New Statc Stealer Malware Emerges: Your Sensitive Data at Risk

Cyber Security Threat Summary:
Researchers at Zscaler recently disclosed details of a new information-stealing malware dubbed Statc Stealer that has been observed infecting Windows devices. Written in the C++ programming language, Statc Stealer is capable of performing filename discrepancy checks to prevent sandbox detection and reverse engineering analysis by security professionals. Like any info stealer, Statc stealer comes with a wide range of stealing capabilities, allowing it to exfiltrate data from various browsers including Chrome, Microsoft Edge, Brave, Opera, Yandex, Mozilla Firefox, etc. Data targeted by the stealer includes browser cookies as well as autofill data such as usernames and passwords, emails, credit card details, and much more. The info stealer is also capable of targeting crypto wallets as well as data from messaging apps like Telegram.

Security Officer Comments:
In the latest campaign, the infection starts off with a user being tricked into clicking on a malicious link on their browser, typically an advertisement, where the stealer imitates an MP4 file format. In turn, this leads to the download and execution of a PDF installer as well as a downloader binary file that is designed to download the Statc payload through a Powershell script. Once deployed, Statc Stealer will steal the data on the victim’s device, encrypt it, and store the data in the Temp folder, which is later sent to an actor-controlled command and control server.

Suggested Correction(s):
Users should always be cautious of individuals or organizations that ask for personal information. Most companies will not ask for sensitive data from its customers. If in doubt, users should verify with the company itself to avoid any potential issues.

Users should always take a close look at the sender’s display name when checking the legitimacy of an email. Most companies use a single domain for their URLs and emails, so a message that originates from a different domain is a red flag.

As a general rule, users should not click links or download files even if they come from seemingly “trustworthy” sources.

Check for mismatched URLs. While an embedded URL might seem perfectly valid, hovering above it might show a different web address. In fact, users should avoid clicking links in emails unless they are certain that it is a legitimate link.

Users should always be on the lookout for any grammatical errors and spelling mistakes. Legitimate companies will often employ proofreaders and editors who ensure that the materials they send out are error-free.

Users should not be frightened or intimidated by messages that have an alarmist tone. They should double check with the company if they are uncertain about the status of their accounts.

Phishing emails are designed to be sent to a large number of people, so they need to be as impersonal as possible. Users should check whether the message contains a generic subject and greeting, as this can be a sign of a phishing attempt.

Although not every end user has access to advanced anti-phishing software, they can still use the built-in protection of their email clients to filter messages. One example is setting the email client to block all images unless approved.

Legitimate companies will never send confirmation emails unless there are specific reasons for doing so. In fact, most companies will avoid sending unsolicited messages unless it’s for company updates, newsletters, or advertising purposes.

Users should always take the context of an email or message into account. For example, most online accounts do away with viewable member numbers, so users should be wary if they receive emails containing a “member number” for services that generally don’t use them.

It is important to take note of unusual information in the text of the message. Any mentions of operating systems and software that are not typically used by consumers can often be indicators of a phishing attempt.

If it seems suspicious, it probably is. Users should always err on the side of caution when it comes to sending out personally identifiable information through messages and emails.