Win32/Sabresac [Threat Name] go to Threat

Win32/Sabresac.A [Threat Variant Name]

Category trojan
Size 415232 B
Aliases Trojan.Win32.Scar.nxgq (Kaspersky)
  Trojan:Win32/Sabresac.A!bit (Microsoft)
  Trojan.DownLoader21.14098 (Dr.Web)
Short description

The trojan serves as a backdoor. It can be controlled remotely.


When executed, the trojan creates the following files:

  • %temp%\­~dl%variable1%.tmp (116068 B, Win32/Sabresac.A)
  • %temp%\­ist%variable2%.tmp\­oSaberSvc.exe (381440 B, Win32/Sabresac.A)

A string with variable content is used instead of %variable1-2% .

The trojan creates the following file:

  • %programfiles%\­Windows Exsystem\­winsystemw.exe (381440 B, Win32/Sabresac.A)

The trojan registers file as a system service.

This causes the trojan to be executed on every system start.

Information stealing

The trojan collects the following information:

  • operating system version
  • language settings
  • installed antivirus software
  • external IP address of the network device

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

The TCP protocol is used.

Other information

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

The trojan contains a list of (8) URLs. The TCP, 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
  • execute shell commands

The following Registry entries are set:

    • "Uid" = "%variable%"
    • "Install" = "%programfiles%\­Windows Exsystem\­"
    • "Type" = "White"
    • "Version" = "1.1.1"
    • "Sor" = "org"

A string with variable content is used instead of %variable% .

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