LeakyCreds
NewInstant webhook alerts now available — notified within seconds of any credential detection.Learn more →
Home / Threat Intel / Lumma Stealer
Active Threat Campaign: Lumma Stealer

Check your domain for
Lumma Stealer infections.

We monitor Lumma Stealer logs in real-time. Enter your domain on our scanner to identify exposed credentials associated with this malware family and act before attackers use them.

Scan your domain for Lumma Stealer
Infection Vector
Malvertising loaders and fake software installers
Primary Target
Windows enterprise endpoints and browser sessions
Primary Objective
Session hijacking and credential replay
Monitoring Signal
Browser cookie and wallet artifact exfiltration

About this Malware

Lumma Stealer is a MaaS infostealer that harvests browser credentials, cookies, autofill data, and cryptocurrency wallet files. It frequently uses loader chains, anti-analysis checks, and command-and-control updates. Stolen sessions enable rapid account takeover, while exfiltrated credentials are monetized through private logs, markets, and replay attacks across consumer and enterprise environments.

Security teams usually see Lumma in rapid campaigns where delivery infrastructure rotates quickly. After execution, operators prioritize credential stores, active session tokens, and wallet extensions, then package data for broker resale. Continuous monitoring is important because newly leaked logs can appear days or weeks after the initial endpoint compromise event.

Family
Lumma Stealer
Use Case
Threat exposure triage and response prioritization

Common Indicators in Leaked Logs

  • Sudden credential dumps containing corporate domains and browser session cookies
  • Repeated leaks tied to the same endpoint profile over short time windows
  • Wallet extension data and token artifacts included in the same stolen package
  • New employee exposure records appearing shortly after malvertising spikes

Recommended Actions

  • Force password reset and token revocation for affected accounts
  • Invalidate active web sessions across SSO and customer-facing apps
  • Hunt endpoints for suspicious installers and post-execution persistence
  • Enable ongoing domain monitoring to catch late-published logs

FAQ

What does Lumma Stealer typically steal?

Lumma Stealer campaigns commonly target credentials, browser session material, and identity artifacts that enable account takeover. Monitoring leaked records helps security teams detect exposed users early and reduce attacker dwell time.

How does LeakyCreds detect Lumma Stealer exposure?

LeakyCreds continuously monitors stealer log intelligence and related leak sources, then maps exposed records back to your domain. Teams can validate impact quickly and prioritize remediation by user and risk profile.

What should we do after a positive Lumma Stealer match?

Start with password resets, session revocation, and MFA enforcement for impacted identities. Then investigate endpoint compromise paths, block repeat infection vectors, and keep continuous monitoring active for delayed log publication.

Related Threat Intel

RedLine StealerVidarRhadamanthys