Virus:Worm/Agobot.LY
Date discovered:17/06/2004
Type:Worm
In the wild:No
Reported Infections:Low
Distribution Potential:Medium
Damage Potential:Medium
Static file:Yes
File size:256.512 Bytes
MD5 checksum:58bba52d4d709402f80F9fa523e667d6
VDF version:6.25.00.100

 General Method of propagation:
   • Local network


Alias:
   •  Eset: Win32/Agobot


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


Side effects:
   • Blocks access to security websites
   • Registry modification
   • Makes use of software vulnerability
   • Steals information
   • Third party control

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



It deletes the initially executed copy of itself.

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

– HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
   • "microsoft update process"="svrhost.exe"

– HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
   • "microsoft update process"="svrhost.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$
   • IPC$
   • C$
   • D$
   • E$
   • ADMIN$
   • ADMIN$
   • print$
It makes use of the following Exploits:
– MS01-059 (Unchecked Buffer in Universal Plug and Play)
– MS03-007 (Unchecked Buffer in Windows Component)
– MS03-026 (Buffer Overrun in RPC Interface)
– MS03-039 (Buffer Overrun in RPCSS Service)
– MS05-039 (Vulnerability in Plug and Play)


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: firm.no-ip.org
Port: 6667
Channel: #deltawarez
Nickname: %random character string%
Password: mznxbcv



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


– Furthermore it has the ability to perform actions such as:
    • connect to IRC server
    • Launch DDoS SYN flood
    • Launch DDoS TCP flood
    • Launch DDoS UDP flood
    • disconnect from IRC server
    • Download file
    • Execute file
    • Join IRC channel
    • Kill process
    • Leave IRC channel
    • Perform network scan
    • Perform port redirection
    • Updates itself
    • Visit a website

 Hosts The host file is modified as explained:

– In this case already existing entries remain unmodified.

– Access to the following domains is effectively blocked:
   • www.symantec.com; securityresponse.symantec.com; symantec.com;
      www.sophos.com; sophos.com; www.mcafee.com; mcafee.com;
      liveupdate.symantecliveupdate.com; www.viruslist.com; viruslist.com;
      viruslist.com; f-secure.com; www.f-secure.com; kaspersky.com;
      www.avp.com; www.kaspersky.com; avp.com; www.networkassociates.com;
      networkassociates.com; www.ca.com; ca.com; mast.mcafee.com;
      my-etrust.com; www.my-etrust.com; download.mcafee.com;
      dispatch.mcafee.com; secure.nai.com; nai.com; www.nai.com;
      update.symantec.com; updates.symantec.com; us.mcafee.com;
      liveupdate.symantec.com; customer.symantec.com; rads.mcafee.com;
      trendmicro.com; www.trendmicro.com




The modified host file will look like this:


 Backdoor The following ports are opened:

– %SYSDIR%\svrhost.exe on TCP port 5840 in order to provide backdoor capabilities.
– %SYSDIR%\svrhost.exe on TCP port 10422 in order to provide backdoor capabilities.

 Stealing It tries to steal the following information:

– The following CD keys:
   • 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); 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; 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: Underground; Neverwinter Nights; NHL
      2003; NHL 2002; 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

– Passwords from the following programs:
   • Emails Addresses stored in WAB(Windows Address Book)
   • AOL Messenger passwords
   • Windows Messenger passwords

– It uses a network sniffer that checks for the following strings:
   • :.login
   • :!login
   • :.hashin
   • :!hashin
   • :.secure
   • :!secure
   • :!ident
   • :.ident

– A logging routine is started after a website is visited:
   • paypal.com

– It captures:
    • Login information

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


 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:
   • UPX

Description inserted by Teodor Onisor on Friday, November 3, 2006
Description updated by Teodor Onisor on Friday, November 3, 2006

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