Malware Miscellany, December 2008

• Greediest Trojan targeting banks
  Trojan.Win32.Qhost.gn wins this category, by redirecting clients of 39 different banks to phishing sites.
• Greediest Trojan targeting payment systems and payment cards
  Just like last month, a single piece of malware comes out top in these two categories. This time, it’s Trojan.Win32.Agent.eii, which targets users of three payment systems and 4 payment cards simultaneously.
• Stealthiest malicious program
  Trojan-PSW.Win32.LdPinch.auv is packed with 10 different packers.
• Smallest malicious program
  Trojan.BAT.Shutdown.g is a mere 20 bytes, but it’s still able to reboot the infected computer in spite of its minute size.
• Largest malicious program
  Trojan-Banker.Win32.Banbra.bby is 27 MB in size.
• Most common malicious code which exploits a vulnerability
  In December, exploits for an SWF vulnerability made up 12% of all malicious content.
• Most common malicious code on the Internet
  Trojan-Downloader.HTML.IFrame.wf accounted for nearly 8% of all malicious traffic this month.
• Most common Trojan family
  1499 previously unknown modifications make Backdoor.Win32.Hupigon the winner of this category in December.
• Most common virus/ worm family
  Worm.Win32.AutoRun came up with 312 new modifications this month, putting it at the top of this class.

Kaspersky researchers have discovered new Mirage Kitten attacks using previously undocumented malware families: NodeRabbit in Node.js and PollCat in JavaScript.

Our experts discovered a new CoolClient backdoor variant with a kernel-mode rootkit driver that hides malicious processes, files, and network connections from security tools and threat analysts.

Kaspersky experts break down a new Armored Likho campaign that poses as a fundraising efforts and delivers a new Still Toolkit aimed at stealing Telegram data and eavesdropping on victims.

Kaspersky researchers reveal previously undocumented malware attributed to Mirage Kitten (UNC1549, Smoke Sandstorm, Nimbus Manticore): NightLedger backdoor, ArcBridge, and BridgeHead tunneling tools.