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Visualizza versione completa : W32/Gaobot.S.worm - Rischio 4 - Update


Giorgius
08-10-2003, 20.37.04
Effetti:
Gaobot.S is a worm with backdoor characteristics that infects only Windows XP/2000/NT computers. Gaobot.S exploits the RPC DCOM and WebDAV vulnerabilities to spread to as many computers as possible.

Gaobot.S also spreads by attempting to copy itself to network shared resources. It gains access to these shared resources by using passwords that are typical or easy to guess.

Once it is run, Gaobot.S connects to a specified IRC server through the port 6667 and waits for control commands. As a backdoor, it allows to obtain information on the affected computer, run files, launch distributed denial of service (DDoS) attacks, upload files by FTP, etc.

Gaobot.S ends processes belonging to antivirus programs, firewalls and system monitoring tools. This leaves the affected computer vulnerable to the attack of other viruses or worms. It also ends the processes of Nachi.A, Autorooter.A, Sobig.F and several variants of Blaster.

If you have a Windows XP/2000/NT computer, it is highly recommendable to download the security patches for the RPC DCOM and WebDAV vulnerabilities from the Microsoft website.


Info:
http://www.pandasoftware.com/virus_info/encyclopedia/overview.aspx?idvirus=41174

Aggiornamento Antivirus al 08.07.03 ;)(Y)

Giorgius
09-10-2003, 18.01.24
Si appena alzato il livello di guardia a "4"...

Probabilmente ci sono in rete molti Pc (aziendali) sprovvisti delle ultime patch Microsoft per le falle del servizio "RPC".
http://www.microsoft.com/security/security_bulletins/ms03-040.asp
http://www.microsoft.com/windows/ie/downloads/critical/828750/download.asp
http://www.kb.cert.org/vuls/id/668380

Per chi usa il Firewall Keryo verranno seganlati dal programma attacchi dall'esterno nelle solite porte "135" e "445"

Per chi non avesse installato la patch di Microsoft, consiglio l'utilizzo dell'utility Gibson "DCOMbobulator" che disabilita il servizio RPC (oltre ad effettuare un test sulla sicurezza della porta "135").
http://grc.com/dcom/
http://grc.com/files/DCOMbob.exe


;)(Y)

Giorgius
09-10-2003, 18.13.33
Questa variante, termina questi eseguibili sul Sistema:

The worm attempts to terminate the following processes:

_AVP32.EXE
_AVPCC.EXE
_AVPM.EXE
ACKWIN32.EXE
ANTI-TROJAN.EXE
APVXDWIN.EXE
AUTODOWN.EXE
AVCONSOL.EXE
AVE32.EXE
AVGCTRL.EXE
AVKSERV.EXE
AVNT.EXE
AVP.EXE
AVP32.EXE
AVPCC.EXE
AVPDOS32.EXE
AVPM.EXE
AVPTC32.EXE
AVPUPD.EXE
AVSCHED32.EXE
AVWIN95.EXE
AVWUPD32.EXE
BLACKD.EXE
BLACKICE.EXE
CFIADMIN.EXE
CFIAUDIT.EXE
CFINET.EXE
CFINET32.EXE
CLAW95.EXE
CLAW95CF.EXE
CLEANER.EXE
CLEANER3.EXE
DVP95.EXE
DVP95_0.EXE
ECENGINE.EXE
ESAFE.EXE
ESPWATCH.EXE
F-AGNT95.EXE
FINDVIRU.EXE
FPROT.EXE
F-PROT.EXE
F-PROT95.EXE
FP-WIN.EXE
FRW.EXE
F-STOPW.EXE
IAMAPP.EXE
IAMSERV.EXE
IBMASN.EXE
IBMAVSP.EXE
ICLOAD95.EXE
ICLOADNT.EXE
ICMON.EXE
ICSUPP95.EXE
ICSUPPNT.EXE
IFACE.EXE
IOMON98.EXE
JEDI.EXE
LOCKDOWN2000.EXE
LOOKOUT.EXE
LUALL.EXE
MOOLIVE.EXE
MPFTRAY.EXE
N32SCANW.EXE
NAVAPW32.EXE
NAVLU32.EXE
NAVNT.EXE
NAVW32.EXE
NAVWNT.EXE
NISUM.EXE
NMAIN.EXE
NORMIST.EXE
NUPGRADE.EXE
NVC95.EXE
OUTPOST.EXE
PADMIN.EXE
PAVCL.EXE
PAVSCHED.EXE
PAVW.EXE
PCCWIN98.EXE
PCFWALLICON.EXE
PERSFW.EXE
RAV7.EXE
RAV7WIN.EXE
RESCUE.EXE
SAFEWEB.EXE
SCAN32.EXE
SCAN95.EXE
SCANPM.EXE
SCRSCAN.EXE
SERV95.EXE
SMC.EXE
SPHINX.EXE
SWEEP95.EXE
TBSCAN.EXE
TCA.EXE
TDS2-98.EXE
TDS2-NT.EXE
VET95.EXE
VETTRAY.EXE
VSCAN40.EXE
VSECOMR.EXE
VSHWIN32.EXE
VSSTAT.EXE
WEBSCANX.EXE
WFINDV32.EXE
ZONEALARM.EXE

Giorgius
10-10-2003, 16.11.55
12:16 MICROSOFT: BALLMER, PIU' SICUREZZA PER GLI UTENTI

(ASCA) - Roma, 10 ott - In occasione della conferenza
inaugurale dedicata ai partner Microsoft a livello mondiale,
che si svolge a New Orleans, il chief executive officer della
societa' statunitense, Steve Ballmer, ha annunciato nuove
tecnologie di sicurezza per i prodotti Microsoft nell'ambito
della strategia Trustworthy Computing Initiative. Ballmer ha
dichiarato che le novita' principali si concentreranno in tre
aree: miglioramento del sistema di distribuzione delle patch,
formazione degli utenti e rafforzamento della sicurezza per
Windows Xp e 2003.