Need help? Ask the community or hire an expert.
Go to Avira Answers
Date discovered:07/07/2010
In the wild:Yes
Reported Infections:Low to medium
Distribution Potential:Low to medium
Damage Potential:Medium
Static file:Yes
File size:72.704 Bytes
MD5 checksum:fc5117b02af5c2471da0b91516edffda
IVDF version: - Wednesday, July 7, 2010

 General Method of propagation:

   •  Kaspersky: Backdoor.Win32.IRCBot.poz
   •  TrendMicro: WORM_PUSHBOT.HJ
   •  F-Secure: Backdoor.Win32.IRCBot.poz
   •  Bitdefender: Win32.Worm.Palevo.AV
   •  Eset: IRC/SdBot
     DrWeb: Win32.HLLW.Oscar.11

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

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

 Files It copies itself to the following locations:
   • %WINDIR%\jusched.exe
   • %WINDIR%\jusched.exi

It deletes the initially executed copy of itself.

The following file is created:

C:\stas.exe Furthermore it gets executed after it was fully created.

It tries to download a file:

The location is the following:
Furthermore this file gets executed after it was fully downloaded.

It tries to executes the following files:

   • net stop MsMpSvc

   • net1 stop MsMpSvc

   • net stop wuauserv

   • net1 stop wuauserv

   • sc config wuauserv start= disabled

   • netsh firewall add allowedprogram 1.exe 1 ENABLE

   • "%WINDIR%\jusched.exe"

   • explorer.exe

   • "C:\stas.exe"

 Registry The following registry keys are added in order to run the processes after reboot:

   • "Java developer Script Browse"="%WINDIR%\jusched.exe"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Terminal Server\
   • "Java developer Script Browse"="%WINDIR%\jusched.exe"

   • "Java developer Script Browse"="%WINDIR%\jusched.exe"

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

   • "%executed file%"="%WINDIR%\jusched.exe:*:Enabled:Java
      developer Script Browse"

 Messenger It is spreading via Messenger. The characteristics are described below:

 Yahoo Messenger

The URL then refers to a copy of the described malware. If the user downloads and executes this file the infection process will start again.

 IRC To deliver system information and to provide remote control it connects to the following IRC Server:

Server: 66.225.**********
Port: 2345
Nickname: NEW-[USA|00|P|%number%]

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

설명 삽입자 Serban Ghiuta   2010년 8월 12일 목요일
설명 업데이트 Serban Ghiuta   2010년 8월 12일 목요일

뒤로 . . . .
https:// 이 창은 보안을 위해 암호화되었습니다.