Virus:Worm/Rbot.1234944
Date discovered:12/10/2006
Type:Worm
In the wild:No
Reported Infections:Low
Distribution Potential:Medium
Damage Potential:Medium
Static file:Yes
File size:1.233.920 Bytes
MD5 checksum:096db3c90724d8d8f14ddf768b87df82
VDF version:6.35.01.99
IVDF version:6.35.01.100 - Wednesday, August 16, 2006

 General Method of propagation:
   • Local network


Aliases:
   •  Kaspersky: Backdoor.Win32.Rbot.bgj
   •  TrendMicro: WORM_RBOT.APV
   •  Eset: Win32/Rbot
   •  Bitdefender: Backdoor.Rbot.BGJ


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


Side effects:
   • Drops files
   • Registry modification
   • Makes use of software vulnerability
   • Steals information
   • Third party control

 Files It copies itself to the following location:
   • %SYSDIR%\%nine-digit random character string%.exe



It deletes the initially executed copy of itself.



The following file is created:

– %SYSDIR%\drivers\oreans32.sys

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

– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices]
   • "MSI Systems Tool"="%nine-digit random character string%"



The following registry key is continuously in an infinite loop added in order to run the process after reboot.

–  [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   • "MSI Systems Tool"="%nine-digit random character string%"



The following registry keys are added in order to load the service after reboot:

– [HKLM\SYSTEM\CurrentControlSet\Services\oreans32\Security]
   • "Security"=%hex values%

– [HKLM\SYSTEM\CurrentControlSet\Services\oreans32]
   • "Type"=dword:00000001
     "Start"=dword:00000001
     "ErrorControl"=dword:00000001
     "ImagePath"="\??\%SYSDIR%\drivers\oreans32.sys"
     "DisplayName"="oreans32"

– [HKLM\SYSTEM\CurrentControlSet\Services\oreans32\Enum]
   • "0"="Root\\LEGACY_OREANS32\\0000"
     "Count"=dword:00000001
     "NextInstance"=dword:00000001



The following registry keys are added:

– [HKCU\Software\Microsoft\OLE]
   • "MSI Systems Tool"="%nine-digit random character string%"

– [HKLM\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_OREANS32]
   • "NextInstance"=dword:00000001

– [HKLM\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_OREANS32\0000]
   • "Service"="oreans32"
   • "Legacy"=dword:00000001
   • "ConfigFlags"=dword:00000000
   • "Class"="LegacyDriver"
   • "ClassGUID"="{8ECC055D-047F-11D1-A537-0000F8753ED1}"
   • "DeviceDesc"="oreans32"

– [HKLM\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_OREANS32\0000\
   Control]
   • "*NewlyCreated*"=dword:00000000
   • "ActiveService"="oreans32"



The following registry keys are changed:

– [HKLM\SOFTWARE\Microsoft\Ole]
   New value:
   • "EnableDCOM"="N"

– [HKLM\SYSTEM\ControlSet001\Control\Lsa]
   New value:
   • "restrictanonymous"=dword:00000001

 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$
   • D$
   • ADMIN$


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

–Cached usernames and passwords.

– A list of usernames and passwords:
   • intranet; lan; main; winpass; blank; office; control; nokia; siemens;
      compaq; dell; cisco; ibm; orainstall; sqlpassoainstall; sql; db1234;
      db1; databasepassword; data; databasepass; dbpassword; dbpass; access;
      domainpassword; domainpass; domain; hello; hell; god; sex; slut;
      bitch; fuck; exchange; backup; technical; loginpass; login; mary;
      katie; kate; george; eric; chris; ian; neil; lee; brian; susan; sue;
      sam; luke; peter; john; mike; bill; fred; joe; jen; bob; qwe; zxc;
      asd; qaz; win2000; winnt; winxp; win2k; win98; windows; oeminstall;
      oemuser; oem; user; homeuser; home; accounting; accounts; internet;
      www; web; outlook; mail; qwerty; null; server; system; changeme;
      linux; unix; demo; none; test; 2004; 2003; 2002; 2001; 2000;
      1234567890; 123456789; 12345678; 1234567; 123456; 12345; 1234; 123;
      007; pwd; pass; pass1234; passwd; password; password1; adm; db2;
      oracle; dba; database; default; guest; wwwadmin; teacher; student;
      owner; computer; root; staff; admin; admins; administrat;
      administrateur; administrador; administrator



Exploit:
– MS03-026 (Buffer Overrun in RPC Interface)
– MS03-039 (Buffer Overrun in RPCSS Service)
– MS04-007 (ASN.1 Vulnerability)
– MS04-011 (LSASS Vulnerability)


Infection process:
Creates an FTP script on the compromised machine in order to download the malware to the remote location.


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: Xvrx2.r00t3d.co.**********
Port: 6667
Channel: #vrx
Nickname: VrX-%nine-digit random character string%
Password: X



– This malware has the ability to collect and send information such as:
    • Cached passwords
    • Capture screen
    • Capture shot from webcam
    • CPU speed
    • Current user
    • Free disk space
    • Free memory
    • Malware uptime
    • Information about the network
    • Size of memory
    • Information about the Windows operating system


– Furthermore it has the ability to perform actions such as:
    • connect to IRC server
    • Launch DDoS ICMP flood
    • Launch DDoS SYN flood
    • Launch DDoS TCP flood
    • Launch DDoS UDP flood
    • Disable DCOM
    • Disable network shares
    • disconnect from IRC server
    • Download file
    • Enable DCOM
    • Enable network shares
    • Execute file
    • Join IRC channel
    • Kill process
    • Leave IRC channel
    • Open remote shell
    • Perform DDoS attack
    • Perform network scan
    • Perform port redirection
    • Restart system
    • Send emails
    • Start keylog
    • Updates itself
    • Upload file

 Backdoor The following port is opened:

– %executed file% on a random TCP port in order to provide an FTP server.

 Stealing It tries to steal the following information:
– Passwords typed into 'password input fields'

– The following CD key:
   • Microsoft Windows Product ID

– Passwords from the following programs:
   • Battlefield 1942
   • Battlefield 1942 (Road To Rome)
   • Battlefield 1942 (Secret Weapons of WWII)
   • Battlefield Vietnam
   • Black and White
   • Command & Conquer Generals
   • Command and Conquer: Generals (Zero Hour)
   • Command and Conquer: Red Alert 2
   • Command and Conquer: Tiberian Sun
   • Counter-Strike (Retail)
   • Chrome
   • FIFA 2002
   • FIFA 2003
   • Freedom Force
   • Global Operations
   • Gunman Chronicles
   • Half-Life
   • Hidden & Dangerous 2
   • IGI 2: Covert Strike
   • Industry Giant 2
   • James Bond 007: Nightfire
   • Legends of Might and Magic
   • Medal of Honor: Allied Assault
   • Medal of Honor: Allied Assault: Breakthrough
   • Medal of Honor: Allied Assault: Spearhead
   • Nascar Racing 2002
   • Nascar Racing 2003
   • Need For Speed Hot Pursuit 2
   • Need For Speed: Underground
   • Neverwinter Nights
   • Neverwinter Nights (Hordes of the Underdark)
   • Neverwinter Nights (Shadows of Undrentide)
   • NHL 2003
   • NHL 2002
   • NOX
   • Rainbow Six III RavenShield
   • Shogun: Total War: Warlord Edition
   • Soldier of Fortune II - Double Helix
   • Soldiers Of Anarchy
   • The Gladiators
   • Unreal Tournament 2003
   • Unreal Tournament 2004

– It uses a network sniffer that checks for the following strings:
   • :.login
   • :.l
   • :!l
   • :%l
   • :.syn
   • :!syn
   • :$syn
   • :%syn

– A logging routine is started after the following website is visited, which contains one of the following substrings in the URL:
   • paypal.com
   • paypal

– It captures:
    • Login information

 Miscellaneous Mutex:
It creates the following Mutex:
   • VrXGr8


Anti debugging
It checks if the following program is running:
   • SoftIce

If successful, it terminates immediately.

 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 Monica Ghitun on Thursday, October 12, 2006
Description updated by Monica Ghitun on Wednesday, November 22, 2006

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