Win32/Laziok [Threat Name] go to Threat

Win32/Laziok.A [Threat Variant Name]

Category trojan
Size 116224 B
Aliases Trojan.Win32.Fsysna.bhij (Kaspersky)
  Trojan:Win32/Dynamer!ac (Microsoft)
Short description

The trojan serves as a backdoor. It can be controlled remotely. The file is run-time compressed using Agile.NET, UPX .


When executed, the trojan copies itself in some of the the following locations:

  • %windir%\­explorer\­smss.exe
  • %appdata%\­System\­Oracle\­smss.exe

In order to be executed on every system start, the trojan sets the following Registry entries:

  • [HKEY_LOCAL_MACHINE\­Software\­Microsoft\­Windows\­CurrentVersion\­Run]
    • "Windows" = "%windir%\­explorer\­smss.exe"
  • [HKEY_CURRENT_USER\­Software\­Microsoft\­Windows\­CurrentVersion\­Run]
    • "Windows" = "%appdata%\­System\­Oracle\­smss.exe"

The trojan creates the following file:

  • %appdata%\­System\­Oracle\­azioklmpx\­hzid\­hzid.txt

The trojan quits immediately if it detects a window containing one of the following strings in its title:

  • wireshark
  • Fiddler

The trojan quits immediately if any of the following folders/files is detected:

  • C:\­Program Files\­VMware\­VMware Tools\­
  • C:\­Program Files (x86)\­VMware\­VMware Tools\­
  • C:\­Windows\­system32\­VBoxTray.exe\­
Information stealing

The trojan collects the following information:

  • operating system version
  • malware version
  • installed antivirus software
  • amount of operating memory
  • CPU information
  • video controller type
  • computer name
  • computer IP address
  • country

The trojan attempts to send gathered information to a remote machine.

Other information

The trojan acquires data and commands from a remote computer or the Internet.

The trojan contains a list of (2) URLs. The HTTP protocol is used in the communication.

It can execute the following operations:

  • download files from a remote computer and/or the Internet
  • run executable files
  • terminate running processes
  • send gathered information
  • update itself to a newer version

The trojan may alter the contents of the clipboard.

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