talaus 0 Newbie Poster

Hello,
I have previously consulted on daniweb.......i have yet another problem now......
there seems to be some malware or something on my comp.......i recently installed a fresh XP2 after removing the previous version(coz it was not booting with that version, had no other way).......firstly avast is not updating and does not respond if i click the update button.......it shows viruses every time i startup(i del them but they come up the next time).......it asks that there is a suspicious file in WINDOWS/....(found using heuristic method) which may be a malware........so i used MBAM to scan, it showed some malware and i deleted them but they recur.....i get this DCOM Exploit fomr 59.93.26.(so on) from time to time and thr is this Generic Host Process for Win32 Services error minutes after i boot......had to reboot thrice before mailing coz the net goes down 1-2 mins after the message appears.....sound goes down and out(no sound system, it says).........

any help is appreciated.........my MBAM log is as follows........

Malwarebytes' Anti-Malware 1.38
Database version: 2318
Windows 5.1.2600 Service Pack 2

6/22/2009 11:09:34 PM
mbam-log-2009-06-22 (23-09-34).txt

Scan type: Full Scan (C:\|D:\|E:\|F:\|G:\|)
Objects scanned: 251016
Time elapsed: 32 minute(s), 56 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 0
Registry Values Infected: 1
Registry Data Items Infected: 4
Folders Infected: 0
Files Infected: 4

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
(No malicious items detected)

Registry Values Infected:
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cdoosoft (Trojan.Agent) -> Quarantined and deleted successfully.

Registry Data Items Infected:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\Hidden\SHOWALL\CheckedValue (Hijack.System.Hidden) -> Bad: (0) Good: (1) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center\AntiVirusDisableNotify (Disabled.SecurityCenter) -> Bad: (1) Good: (0) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center\FirewallDisableNotify (Disabled.SecurityCenter) -> Bad: (1) Good: (0) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center\UpdatesDisableNotify (Disabled.SecurityCenter) -> Bad: (1) Good: (0) -> Quarantined and deleted successfully.

Folders Infected:
(No malicious items detected)

Files Infected:
C:\WINDOWS\system32\olhrwef.exe (Trojan.Agent) -> Quarantined and deleted successfully.
c:\WINDOWS\system32\nmdfgds0.dll (Spyware.OnlineGames) -> Quarantined and deleted successfully.
C:\autorun.inf (Worm.Autorun) -> Quarantined and deleted successfully.
C:\sm.exe (Worm.Autorun) -> Quarantined and deleted successfully.


BUT THESE SEEM TO REAPPEAR......i bootscanned with avast twice.........my latest MBAM log........

Malwarebytes' Anti-Malware 1.38
Database version: 2318
Windows 5.1.2600 Service Pack 2

6/23/2009 3:03:21 PM
mbam-log-2009-06-23 (15-03-21).txt

Scan type: Quick Scan
Objects scanned: 101211
Time elapsed: 6 minute(s), 6 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 0
Registry Values Infected: 0
Registry Data Items Infected: 3
Folders Infected: 0
Files Infected: 0

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
(No malicious items detected)

Registry Values Infected:
(No malicious items detected)

Registry Data Items Infected:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center\AntiVirusDisableNotify (Disabled.SecurityCenter) -> Bad: (1) Good: (0) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center\FirewallDisableNotify (Disabled.SecurityCenter) -> Bad: (1) Good: (0) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center\UpdatesDisableNotify (Disabled.SecurityCenter) -> Bad: (1) Good: (0) -> Quarantined and deleted successfully.

Folders Infected:
(No malicious items detected)

Files Infected:
(No malicious items detected)


THIS IS MY HIJACKTHIS LOG.........Not able to do it!.......the log is stuck at 'O4 registry and start menu autoruns'......

:(

Dani AI

Generated

For : the symptoms you describe (repeated removals, AV update failures and autorun-style return of items after a fresh XP install) point to a persistent reinfection vector rather than a single removable file. Common causes are infected removable media or installer media, a compromised router/DNS, or a boot‑sector/rootkit that survives a normal running‑OS scan. Because Windows XP is out of support, any internet‑connected XP system is at extra risk and harder to clean reliably.

Immediate, practical steps: boot the PC from trusted rescue media on USB/CD and run a full offline scan (this lets scanners remove items that hide while Windows is running); disconnect and then scan every USB drive and external disk on a known-clean machine before reconnecting to the infected PC; reset the router to factory defaults and reflash/update firmware if available, then change its admin password and DNS settings; use Autoruns (Sysinternals) to inspect startup entries from a clean account or Safe Mode rather than relying only on HijackThis; disable Autorun/autoplay systemwide while cleaning.

If the infection survives those measures, back up personal data (only documents, pictures — not executables), wipe the disk and reinstall from verified, clean media or migrate to a supported OS. If Avast refuses to update on the infected machine, download definition updates on a clean PC or use a different reputable rescue scanner. Keep all tools up to date and avoid reconnecting unscanned removable media.

Authoritative how‑to and tool pages: Sysinternals Autoruns (Microsoft Sysinternals), an actionable cleanup walkthrough (), and vendor support for offline scans/updates (Avast support, Malwarebytes support).

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