Virus:TR/Spy.Zb.ae.118784
Date discovered:14/05/2010
Type:Trojan
In the wild:Yes
Reported Infections:Low to medium
Distribution Potential:Low to medium
Damage Potential:Low to medium
Static file:Yes
File size:118.784 Bytes
MD5 checksum:4dc14290fb2cb22e11e3a1d24aa09dc1
VDF version:7.10.03.22
IVDF version:7.10.07.108 - Friday, May 14, 2010

 General Method of propagation:
   • Peer to Peer


Aliases:
   •  Bitdefender: Trojan.Generic.4448808
   •  Panda: Trj/Sinowal.XHI
   •  Eset: Win32/Spy.Zbot.YW


Platforms / OS:
   • Windows 2000
   • Windows XP
   • Windows 2003


Side effects:
   • Drops malicious files
   • Registry modification
   • Makes use of software vulnerability
      •  CVE-2007-1204
      •  MS07-019

 Files It copies itself to the following location:
   • %SYSDIR%\sdra64.exe



The following files are created:

– %SYSDIR%\lowsec\user.ds
– %SYSDIR%\lowsec\local.ds
– %SYSDIR%\lowsec\user.ds.lll

 Registry It creates the following entry in order to bypass the Windows XP firewall:

– [HKLM\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\
   FirewallPolicy\StandardProfile]
   • "EnableFirewall"=dword:0x00000000



The following registry keys are added:

– [HKEY_USERS\S-1-5-20\SOFTWARE\Microsoft\
   Protected Storage System Provider\S-1-5-20]
   • "Migrate"=dword:0x00000002

– [HKEY_USERS\S-1-5-20\Software\Microsoft\
   Protected Storage System Provider\S-1-5-20\Data 2\Windows]
   • "Value"=hex:01,00,00,00,1C,00,00,00,03,00,00,00,6D,DB,FE,19,ED,B6,6C,F2,56,86,31,BD,12,FB,6F,BB,00,86,57,A4,41,28,EB,06,10,00,00,00,89,3D,50,AD,A5,CF,68,A8,24,AE,9C,50,4F,CE,FB,3C,14,00,00,00,C6,6E,5C,0C,61,D1,67,62,E7,97,8F,47,ED,6F,87,F9,41,C0,9B,C5

– [HKEY_USERS\S-1-5-19\Software\Microsoft\Windows NT\CurrentVersion\
   Network]
   • "UID"="%computer name%_7875768FCFF3ECE1"

– [HKEY_USERS\.DEFAULT\software\microsoft\windows\currentversion\
   explorer\{4776C4DC-E894-7C06-2148-5D73CEF5F905}]
   • "{3039636B-5F3D-6C64-6675-696870667265}"=hex:F7,09,F2,0D
   • "{33373039-3132-3864-6B30-303233343434}"=hex:F7,09,F2,0D
   • "{6E633338-267E-2A79-6830-386668666866}"=hex:F7,09,F2,0D

– [HKEY_USERS\.DEFAULT\Software\Microsoft\
   Protected Storage System Provider\S-1-5-18\Data 2\Windows]
   • "Value"=hex:01,00,00,00,1C,00,00,00,03,00,00,00,2C,3F,19,91,9B,FA,E1,E9,3C,EC,47,57,9D,58,B0,8C,CE,E0,C2,55,B3,A0,92,BF,10,00,00,00,88,F2,ED,F5,9C,51,81,3E,99,80,43,85,7D,A5,4F,7D,14,00,00,00,86,B4,0A,71,D5,43,63,CA,5C,FF,9F,0E,13,1B,E5,E6,EF,AA,5D,4A

– [HKEY_USERS\.DEFAULT\software\microsoft\windows\currentversion\
   explorer\{43BF8CD1-C5D5-2230-7BB2-98F22C2B7DC6}]
   • "{3039636B-5F3D-6C64-6675-696870667265}"=hex:F7,09,F2,0D
   • "{33373039-3132-3864-6B30-303233343434}"=hex:F7,09,F2,0D
   • "{6E633338-267E-2A79-6830-386668666866}"=hex:F7,09,F2,0D

– [HKEY_USERS\.DEFAULT\SOFTWARE\Microsoft\
   Protected Storage System Provider\S-1-5-18]
   • "Migrate"=dword:0x00000002

– [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Network]
   • "UID"="%computer name%_7875768FCFF3ECE1"

– [HKEY_USERS\S-1-5-20\Software\Microsoft\Windows NT\CurrentVersion\
   Network]
   • "UID"="%computer name%_7875768FCFF3ECE1"



The following registry keys are changed:

– [HKEY_USERS\.DEFAULT\Software\Microsoft\Windows NT\CurrentVersion\
   Winlogon]
   New value:
   • "ParseAutoexec"="1"

– [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
   New value:
   • "userinit"="%SYSDIR%\userinit.exe,%SYSDIR%\sdra64.exe,"

– [HKEY_USERS\S-1-5-20\Software\Microsoft\Windows NT\CurrentVersion\
   Winlogon]
   New value:
   • "ParseAutoexec"="1"

 P2P In order to infect other systems in the Peer to Peer network community the following action is performed:   It retrieves shared folders by querying the following registry keys:
   • software\flashfxp\3
   • software\ghisler\total commander
   • software\ipswitch\ws_ftp
   • software\far\plugins\ftp\hosts
   • software\far2\plugins\ftp\hosts
   • software\martin prikryl\winscp 2\sessions
   • software\ftpware\coreftp\sites
   • software\smartftp\client 2.0\settings\general\favorites


 Stealing It tries to steal the following information:

– A logging routine is started after a website is visited:
   • https://onlineeast.bankofamerica.com/cgi-bin/ias/*/GotoWelcome

 Injection – It injects itself as a remote thread into a process.

    Process name:
   • winlogon.exe



– It injects itself as a remote thread into a process.

    Process name:
   • svchost.exe



– It injects itself as a remote thread into a process.

It is injected into all processes.


 Miscellaneous Accesses internet resources:
   • http://www.oomseekerss.ru/img/**********


Mutex:
It creates the following Mutexes:
   • _AVIRA_2110
   • _AVIRA_2109
   • _AVIRA_2108
   • _AVIRA_2101
   • _AVIRA_21099

 File details Programming language:
 The malware program was written in MS Visual C++.


Runtime packer:
In order to aggravate detection and reduce size of the file it is packed with a runtime packer.

Description inserted by Petre Galan on Friday, February 4, 2011
Description updated by Petre Galan on Friday, February 4, 2011

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