Worm/Sdbot.49134 - Worm

See also

Summary

Full description

Statistics

Virus:	Worm/Sdbot.49134
Date discovered:	02/11/2006
Type:	Worm
In the wild:	No
Reported Infections:	Low
Distribution Potential:	Medium to high
Damage Potential:	Medium
Static file:	Yes
File size:	49.134 Bytes
MD5 checksum:	30083348f730d111702cfb1babb2d802
VDF version:	6.36.00.150
IVDF version:	6.36.00.167 - Wed, 25 Oct 2006 16:56 (GMT+1)

General Methods of propagation:
   • Local network
   • Messenger

Aliases:
   • Kaspersky: Backdoor.Win32.SdBot.ayv
   • Grisoft: IRC/BackDoor.SdBot2.KKO
   • Eset: IRC/SdBot
   • Bitdefender: Backdoor.SDBot.97DDBEF4

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

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

Files It copies itself to the following location:
• %WINDIR%\syswinxp.exe

It deletes the initially executed copy of itself.

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

– [HKLM\SYSTEM\CurrentControlSet\Services\Microsoft Windows System32\
   Security]
   • "Security"=%hex values%

– [HKLM\SYSTEM\CurrentControlSet\Services\wscsvc]
   • "Start"=dword:00000004

– [HKLM\SYSTEM\CurrentControlSet\Services\Microsoft Windows System32]
   • "Type"=dword:00000110
     "Start"=dword:00000002
     "ErrorControl"=dword:00000000
     "ImagePath"="%WINDIR%\syswinxp.exe"
     "DisplayName"="Microsoft Windows System32"
     "ObjectName"="LocalSystem"
     "FailureActions"=%hex values%
     "Description"="Microsoft Windows System32"

– [HKLM\SYSTEM\CurrentControlSet\Services\Microsoft Windows System32\
   Enum]
   • "0"="Root\\LEGACY_MICROSOFT_WINDOWS_SYSTEM32\\0000"
     "Count"=dword:00000001
     "NextInstance"=dword:00000001

The values of the following registry keys are removed:

– [HKCU\Software\Microsoft\windows\CurrentVersion\Internet Settings]
   • "ProxyServer"
   • "ProxyOverride"
   • "AutoConfigURL"

– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Shell Extensions]
   • "Melt"

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

– [HKLM\SOFTWARE\Microsoft\Security Center]
   • "UpdatesDisableNotify"=dword:00000001
   • "AntiVirusDisableNotify"=dword:00000001
   • "FirewallDisableNotify"=dword:00000001
   • "AntiVirusOverride"=dword:00000001
   • "FirewallOverride"=dword:00000001

– [HKLM\SOFTWARE\Policies\Microsoft\WindowsFirewall\DomainProfile]
   • "EnableFirewall"=dword:00000000

– [HKLM\SOFTWARE\Policies\Microsoft\WindowsFirewall\StandardProfile]
   • "EnableFirewall"=dword:00000000

The following registry keys are added:

– [HKLM\SYSTEM\CurrentControlSet\Enum\Root\
   LEGACY_MICROSOFT_WINDOWS_SYSTEM32]
   • "NextInstance"=dword:00000001

– [HKLM\SYSTEM\CurrentControlSet\Enum\Root\
   LEGACY_MICROSOFT_WINDOWS_SYSTEM32\0000]
   • "Service"="Microsoft Windows System32"
   • "Legacy"=dword:00000001
   • "ConfigFlags"=dword:00000000
   • "Class"="LegacyDriver"
   • "ClassGUID"="{8ECC055D-047F-11D1-A537-0000F8753ED1}"
   • "DeviceDesc"="Microsoft Windows System32"

– [HKLM\SYSTEM\CurrentControlSet\Enum\Root\
   LEGACY_MICROSOFT_WINDOWS_SYSTEM32\0000\Control]
   • "*NewlyCreated*"=dword:00000000
   • "ActiveService"="Microsoft Windows System32"

– [HKLM\SYSTEM\CurrentControlSet\Services\lanmanserver\parameters]
   • "AutoShareWks"=dword:00000000
   • "AutoShareServer"=dword:00000000

– [HKLM\SYSTEM\CurrentControlSet\Services\lanmanworkstation\
   parameters]
   • "AutoShareWks"=dword:00000000
   • "AutoShareServer"=dword:00000000

– [HKLM\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate]
   • "DoNotAllowXPSP2"=dword:00000001

The following registry keys are changed:

– [HKLM\SYSTEM\CurrentControlSet\Control]
   New value:
   • "WaitToKillServiceTimeout"="7000"

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

– [HKLM\SYSTEM\CurrentControlSet\Control\ServiceCurrent]
   New value:
   • @=dword:0000000d

– [HKLM\SYSTEM\CurrentControlSet\Services\TlntSvr]
   New value:
   • "Start"=dword:00000004

– [HKLM\SYSTEM\CurrentControlSet\Services\RemoteRegistry]
   New value:
   • "Start"=dword:00000004

– [HKLM\SYSTEM\CurrentControlSet\Services\Messenger]
   New value:
   • "Start"=dword:00000004

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

– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\
   Auto Update]
   New value:
   • "AUOptions"=dword:00000001
     "AUState"=dword:00000007

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

– AIM Messenger
– ICQ Messenger
– MSN Messenger
– Yahoo Messenger

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$
   • d$\windows\system32
   • C$\windows\system32
   • c$\winnt\system32
   • ADMIN$\system32\
   • 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:
   • wmd; winxp; winpass; winnt; windoze; windowsME; windows98; windows2k;
      windows; win98; win2k; win2000; whore; whisky; whiskey; wh0re; west;
      web; washington; userpassword; user2; user123; user12; user1; unix;
      turnip; texas; test2; test12; test1; tennessee; temp2; temp123;
      temp12; temp1; technical; system; switch; susan; sue; student1;
      sqlpass; spencer; souris; slut; siemens; share; server2; server123;
      server12; server1; satan2; satan123; satan12; satan1; sam; sage;
      rooted; ron; reseau; r00t; qwerty2; qwerty123; qwerty12; qwerty1; qwe;
      quidditch; qaz; pwned; private2; private123; private12; private1;
      potter; poiut; pink; peter; password2; password12; password1; pass2;
      pass1234; pass123; pass12; pass1; owned; own; owa; outlook;
      ordinateur; orange; orainstall; opteron; oil; office; oemuser;
      oeminstall; oem; oainstall; null; nopass; noob; nokia; newfy; newfie;
      neil; money; mouse; moonshine; mince; mike; merde; mass; mary;
      manager2; manager123; manager12; manager1; main; mail; madre; luke;
      lol; loginpass; linux; lee; lan; katie; kate; john; joe; joan; jesus2;
      jesus123; jesus12; jesus1; jen; jackdaniels; iraq; intranet; internet;
      imprimeur; idiot; ibm; ian; homeuser; hogwarts; hermione; hermine;
      hello; hell; heaven; headoffice; hax; harry; hagrid; gryffindor; god2;
      god123; god12; god1; glen; george; gay; gast; fucked; fuck; freddy;
      fred; freak; frank; fool; fish; feds; fanny; exchnge; exchange; eric;
      ecran; dumbledore; dude; drugs; dope; domainpassword; domainpass;
      domain; devil; demo; dementor; dell; dbpassword; dbpass; db1234; db1;
      databasepassword; databasepass; data; rom; ctx; crash; copine; copin;
      control; compaq; cisco; chris; cederom; cauldron; carte; capitol;
      buckbeak; bruce; brian; bong; bob; blank; bitch; bill; biere; beer;
      barbara; backdoor; azkaban; azerty; athlon; askaban; asd; amie; ami;
      afro; administrator2; administrator123; administrator12;
      administrator1; admin2; admin12; admin1; adm; accounts; accounting;
      access; WindowsXP; West; Washington; Verwalter; UNIX; Texas;
      Tennessee; TEST; TEMP; Server; SYSTEM; SERVER; Root; ROOT; PHP;
      PASSWD; Ospite; LOCAL; GUEST; GAST; Coordinatore; CNN; Box; BOX;
      BACKUP; Administrator; Administrateur; Administrador; ASP;
      ADMINISTRATOR; ADMINISTRATEUR; ADMINISTRADOR; ADMIN; ACCESS; 666;
      2525; 2001; 2000; 1999; 1998; 1997; 1996; 1778; 1776; 123467890;
      12346789; 1234678; 123467; 12346; 1234567890; 121; bl00py; none;
      noweakpass; zxcvbnm; zxcv; yxcv; xyz; xxyyzz; xxx; work; win; werty;
      vagina; user; test123; security; test; temp; sybase; supersecret;
      superman; super; sql; sex; server; secrets; secret; school; satan;
      renegade; red123; qwertyuiop; qwerty; qwer; pwd; pussy; public;
      private; porn; poiuytrewq; penis; patrick; pat; password123; passwd;
      pass; mypc; mypass; mybox; mybaby; metal; manager; love; login;
      letmein; leet; kids; jesus; ihavenopass; homework; home; godblessyou;
      god; foobar; enable; changeme; box; baby; asdfghjkl; asdfgh; asdf;
      alpha; admin123; abcd; abc123; abc; aaa; User; Unknown; Test;
      Standard; Password; Owner; OEM; Login; Inviter; Internet; Guest; Gast;
      Dell; Default; CHT; CHECK; Admin; 88888888; 888888; 654321; 54321;
      5201314; 2600; 2004; 2003; 2002; 123qwe; 123asd; 123abc; 1234qwer;
      123456789; 12345678; 1234567; 123456; 1234; 123123; 121212; 11111111;
      111111; 111; 110; 007; 00000000; 000000; 12345; 11111; 123; password;
      backup; db2; oracle; dba; database; default; guest; wwwadmin; teacher;
      student; owner; computer; root; staff; admin; admins; administrat;
      administrateur; administrador; administrator

Exploit:
It makes use of the following Exploits:
– MS03-026 (Buffer Overrun in RPC Interface)
– MS03-039 (Buffer Overrun in RPCSS Service)
– MS03-049 (Buffer Overrun in the Workstation Service)
– MS04-007 (ASN.1 Vulnerability)
– 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.

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

Slow down:
– You might also note a slight slow down due to the multiple network threads created.

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: infer.battoun2ouja3.**********
Port: 6667
Server password: terror
Channel: #scorpion
Nickname: [P00|USA|%random character string%]
Password: r00ted

– This malware has the ability to collect and send information such as:
    • Current user
    • Information about the Windows operating system

– Furthermore it has the ability to perform actions such as:
    • connect to IRC server
    • Launch DDoS SYN flood
    • Disable network shares
    • disconnect from IRC server
    • Download file
    • Edit registry
    • Enable network shares
    • Execute file
    • Join IRC channel
    • Kill process
    • Leave IRC channel
    • Perform DDoS attack
    • Perform network scan
    • Register a service
    • Send emails
    • Start spreading routine
    • Terminate process
    • Updates itself
    • Visit a website

Miscellaneous Mutex:
It creates the following Mutex:
• TI%random character string%

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:
• PE Pack

See a brief description here.

Description inserted by Monica Ghitun on Thu, 02 Nov 2006 10:33 (GMT+1)
Description updated by Monica Ghitun on Tue, 21 Nov 2006 17:23 (GMT+1)

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