What is "Silver Fox" Virus

"Silver Fox" is a type of malware disseminated by attackers via chat tools like WeChat and DingTalk, phishing emails, and fraudulent websites. This malware masquerades as legitimate programs. Attackers lure victims into executing these disguised programs, which subsequently download remote control Trojans. These Trojans enable the attackers to take control of the victim's computer and conduct fraudulent activities.

Attack Characteristics

The "Silver Fox" Trojan spreads via three main methods: Instant Messaging (IM) transmission, phishing websites, and fake software. IM transmission uses platforms like QQ and WeChat to send phishing files or links with enticing content such as "transcript" and "transfer notification slip". Phishing websites, often posing as tax authorities or grade inquiry sites, use names like "invoice", "tax declaration", and "college entrance examination score". Fake software pretends to be popular programs like WeChat, WPS, and DingTalk, spreading through search engines and other channels.

This Trojan targets high-value victims like corporate executives and financial personnel, disguising itself as common files or software. Once inside, it controls social accounts, spreads Trojans, takes screenshots, records screens, monitors financial transfers and internal communications to defraud, often impersonating leaders for large transfers. The Silver Fox Trojan can also combine with ransomware, causing severe damage to corporate privacy data and business stability.

Prevention Tips:

1. Regularly update antivirus software and strengthen daily protection. Check computer security status consistently, install firewalls and antivirus software, keep the operating system and applications up to date with patches, update virus libraries, and enable all antivirus protection policies to prevent Trojan virus intrusion.
2. Do not click or forward suspicious links. For URLs, QR codes, executable programs, compressed packages, etc., sent through chat tools (such as WeChat, QQ, etc.), avoid clicking and forwarding them. And be highly alert to messages from strangers or WeChat/QQ groups.
3. Be cautious with emails. Avoid opening attachments or links from unknown senders to prevent viruses.
4. Download software from official websites to avoid malicious software.
5. Raise security awareness. Enhance awareness of personal information security, avoid trusting information from unknown sources, and remain cautious about unusual file names or links in chat software.