Virus:W32/Expiro.B
Date discovered:07/11/2007
Type:File infector
In the wild:Yes
Reported Infections:Low
Distribution Potential:Low to medium
Damage Potential:Medium
Static file:No
File size:~110.000 Bytes
IVDF version:7.00.00.170 - Monday, November 5, 2007

 General Method of propagation:
   • Infects files


Aliases:
   •  Symantec: W32.Kakavex
   •  Mcafee: W32/Expiro
   •  Kaspersky: Virus.Win32.Expiro.j
   •  Sophos: W32/Expiro-A
   •  VirusBuster: Win32.Expiro.B
   •  Eset: Win32/Vint.A
   •  Bitdefender: Win32.Kakavex.D

Similar detection:
   •  W32/Expiro.Q
   •  W32/Expirio.A
   •  W32/Expiro.C


Platforms / OS:
   • Windows 95
   • Windows 98
   • Windows 98 SE
   • Windows NT
   • Windows ME
   • Windows 2000
   • Windows XP
   • Windows 2003


Side effects:
   • Infects files
   • Steals information

 Files The following files are created:

– A file that is for temporary use and it might be deleted afterwards:
   • %infected files%.ivr

 File infection Infector type:

Appender - The virus main code is added at the end of the infected file.
– The following sections are added to the infected file:
   • .data
   • .text
   • .bss
   • .data

Damaging - The files may be improperly infected. This results in infected files that are broken and crash.


Stealth:
 No stealth techinques used. It modifies the OEP (Original Entry Point) of the infected file to point to the virus code.


Self Modification:

Encrypted - The virus code inside the infected file is encrypted.


Method:

This direct-action infector actively searches for files.


Infection length:

Approximately 110.000 Bytes


The following files are infected:

By exact path:
   • *.exe

Files in any of the following directories:
   • %all directories%

 Stealing – A logging routine is started after one of the following websites are visited:
   • 53bank.com; banking.halifax-online.co.uk; barclays.com;
      chechenpress.info; crutop.nu; ebay.com; fethard.biz; goldpoll.com;
      gronxplanets.ru; intgold.com; kavkazcenter.com; kgbrelaxclub.ru;
      kidos-bank.ru; master-x.com; myonlineaccounts2.abbeynational.co.uk;
      new.egg.com; olb2.nationet.com; online-business.lloydstsb.co.uk;
      openbank.com; paypal.com; seclab.ru; securitylab.ru; stormpay.com;
      tat-neftbank.ru; totallyfreebanking.com; vendorsname.ws;
      welcome3.smile.co.uk; www.allahabadbank.com; www.b2b-trust.com;
      www.bank-banque-canada.ca; www.bankofindia.com; www.bankofmadura.com;
      www.bbin.ru; www.bmo.com; www.candidateverifier.com; www.cbr.ru;
      www.cibc.com; www.cwbank.com; www.icbank.ru; www.kmb.ru;
      www.lbcdirect.laurentianbank.ca; www.mmbank.ru; www.nbc.ca;
      www.netmagister.com; www.ponziscams.com; www.rbc.com; www.socks.ac;
      www.uniastrum.ru; www.vendorsname.ws; www.vtb.ru; www.worldbank.org;
      www1.hsbc.ca; yambo.biz

 Miscellaneous Mutex:
It creates the following Mutex:
   • kkq-vx_mtx1

Description inserted by Daniel Constantin on Tuesday, March 2, 2010
Description updated by Daniel Constantin on Thursday, March 4, 2010

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