W32/Sober.T Worm

 Information about the W32/Sober.T Worm:

W32/Sober.T is an email worm. This worm is a variant of W32/Sober. The worm will infect Windows systems and spreads through email.

The infected email carries a spoofed 'From' address picked up randomly from the infected system.

The subject of the infected mail will be either in English or German language.

The subject of the mail in English will be as follows;

Registration Confirmation

The subject of the mail in German will be as follows;

Haben Sie diese EMail verschickt?

The body of the infected mail will be either in English or German language.

The body of the mail in English will be as follows;

Thanks for your registration.
Your data are saved in the zipped Word.doc file!

The body of the mail in German will be as follows;

Um es vorweg zu sagen: Ich bin kurz davor eine Anzeige gegen sie zu erstatten!
Sie spinnen ja wohl! Die E-Mmailhat meine Tochter gelesen!!!!!!
Ich habe Ihnen diese Word-Text Datei zu meiner Entlastung zurueckgeschickt.
Es waere von Vorteil, wenn Sie sich dazu aeussern wuerden!!

The infected attachment will be any one of the following;

registration.zip
Word-Text.zip

Upon execution of the infected attachment, the worm drops a file services.exe in the Windows folder.

It also drops the following files in the Windows System folder.

nonrunso.ber
bbvmwxxf.hml
rubezahl.rub
gdfjgthv.cvq
runstop.rst
langeinf.lin

It modifies the Windows registry at the following locations to load itself during next startup;

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

To propagate itself, the worm scans the files with the following extensions and collects all the available email addresses from the infected system.

slk, inbox, imb, csv, bak, imh, xhtml, imm, imh, cms, nws, vcf, ctl, dhtm, cgi, pp, ppt, msg, jsp, oft, vbs, uin, ldb, abc, php, phtm, stm, pmr, pst, cfg, mdw, mbx, mdx, mda, adp, nab, fdb, vap, dsp, ade, sln, dsw, mde, frm, bas, adr, cls, ini, ldif, log, mdb, xml, wsh, tbb, abx, abd, adb, pl, rtf, mmf, doc, ods, nch, xls, nsf, txt, wab, eml, asp, shtml and dbx.

It saves all collected email addresses in concon.www file, which is created by this worm in the Windows folder.

The worm mails itself to these addresses using its own SMTP engine.

This worm first appeared on November 15, 2005.

 Other names of W32/Sober.T Worm:

This Worm is also known as W32/Sober.t@MM.