Backdoor.MSIL.Crysan.nsn

BackdoorMSIL
Detection added: 12.11.2026 17:15:19 (GMT+2)
MD5: 4A654205DDDA5187EA3BF4B03074E4D2
SHA1: 172A7BFB9EEDB8B7C18EA7186309F013944CAA75

Behavior: Backdoor Trojan

Backdoor Trojans provide the author or hacker with remote administration of victim machines. Backdoors can be instructed to send, receive, execute and delete files, harvest confidential data from the computer, log activity on the computer and more.

Platform: MSIL

MSIL (.NET Common Intermediate Language).

Systems affected: Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP, Windows Vista, Windows 7 (x86/x64), Windows 8 (x86/x64), Windows 10 (x86/x64), Windows 11 (x86/x64)

NOTE: The hash is only listed for the first detected malicious file. SHA/MD5 hash is not intended as a security/antivirus solution; it provides additional information that allows you to identify known malware files.

How to prevent infection

  • Use up-to-date antivirus software.
  • Install the latest updates for your operating system and installed software.
  • Use strong passwords and password management software.
  • Use caution when opening attachments, accepting file transfers and clicking on links to web pages.

Learn more