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BackWhat is Info Stealer?
An info stealer is a type of malware designed to extract sensitive data such as credentials, browser data, and system information from compromised endpoints. Info stealer infections operate silently, collect stored data, and transfer it to attackers, making them difficult to detect without endpoint-level monitoring.
Why are info stealers a major security risk?
These threats target high-value data that enables further compromise.
- Extract saved browser credentials and session cookies
- Capture autofill data, tokens, and system details
- Operate without disrupting normal device usage
- Enable account takeover and lateral movement
Without visibility, an info stealer can remain active and continuously leak sensitive data.
What data do these threats typically collect?
| Data Type | Impact on Security |
|---|---|
| Browser credentials | Unauthorized access to accounts |
| Session cookies | Bypass multi-factor authentication |
| Autofill data | Exposure of personal and financial details |
| System information | Targeted attacks based on device profile |
| Application data | Access to enterprise tools and services |
How do info stealers operate?
Attackers use a consistent process to collect and transfer sensitive information. These include –
- Infect endpoints through phishing, downloads, or malicious links
- Scan systems for stored credentials and sensitive data
- Extract browser data, cookies, and system information
- The package collected data for exfiltration
- Send data to attacker-controlled servers
This process allows an info stealer to extract critical information without obvious alerts.
How does this impact security operations?
These infections shift the risk from devices to identities.
- Attackers reuse stolen credentials across services
- Security teams struggle to detect silent data exfiltration
- Compromised sessions bypass authentication controls
- Investigation becomes complex without endpoint context
Detecting an info stealer requires visibility into abnormal endpoint behavior.
How does Hexnode support detection and response?
Hexnode’s XDR solution helps security teams investigate suspicious activity linked to these threats by providing visibility into endpoint behavior. It enables teams to review incidents and take controlled response actions on affected devices.
FAQs
1. How does an info stealer differ from spyware?
An info stealer extracts stored data, while spyware focuses on monitoring user activity.
2. Can security tools detect these threats?
Some variants are detected, but many evade signature-based detection.
3. What indicates a possible infection?
Unusual account activity or unauthorized access using valid credentials.