Skip to main content
Live Webinar with SANS (June 25)— Agentic CTI Automation for Fun & ProfitRegister Free
Mallory
Back to malware
Malware

Lumma infostealer

Lumma Infostealer is an information-stealing malware family referenced in the provided reporting as “Lumma infostealer” and “Lumma Infostealer.” The content places it in the infostealer category and notes it in security-news coverage, including an item titled “Ninja Browser & Lumma Infostealer.” The strongest operational detail provided is that Lumma infostealer infrastructure was seized during an operation involving the United States, the European Union, and Microsoft. No additional high-confidence details on its infection vector, technical behavior, targeted industries, associated threat actor, supported platforms, or indicators of compromise are directly provided in the content.

Share:
For your environment

Hunt this family in your stack

Mallory pivots from this family to the IOCs, detections, and named campaigns that touch your stack, and pages you when something new lands.

Start free trial
MITRE ATT&CK

Techniques & procedures

13 distinct techniques documented for this family, organized by ATT&CK tactic.

Initial Access

1 technique
T1133External Remote ServicesEvidence1

"...paying Americans to host hardware... part of a shady proxy network that redirects malicious traffic through US residential IP addresses."

Execution

5 techniques
T1059.001PowerShellEvidence1

"What the victims actually paste is a heavily encoded PowerShell command that kicks off..."

T1059.003Windows Command ShellEvidence1

"A second infection path uses a similarly encoded command to fetch a batch script..."

T1059.005Visual BasicEvidence1

"...drops a VBScript file and executes it..."

T1127.001MSBuildEvidence1

"...executes it using a mix of built-in Windows utilities, including MSBuild."

T1204User ExecutionEvidence1

"...tricking Windows users into launching Windows Terminal and pasting malware into it themselves..."

Persistence

2 techniques
T1133External Remote ServicesEvidence1

"...paying Americans to host hardware... part of a shady proxy network that redirects malicious traffic through US residential IP addresses."

T1547Boot or Logon Autostart ExecutionEvidence1

"...extracts further components that establish persistence..."

Privilege Escalation

2 techniques
T1055Process InjectionEvidence1

"...deploys Lumma Stealer... that injects itself into Chrome and Edge processes..."

T1547Boot or Logon Autostart ExecutionEvidence1

"...extracts further components that establish persistence..."

Stealth

2 techniques
T1055Process InjectionEvidence1

"...deploys Lumma Stealer... that injects itself into Chrome and Edge processes..."

T1127.001MSBuildEvidence1

"...executes it using a mix of built-in Windows utilities, including MSBuild."

Credential Access

1 technique
T1555.003Credentials from Web BrowsersEvidence1

"...injects itself into Chrome and Edge processes to siphon off stored login credentials..."

Collection

1 technique
T1560.001Archive via UtilityEvidence1

"The archive tool then extracts further components..."

Command and Control

2 techniques
T1102Web ServiceEvidence1

"...reaches out to cryptocurrency blockchain infrastructure – a trick sometimes dubbed 'EtherHiding'..."

T1105Ingress Tool TransferEvidence1

"...pulls down a renamed copy of the 7-Zip archive utility along with a compressed payload."

Other

1 technique
T1562.001Disable or Modify ToolsEvidence1

"...fiddle with Microsoft Defender exclusions..."

ACTIVITY FEED

Recent activity

2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

2 SOURCESView more in app
What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets match these IOCs, which detections are missing, which campaigns to expect next, and what to do in the next 30 minutes.
Start free trial
IOC matching

Match every observed IP, domain, and hash against your live telemetry.

Threat actor attribution

Named campaigns wielding this family, with evidence pinned to each claim.

Exploited vulnerabilities

CVEs this family uses for access and lateral movement.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

MITRE ATT&CK mapping13

Every documented technique, ranked by evidence weight.

Researcher chatter

Reddit, Mastodon, and CTI community discussion around this family.