Worm/RBot.81923 - Worm

See also

Summary

Full description

Statistics

Virus:	Worm/RBot.81923
Date discovered:	27/09/2005
Type:	Worm
In the wild:	No
Reported Infections:	Low
Distribution Potential:	Medium
Damage Potential:	Medium
Static file:	Yes
File size:	81.923 Bytes
MD5 checksum:	C010302B81952414ADD19BAF4EC576F3
VDF version:	6.32.0.46

General Method of propagation:
   • Local network

Alias:
   • TrendMicro: WORM_RBOT.CIA

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

Side effects:
   • Uses its own Email engine
   • Registry modification
   • Makes use of software vulnerability
   • Steals information
   • Third party control

Files It copies itself to the following location:
• %SYSDIR%\MrNo4236.exe

It deletes the initially executed copy of itself.

Registry The following registry keys are continuously in an infinite loop added in order to run the processes after reboot.

– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   • "Syga432te Pe432rsonal Firewall"="MrNo4236.exe"

– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices]
   • "Syga432te Pe432rsonal Firewall"="MrNo4236.exe"

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   • "Syga432te Pe432rsonal Firewall"="MrNo4236.exe"

The following registry keys are changed:

– [HKLM\SOFTWARE\Microsoft\Ole]
   Old value:
   • "EnableDCOM"=%user defined settings%
   New value:
   • "EnableDCOM"="N"

– [HKLM\SYSTEM\CurrentControlSet\Control\Lsa]
   Old value:
   • "restrictanonymous"=%user defined settings%
   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:
   • D:\
   • C:\
   • ADMIN$
   • IPC$

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

– The following list of usernames:
   • User
   • Administrator

– The following list of 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; staff; admins; administrat; administrateur;
      administrador; administrator

Exploit:
– MS03-026 (Buffer Overrun in RPC Interface)
– MS04-011 (LSASS Vulnerability)
– MS05-039 (Vulnerability in Plug and Play)

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

IRC Server: lovelychat.**********.biz
Port: 6667
Channel: #Rules#
Nickname: USA|%six-digit random character string%

– This malware has the ability to collect and send information such as:
    • Cached passwords
    • CPU speed
    • Current user
    • Free disk space
    • Free memory
    • Malware uptime
    • Information about the network
    • Information about running processes
    • Size of memory
    • System directory
    • Username
    • Windows directory

– Furthermore it has the ability to perform actions such as:
    • 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
    • Register a service
    • Send emails
    • Start keylog
    • Start spreading routine
    • Terminate process
    • Updates itself
    • Upload file
    • Visit a website

Stealing It tries to steal the following information:
– Windows Product ID

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

Miscellaneous Mutex:
It creates the following Mutex:
• MrNo

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 the following runtime packer:
• Petite

See a brief description here.

Description inserted by Andrei Gherman on Tue, 27 Sep 2005 14:44 (GMT+1)
Description updated by Andrei Gherman on Wed, 28 Sep 2005 08:19 (GMT+1)

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