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Virus:Worm/Poebot.C.173
Date discovered:26/06/2006
Type:Worm
In the wild:Yes
Reported Infections:Low
Distribution Potential:Medium
Damage Potential:Medium
Static file:Yes
File size:87.552 Bytes
MD5 checksum:23273e3a6db3f1f22506fc4f7383f359
VDF version:6.35.01.07 - Wednesday, July 26, 2006
IVDF version:6.35.01.07 - Wednesday, July 26, 2006

 General Methods of propagation:
   • Local network
   • Mapped network drives


Aliases:
   •  Kaspersky: Backdoor.Win32.PoeBot.c
   •  Sophos: Troj/PoeBot-HO
   •  VirusBuster: Worm.PoeBot.AD
   •  Eset: Win32/Poebot
   •  Bitdefender: Backdoor.PoeBot.C


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


Side effects:
   • Registry modification
   • Makes use of software vulnerability
   • Third party control

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



It deletes the initially executed copy of itself.

 Registry The following registry key is added in order to run the process after reboot:

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
   • "Client Server Runtime Process"="%SYSDIR%\csrs.exe"

 Network Infection In order to ensure its propagation the malware attemps to connect to other machines as described below.

It drops copies of itself to the following network shares:
   • IPC$
   • C$\Documents and Settings\All Users\Documents\
   • C$\shared
   • C$\windows\system32
   • C$\windows
   • e$\shared
   • d$\shared
   • c$\winnt
   • c$\winnt\system32
   • ADMIN$\system32\
   • ADMIN$
   • print$


It uses the following login information in order to gain access to the remote machine:

The following list of usernames:
   • staff; teacher; owner; student; intranet; lan; main; office; control;
      siemens; compaq; dell; cisco; ibm; oracle; sql; data; access;
      database; domain; god; backup; technical; mary; katie; kate; george;
      eric; none; guest; chris; ian; neil; lee; brian; susan; sue; sam;
      luke; peter; john; mike; bill; fred; joe; jen; bob; wwwadmin; oemuser;
      user; homeuser; home; internet; www; web; root; server; linux; unix;
      computer; adm; admin; admins; administrat; administrateur;
      administrador; administrator

The following list of passwords:
   • winpass; blank; nokia; orainstall; sqlpassoainstall; db1234; db2; db1;
      databasepassword; databasepass; dbpassword; dbpass; domainpassword;
      domainpass; hello; hell; love; money; slut; bitch; fuck; exchange;
      loginpass; login; qwe; zxc; asd; qaz; win2000; winnt; winxp; win2k;
      win98; windows; oeminstall; oem; accounting; accounts; letmein; sex;
      outlook; mail; qwerty; temp123; temp; null; default; changeme; demo;
      test; 2005; 2004; 2001; secret; payday; deadline; work; 1234567890;
      123456789; 12345678; 1234567; 123456; 12345; 1234; 123; 007; pwd;
      pass; pass1234; dba; passwd; password; password1



Exploit:
It makes use of the following Exploits:
– MS03-026 (Buffer Overrun in RPC Interface)
– MS03-049 (Buffer Overrun in the Workstation Service)
– MS04-011 (LSASS Vulnerability)
– MS05-039 (Vulnerability in Plug and Play)


IP address generation:
It creates random IP addresses while it keeps the first two octets from its own address. Afterwards it tries to establish a connection with the created addresses.


Remote execution:
It attempts to schedule a remote execution of the malware, on the newly infected machine. Therefore it uses the NetScheduleJobAdd function.

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

Server: 140.116.**********
Port: 9889
Server password: PING
Channel: #xo
Nickname: %eight-digit random character string%



 This malware has the ability to collect and send information such as:
    • CPU speed
    • Current user
     Details about drivers
    • Free disk space
    • Free memory
    • Information about the network
    • Platform ID
    • Information about running processes
    • Size of memory
    • Username
    • Information about the Windows operating system


 Furthermore it has the ability to perform actions such as:
    • Disable network shares
    • Download file
    • Enable network shares
     Perform network scan
     Updates itself
    • Upload file

 Stealing It tries to steal the following information:
 Passwords typed into 'password input fields'
 Recorded passwords used by the AutoComplete function

Passwords from the following programs:
   • FlashFXP
   • MSN
   • OutlookExpress
   • World Of Warcraft
   • Unreal3
   • Conquer Online

 Miscellaneous Mutex:
It creates the following Mutex:
   • 9ec754a20fe66d46a39824016be8058a92b8

 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 Irina Boldea on Thursday, November 23, 2006
Description updated by Irina Boldea on Thursday, November 23, 2006

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