a Process
- Copied to multiple locations on the system
- Deleted as a process from disk
- Registered as a Dynamic Link Library File
- Created as a new Background Service on the machine
- Created as a process on disk
- Has code inserted into its Virtual Memory space by other programs
- Terminated as a Process
Country Of Origin
The filename ISASS.EXE was first seen on May 16 2007 in the following geographical regions of the Prevx community:
- The UNITED KINGDOM on May 16 2007
- The UNITED STATES on May 16 2007
- FRANCE on Jun 4 2007
- CANADA on Jul 6 2007
- SPAIN on Apr 27 2009
- BRAZIL on Nov 18 2009
File Name Aliases
ISASS.EXE can also use the following file names:
- EXPLORER.EXE
- JIOEAL.EXE
- ALGS.EXE
- DDXHK.EXE
- TUMM.EXE
- FIREWALL.EXE
- MTRU.EXE
- SPOOLSVC.EXE
- FLKNU.EXE
- GWYGIZ.EXE
- IEXPLORE.EXE
- IJNSBZP.EXE
- LOGON.EXE
- MPLK.EXE
- CFNUU.EXE
- DQEDSGU.EXE
- MORTXIDA.EXE
- XGHY.EXE
- WINAMP.EXE
- KYEVGTR.EXE
- LSSAS.EXE
- JXVA.EXE
- CSRS.EXE
- QHNZPUFN.EXE
- KONANG.EXE
- DXFKPFW.EXE
- ZOAKO.EXE
- QVMYOQ.EXE
- AFIXQR.EXE
- HGSDVK.EXE
- EPYI.EXE
- ISTYUGFG.EXE
- GKHASK.EXE
- NDKGPZGY.EXE
- MDWJVB.EXE
- PWMDQYD.EXE
- GGTWXYVH.EXE
- DRMWBWC.EXE
- AXLVPS.EXE
- CILEVB.COM
- HXUKJZKG.EXE
- OYCV.EXE
- DYESRWI.EXE
- SPOOISV.EXE
- KEGGHGYU.EXE
- PTEH.EXE
- MEWOUX.EXE
- XJML.EXE
- WXRPK.EXE
- OQEFUHS.EXE
- SYPEMYJ.EXE
- BEDM.EXE
- AZVZZ.EXE
- TUNU.EXE
- GRDTUHM.EXE
- LTUQK.EXE
- OAALOZ.EXE
- CLNPFRNQ.EXE
- ESKKZOU.EXE
- LOUZMLRW.EXE
- FFDUNG.EXE
- VLPN.EXE
- BKFSPZT.EXE
- BXPFOZN.EXE
- WINIOGON.EXE
- XUEIZW.EXE
- ZOEKBWXE.EXE
- AJEC.EXE
- QNIPXXYB.EXE
- FAGAHPG.EXE
- SQNYYJW.EXE
- WGNKSAR.EXE
- NCUVBOBQ.EXE
- WVKRGFN.EXE
- YHPFMBAB.EXE
- TMIXKPZ.EXE
- UDOIX.EXE
- PVBD.EXE
- EZZZ.EXE
- EVDZ.EXE
- ZIIHK.EXE
- EPCIU.EXE
- NIFLSEWR.EXE
- SBUXELIS.EXE
- JYLIK.EXE
- QKQO.EXE
- WSUL.EXE
- EFTNKDVD.EXE
- ELKNM.EXE
- BTKX.EXE
- BTWYP.EXE
- BZOMI.EXE
- CNZPCNM.EXE
- EHUQGI.EXE
- EOWIO.EXE
- FHNVDTVL.EXE
- FLWMRYMQ.EXE
- ASSW.EXE
- VCSRRBW.EXE
- HCYD.EXE
- DBASE.EXE
- SQUID.EXE
- SYSCLEAN.EXE
- NEW.EXE
- PROGRAMS.EXE
- MUSIC.EXE
- NAJVA.EXE
- NORTONANTIVIRUS2007.EXE
- SOFTWARES.EXE
- ČÍžÞ.EXE
- WIZET.EXE
- RECYCLER.EXE
- āļāļāļāļēāļĢāđāļāļīāļ_TAX.EXE
- TUAMTEAM.EXE
- FINANCE TAX.EXE
- PIC_BOUY.EXE
- PROGRAM.EXE
- DRIVERBACKUP.EXE
- DOWNLOADED VIDEO FILES.EXE
- SUBJECT 3_CODEM-MOI.EXE
- DCIM.EXE
- DRP.EXE
- BROCHURE.EXE
- RAJ.EXE
- NOTES.EXE
- FONTS.EXE
- LINUX.EXE
- UP_AUDIT.EXE
- āđāļāļāļāļĢāļĄ.EXE
- UP ACCOUNT.EXE
- āļāļąāļāļāļąāđāļ āļāļĢāļīāļĐāļąāļ_SUCCESS.EXE
- āđāļāļ āļāļĢāļĄāļŠāļĢāļĢāļāļēāļāļĢ.EXE
- SKA_āđāļāđāļ§.EXE
- PACK UP.EXE
- MICROSOFT OFFICE 2003.EXE
- CYBERLINK.EXE
- PRESIDENTS.EXE
- PALANI PPT1.EXE
- PALANI REPORT.EXE
- INSTALLATION.EXE
- PPT.EXE
- MCAFEE VIRUSSCAN ENTERPRISE V8.5.0I-[FULL][MULTLANG].EXE
- AUTORUN.EXE
- BIOLOGY.EXE
- WINDOWS.EXE
- SOFT WARE.EXE
- PALANNN.EXE
- NEW FOLDER.EXE
- POWER POINT.EXE
- MY PICTURES.EXE
- AIF POWER.EXE
- PICTURE.EXE
- NEED FOR SPEED UNDERGROUND 2.EXE
- SYSTEM.EXE
- MISC.EXE
- DRIVER NEC.EXE
- NEC500DRIVER.EXE
- UNAV.EXE
- VUETAKI.EXE
- MS.CONFIG.EXE
- ASSIGNMENT VOC OT.EXE
- VUETAKI 4.EXE
- ANNA.EXE
- AVG.EXE
- MEDIA.EXE
- FOUND.000.EXE
- MISCELLANOUS.EXE
- FORM 6.EXE
- FOUND.003.EXE
- SHORT TEST ANALYSIS.EXE
- DAILY ATTENDANCE RECORD.EXE
- SHORT TEST.EXE
- DIAGRAMS ON COMPUTER DEVICES.EXE
- FOUND.002.EXE
- MACROMEDIA FLASH PLAYER.EXE
- MODELS.EXE
- READER 8.0.EXE
- CISCO MOD 2 READER.EXE
- OFFICE 2003.EXE
- ACER VERITON 3500 VGA DRIVER.EXE
- D.EXE
- RM.EXE
- TK.EXE
- TC ++.EXE
- E 250 D.EXE
- 34624861.DAT
- 38934672.EXE
Filesizes
The following file size has been seen:
- 60,416 bytes
- 1,980,928 bytes
- 84,992 bytes
- 101,376 bytes
- 234,496 bytes
File Type
The filename ISASS.EXE refers to many versions of an executable program.
File Activity
One or more files with the name ISASS.EXE creates, deletes, copies or moves the following files and folders:
- Deletes c:\windows\system32\Isass.exe
Website Activity
One or more files with the name ISASS.EXE interacts with the following web sites and pages. Web addresses have been deliberately modified to prevent unintentional use.
- TCP:67.43.230.226:9889 Port:7
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