Attention: We have transitioned to a new AAD or Microsoft Entra ID from the week of May 20, 2024. In case your tenant requires admin consent, please refer to this document located at Overview of user and admin consent - Microsoft Entra ID | Microsoft Learn and grant access to App ID: 6ba09155-cb24-475b-b24f-b4e28fc74365 with graph permissions for Directory.Read.All and User.Read for continued access. While the app may appear unverified, you can confirm its legitimacy by verifying the App ID provided.

We're gradually updating threat actor names in our reports to align with the new weather-themed taxonomy. Learn about Microsoft threat actor names

Published Feb 10, 2010 | Updated Sep 15, 2017

Learn about other threats

Trojan:Win32/C2Lop.gen!M

Detected by Microsoft Defender Antivirus

Aliases: Trojan.Win32.Swizzor.c (Kaspersky) W32/Swizzor.GYGI (Norman) W32/Swizzor.GPHN (Norman) Trojan.Swizzor.Gen!Pac.6 (VirusBuster) Downloader.Swizzor (AVG) TR/Swizzor.C.4703 (Avira) TR/Swizzor.293376 (Avira) Trojan.Swizzor.based (Dr.Web) Win32/TrojanDownloader.Swizzor.NEJ (ESET) Trojan.Win32.Swizzor (Ikarus) Swizzor!ek (McAfee) Swizzor!ec (McAfee) Mal/Swizzor-K (Sophos) C2.Lop (Sunbelt Software) Trojan.Win32.Swizzor.c (Sunbelt Software) Adware.Lop (Symantec) TROJ_SWIZZOR.KIE (Trend Micro) TROJ_SWIZZOR.KYN (Trend Micro)

Summary

Trojan:Win32/C2Lop.gen!M is a generic detection for a member of the Trojan:Win32/C2Lop family of trojans. This family modifies Web browser settings, adds browser bookmarks, and delivers pop-up advertisements.

Manual removal is not recommended for this threat. Use Microsoft Security Essentials or another up-to-date scanning and removal tool to detect and remove this threat and other unwanted software from your computer. For more information on Microsoft security products, see http://www.microsoft.com/protect/products/computer/default.mspx.

Trojan:Win32/C2Lop.gen!M

Summary

What to do now

Technical information

Threat behavior

Installation

Payload

Prevention

Symptoms