RedLine Stealer
Also known as: RedLine, RedLine infostealer
RedLine Stealer is an information-stealing malware (infostealer) sold as malware-as-a-service that harvests saved browser credentials, cookies, autofill data, cryptocurrency wallets, and system information from infected Windows machines, then exfiltrates it to threat actors.
What is RedLine Stealer?
RedLine Stealer is one of the most widely distributed infostealer malware families in the world. First observed around 2020, it is sold on underground forums and Telegram channels under a malware-as-a-service (MaaS) model, meaning low-skill criminals can rent it for a monthly fee or buy a lifetime licence.
Once executed on a victim machine, RedLine systematically collects sensitive data from browsers and applications and packages it into a "stealer log" that is uploaded to a command-and-control (C2) server or directly into a Telegram channel controlled by the operator.
What data does RedLine steal?
RedLine targets a broad set of artifacts: saved usernames and passwords from Chromium- and Gecko-based browsers, session cookies (which can be replayed to bypass multi-factor authentication), autofill and credit-card data, cryptocurrency wallet files and browser extensions, FTP and VPN client credentials, and basic system fingerprinting such as the operating system, hardware ID, installed antivirus, and a screenshot of the desktop.
The stolen cookies are particularly dangerous: a valid session cookie lets an attacker resume an authenticated session without ever needing the password or a second factor.
How does RedLine spread?
RedLine is most commonly delivered through cracked software, fake installers, malicious advertising (malvertising), phishing attachments, and YouTube videos advertising "free" tools or game cheats. Because it is operated by many independent affiliates, distribution methods vary widely from campaign to campaign.
Why RedLine matters
A single RedLine infection can expose dozens of corporate and personal credentials at once. Because the resulting stealer logs are resold across multiple marketplaces, the same compromised credentials often circulate for months — fueling account takeover, ransomware intrusions, and business email compromise long after the original infection.
VantaPrism continuously ingests RedLine stealer logs as they are posted to monitored Telegram channels, parses the credentials, cookies, and victim metadata, and lets security teams search whether their domains, employees, or customers appear in RedLine-sourced data — often within minutes of a log being shared.
Check Your Exposure arrow_forwardFrequently Asked Questions
Is RedLine Stealer still active?
Can RedLine bypass two-factor authentication?
How do I know if I was infected by RedLine?
Related Terms
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