Full description

Virus:	TR/Kazy.24846.24
Date discovered:	09/06/2011
Type:	Trojan
In the wild:	Yes
Reported Infections:	Low
Distribution Potential:	Low
Damage Potential:	Medium
Static file:	Yes
File size:	181.248 Bytes
MD5 checksum:	34F129596DE430B1A902272EB62FDD01
VDF version:	7.11.09.128 - Thursday, June 9, 2011
IVDF version:	7.11.09.128 - Thursday, June 9, 2011

General Method of propagation:
   • No own spreading routine

Aliases:
   • DrWeb: Trojan.DownLoader3.7697
   • Norman: W32/Crypt.AVAU

Platforms / OS:
   • Windows 2000
   • Windows XP
   • Windows 2003
   • Windows Vista
   • Windows 7

Side effects:
   • Third party control
   • Drops files
   • Lowers security settings
   • Registry modification
   • Steals information

Files It copies itself to the following location:
• %TEMPDIR%\csrss.exe

It modifies the following file:
• %APPDATA%\Mozilla\Firefox\Profiles\f81lb9un.default\prefs.js
As a result various security mechanisms are disabled.

The following file is created:

– %APPDATA%\%hex values%.%hex values% Contains parameters used by the malware.

Registry One of the following values is added in order to run the process after reboot:

– [HKCU\Software\Microsoft\Windows NT\CurrentVersion\Windows]
   • "Load"="%TEMPDIR%\csrss.exe"

The following registry key is added:

– [HKEY_CURRENT_CONFIG\Software\Microsoft\windows\CurrentVersion\
   Internet Settings]
   • "ProxyEnable"=dword:00000001

The following registry key is changed:

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
   New value:
   • "MigrateProxy"=dword:00000001
   • "ProxyEnable"=dword:00000001
   • "ProxyServer"="http=127.0.0.1:%number%"

Process termination Processes with one of the following strings are terminated:
   • Alwil Software*; avast; Avast*; AvastUI.exe; AVG; avgnt.exe; avira;
      Avira*; BitDefender; ccsvchst.exe; Dr.Web; ESET NOD32; Kaspersky;
      mcafee; McAfee*; mcagent.exe; none; norton; Norton*; Symantec*

Backdoor The following ports are opened:

– %executed file% on a random TCP port in order to provide a proxy server.
– %executed file% on a random TCP port in order to provide backdoor capabilities.

Stealing – It uses a network sniffer that checks for the following string:
• google

Miscellaneous Mutex:
It creates the following Mutex:
• {5D92BB9F-9A66-458f-ACA4-66172A7016D4}

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

说明添加者： Andrei Ilie 打开 2011年9月1日星期四
说明更新者： Andrei Ilie 打开 2011年9月1日星期四

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