MalwareTeks Blog » Blog Archive » The Threat of Nuclear War (NUWAR) aka Storm Worm is alive and well


 12 Apr 2007 @ 9:07 PM 
 

The Threat of Nuclear War (NUWAR) aka Storm Worm is alive and well

 

Normally when I receive Spam mail in my admin account for the site, I simply delete it; but today one particular spam mail caught my attention. Subject: Spyware Alert!, text of the message was simply AbuseReport with 2 attachments: AbuseReport.gif and patch-2135.zip.

OK, now you have my attention.

AbuseReport

patch-2135.zip contains patch2135.exe

Using a password protected archive is a fairly common tactic for slipping Malware past email AV scanners.

Complete scanning result of “patch-2135.exe”, received in VirusTotal at 04.12.2007, 20:46:37 (CET).

Antivirus Version Update Result
AhnLab-V3 2007.4.12.0 04.12.2007 no virus found
Authentium 4.93.8 04.12.2007 W32/Trojan.AEJW
Avast 4.7.936.0 04.11.2007 no virus found
AVG 7.5.0.447 04.12.2007 no virus found
BitDefender 7.2 04.12.2007 Trojan.Peed.Gen
CAT-QuickHeal 9.00 04.12.2007 (Suspicious) - DNAScan
ClamAV devel-20070312 04.12.2007 Trojan.Small-1641
DrWeb 4.33 04.12.2007 no virus found
eSafe 7.0.15.0 04.12.2007 Suspicious Trojan/Worm
eTrust-Vet 30.7.3562 04.12.2007 Win32/Pecoan.R
Ewido 4.0 04.12.2007 no virus found
FileAdvisor 1 04.12.2007 no virus found
Fortinet 2.85.0.0 04.12.2007 suspicious
F-Prot 4.3.2.48 04.12.2007 W32/Trojan.AEJW
F-Secure 6.70.13030.0 04.12.2007 Email-Worm.Win32.Zhelatin.ct
Ikarus T3.1.1.5 04.12.2007 no virus found
Kaspersky 4.0.2.24 04.12.2007 Email-Worm.Win32.Zhelatin.ct
McAfee 5006 04.11.2007 no virus found
Microsoft 1.2405 04.12.2007 no virus found
NOD32v2 2184 04.12.2007 Win32/Nuwar.Gen
Norman 5.80.02 04.12.2007 no virus found
Panda 9.0.0.4 04.12.2007 Suspicious file
Prevx1 V2 04.12.2007 no virus found
Sophos 4.16.0 04.12.2007 no virus found
Sunbelt 2.2.907.0 04.07.2007 no virus found
Symantec 10 04.12.2007 Trojan.Packed.13
TheHacker 6.1.6.088 04.09.2007 no virus found
VBA32 3.11.3 04.12.2007 no virus found
VirusBuster 4.3.7:9 04.12.2007 no virus found
Webwasher-Gateway 6.0.1 04.12.2007 Trojan.Small.DBY.BW
Aditional Information
File size: 40649 bytes
MD5: 6335fea1792a2f4523323d54acc14f77
SHA1: a5d5bc891a0994cba2952710707b19e98fcebd7b

Yep, Storm Worm and a new variant.

W32.Worm.Nuwar.Gen

Name: W32.Worm.Nuwar.Gen
Aliases: Trojan.Peed.Gen (BitDefender), Email-Worm.Win32.Zhelatin (Fortinet), Email-Worm.Win32.Zhelatin (Kaspersky), Win32/Nuwar.gen (Nod32), W32.Mixor (Symantec)
Brief description: W32.Worm.Nuwar.Gen is a mass-mailing worm which harvests email addresses from the affected system and then send a copy of itself to these harvested email addresses. Additionally, it injects code into executable files (.exe and .scr) so that when these modified executables are executed, a copy of W32.Worm.Nuwar will be executed. Furthermore, it drops an additional trojan component which has a rootkit capability and also capable of downloading additional files, this dropped trojan component is known as W32.Trojan.Peacomm.
Affected Platforms:
  • Microsoft Windows 2000
  • Microsoft Windows XP
  • Microsoft Windows Server 2003

The Subject of the email, so far, states:
“Worm Alert!”
“Worm Detected”
“Virus Alert”
“ATTN!”
“Trojan Detected!”
“Worm Activity Detected!”
“Spyware Detected!”
“Dream of You”
“Virus Activity Detected!”

There are two attachments, one being is an image with ‘panic-worded text’, and the other is a password protected zip file, whose password is revealed in the image.

The zip file names, so far:

“patch-<random 4 or 5 digit number>.zip”
“bugfix-<random 4 or 5 digit number>.zip”
“hotfix-<random 4 or 5 digit number>.zip”
“removal-<random 4 or 5 digit number>.zip”

If you have received one of these email messages and have fallen prey to their tactics and are now infected. Please see our Malware Cleaning Guide and post in our Malware Removal Forum. There is a RootKit element of this infection that will require special handling to remove.

You must be a registered member of our site; in order to post in the Forums. This is a Free service to all. Registration is simply required to keep the spam bots from flooding the site.

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Tags Tags:
Categories: Uncategorized
Posted By: ShadowPuterDude
Last Edit: 13 Apr 2007 @ 05 23 PM
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Responses to this post » (One Total)

 
  1. Computer world security » The Threat of Nuclear War (NUWAR) aka Storm Worm is alive and well said...
    11:53 pm - April 12th, 2007

    [...] Read more at ShadowPuterDude [...]

 

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