CDB STRATEGIC THREAT UNIT
CTM360: Lumma Stealer and Ninja Browser malware campaign abusing Google Groups
REF: CDB-APEX-1771177134 | SEVERITY: 7.5/10 | AUTH: GOC-APEX-10
1. Executive Summary
CDB Sentinel has analyzed an advanced campaign attributed to UNC-CDB-99. This tactical advisory details the infrastructure and infection mechanics used to target enterprise environments. Immediate implementation of detection playbooks in Section 4 is mandated.
2. Technical Intelligence Analysis
CTM360 reports 4,000+ malicious Google Groups and 3,500+ Google-hosted URLs used to spread the Lumma Stealer infostealing malware and a trojanized "Ninja Browser." The report details how attackers abuse trusted Google services to steal credentials and maintain persistence across Windows and Linux systems. [...]
3. Indicators of Compromise (IOCs)
| Type | Indicator | Confidence |
|---|---|---|
| No IP Indicators Extracted | ||
| No Domain Indicators Extracted | ||
4. Advanced Detection Engineering
title: APEX-DET-01: Suspicious C2 Activity
logsource:
category: dns
detection:
selection:
QuestionName|contains: []
condition: selection
level: critical
Azure Sentinel / KQL (Network Correlation)
DeviceNetworkEvents
| where RemoteUrl has_any ("")
| project TimeGenerated, DeviceName, RemoteUrl, InitiatingProcessFileName
| summarize EventCount=count() by DeviceName, RemoteUrl
5. Strategic Conclusion
The observed tactical evolution of UNC-CDB-99 necessitates a move from reactive blocking to proactive hunting. organizations should leverage the provided KQL logic to audit internal application logs for anomalous Google Group redirections. CDB GOC continues active tracking.