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Worm:Win32/Sality.AU


Worm:Win32/Sality.AU is a worm that spreads a file detected as Virus:Win32/Sality.AU into network shares. Worm:Win32/Sality.AU also drops .LNK files, detected as Exploit:Win32/CplLnk.A, which automatically run the dropped virus.


What to do now

To detect and remove this threat and other malicious software that may be installed in your computer, run a full-system scan with an up-to-date antivirus product such as the following:
 
 
For more information on antivirus software, see http://www.microsoft.com/windows/antivirus-partners/.

Threat behavior

Worm:Win32/Sality.AU is a worm that spreads a file detected as Virus:Win32/Sality.AU into network shares. Worm:Win32/Sality.AU also drops .LNK files, detected as Exploit:Win32/CplLnk.A, which automatically run the dropped virus.
Installation
Worm:Win32/Sality.AU creates the following mutex:
 
  • woemnm593jfe
 
It also creates the following registry entry as part of its installation routine:
 
Adds value: "session"
with data: <numeric value>
To subkey : HKCU\SOFTWARE\zrfke
Spreads via...
Network shares
Worm:Win32/Sality.AU enumerates network resources in the computer to look for network shares. If found, Worm:Win32/Sality.AU drops the following file:
 
~<5 random alphanumeric characters>.tmp - detected as Virus:Win32/Sality.AU
 
for example:
 
\\<network path>\~24e1e.tmp
 
To run the dropped virus, it also drops any of the following .LNK files, which are detected as Exploit:Win32/CplLnk.A:
 
Aline.lnk
AnnaBensonSexvideo.lnk
Anna.lnk
Audra.lnk
Badgirl.lnk
Barbi.lnk
BritneySpearsXXX.lnk
Caitie.lnk
CopyofNewFile.lnk
CopyofNewFolder.lnk
CopyofShortcut.lnk
Drivers.lnk
Fotograf.lnk
Galleryphotos.lnk
Jammie.lnk
JennaElfmansexanaldeepthroat.lnk
Juli.lnk
Julie.lnk
KateBeckinsalenudepictures.lnk
Katrina.lnk
Katrina.lnk
Kelley.lnk
Lisa.lnk
Mandy.lnk
Mary-Anne.lnk
Mary.lnk
MissAmericaPorno.lnk
MyPhotos.lnk
Mybeautifulperson.lnk
Myphotoalbum.lnk
Myphotos.lnk
Myphotos.lnk
NewFolder.lnk
NewShortcut.lnk
ParisHiltonXXXArchive.lnk
Photoalbum.lnk
Picture.lnk
PornoScreensaver.lnk
Rena.lnk
Sara.lnk
Serials.lnkBarrettJacksonnudephotos.lnk
Shortcut.lnk
Tammy.lnk
XXXhardcore.lnk
XXX.lnkXXX
archive.lnk
beautiful.lnk
caroline.lnk
groom.lnk
kate.lnk
kleopatra.lnk
rebecca.lnk
stacy.lnk
 
Analysis by Marianne Mallen

Symptoms

System changes
The following system changes may indicate the presence of this malware:
  • The presence of the following subkey:
    HKCU\SOFTWARE\zrfke
  • The presence of the following files in your network shares:
  • Aline.lnk
    AnnaBensonSexvideo.lnk
    Anna.lnk
    Audra.lnk
    Badgirl.lnk
    Barbi.lnk
    BritneySpearsXXX.lnk
    Caitie.lnk
    CopyofNewFile.lnk
    CopyofNewFolder.lnk
    CopyofShortcut.lnk
    Drivers.lnk
    Fotograf.lnk
    Galleryphotos.lnk
    Jammie.lnk
    JennaElfmansexanaldeepthroat.lnk
    Juli.lnk
    Julie.lnk
    KateBeckinsalenudepictures.lnk
    Katrina.lnk
    Katrina.lnk
    Kelley.lnk
    Lisa.lnk
    Mandy.lnk
    Mary-Anne.lnk
    Mary.lnk
    MissAmericaPorno.lnk
    MyPhotos.lnk
    Mybeautifulperson.lnk
    Myphotoalbum.lnk
    Myphotos.lnk
    Myphotos.lnk
    NewFolder.lnk
    NewShortcut.lnk
    ParisHiltonXXXArchive.lnk
    Photoalbum.lnk
    Picture.lnk
    PornoScreensaver.lnk
    Rena.lnk
    Sara.lnk
    Serials.lnkBarrettJacksonnudephotos.lnk
    Shortcut.lnk
    Tammy.lnk
    XXXhardcore.lnk
    XXX.lnkXXX
    archive.lnk
    beautiful.lnk
    caroline.lnk
    groom.lnk
    kate.lnk
    kleopatra.lnk
    rebecca.lnk
    stacy.lnk

Prevention


Alert level: Severe
First detected by definition: 1.87.582.0
Latest detected by definition: 1.173.2181.0 and higher
First detected on: Jul 26, 2010
This entry was first published on: Jul 30, 2010
This entry was updated on: Apr 17, 2011

This threat is also detected as:
  • Trojan-Dropper.Win32.Sality.b (Kaspersky)
  • Win32/Sality.NBA (ESET)
  • Mal/Sality-D (Sophos)
  • PE_SALITY.LNK-O (Trend Micro)