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Virus Profile: PWS-Zbot.gen.akq

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Virus Profile information details
Risk Assessment: Home Low | Corporate Low
Date Discovered: 8/15/2012
Date Added: 8/15/2012
Origin: N/A
Length: Varies
Type: Trojan
Subtype: Generic
DAT Required: 6804
Removal Instructions
   
 
 
   

Description

This is a Trojan detection. Unlike viruses, trojans do not self-replicate. They are spread manually, often under the premise that they are beneficial or wanted. The most common installation methods involve system or security exploitation, and unsuspecting users manually executing unknown programs. Distribution channels include email, malicious or hacked web pages, Internet Relay Chat (IRC), peer-to-peer networks, etc.

Aliases

Kaspersky - Trojan.Win32.Jorik.Fareit.zc
DrWeb  - Trojan.PWS.Stealer.946
Fortinet - W32/Zbot.AAN!tr
Microsoft - PWS:Win32/Fareit.gen!E

Indication of Infection

Presence of above mentioned files and registry keys
Presence unexpected network connection to the above mentioned IP Address.

Methods of Infection

Trojans do not self-replicate. They are spread manually, often under the premise that the executable is something beneficial. Distribution channels include IRC, peer-to-peer networks, newsgroup postings, email spam, etc.

 

   

Virus Characteristics

“PWS-Zbot.gen.akq” is Trojan gather information, such as password credentials and personal information. The collected data will be sent to the remote attacker. It may try to hack servers using ftp client and download other malicious files to the compromised machine.

Upon Execution, the Trojan creates a file into the below location:

  • %Temp%\abcd.bat

Upon execution the Trojan tries to connect to the following URL to download other payloads and to send the collected data from the compromised machine.

  • hxxp://66.55.[Removed].150:8080/forum/viewtopic.php
  • hxxp://66.55. [Removed].151:8080/forum/viewtopic.php
  • hxxp://hote[Removed]on.com/oTW0P0v.exe
  • hxxp://riso[Removed]eb.netsons.org/vua.exe
  • hxxp://elektrab[Removed]k.cz/hs9HBpbT.exe
  • hxxp://46.252. [Removed].14/cgi-sys/suspendedpage.cgi
  • 150.89.55. [Removed]:8080
  • srv-hg1.ne[Removed]ns.net:http
  • www4.p[Removed]i.cz:http
  • busine[Removed]ck-160-60.on3.ontelecoms.gr:http

When Trojan gets executed, the following registry entries have been added to the system.

  • HKEY_USERS\S-1-5-[Varies]\Software\WinRAR

And the following registry values have been added to the System:

  • HKEY_USERS\S-1-5-[Varies]\Software\WinRAR\
    “HWID”= “7B 35 36 46 32 41 32 41 30 2D 43 30 36 37 2D 34 43 35 34 2D 38 39 38 38 2D 37 42 36 33 34 37 38 39 38 42 37 45 7D”
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\
    “UNCAsIntranet”=”0”
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\
    “AutoDetect”=”1”

And the following registry values have been deleted from the System:

  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName

The following are the information collected from the infected machine and send it to the remote attacker through remote port 8080

  • HostName
  • GetNativeSystemInfo
  • GetLocaleInfoA
  • GetSystemInfo
  • gethostbyname

Captured POST request:

POST %s HTTP/1.0
Host: %s
Accept: */*
Accept-Encoding: identity, *;q=0
Content-Length: %lu
Connection: close
Content-Type: application/octet-stream
Content-Encoding: binary
User-Agent: Mozilla/4.0 (compatible; MSIE 5.0; Windows 98)

The Trojan tries to hack servers using below password list:
• password
• phpbb
• qwerty
• jesus
• abc123
• letmein
• test
• love
• password1
• hello
• monkey
• dragon
• trustno1
• iloveyou
• shadow
• christ
• sunshine
• master
• computer
• princess

The Trojan tries to search and hack a user accessed server using the below mentioned FTP clients with the above commonly used password list.

  • FileZilla
  • BulletProof Software
  • SmartFTP
  • CuteFTP
  • TurboFTP
  • FTP Explorer
  • Frigate3
  • VanDyke
  • FTPRush
  • LeapFTP

 

   

All Users:
Use current engine and DAT files for detection and removal.

Modifications made to the system Registry and/or INI files for the purposes of hooking system startup, will be successfully removed if cleaning with the recommended engine and DAT combination (or higher).