Suspicious Browser History Dumping via NirSoft Tool via process_creation

ATT&CK techniques

Discovery → Collection

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
- T1217Browser Information Discovery
Lateral Movement
Collection
- T1005Data from Local System
C2
Exfiltration
Impact

What it detects

This rule detects execution of the NirSoft BrowsingHistoryView utility, which the REMCOS RAT abuses through its DumpBrowserHistoryUsingNirsoft command to collect victim browsing data. Attackers stage this signed third-party tool to harvest history for reconnaissance and credential context. Its appearance outside sanctioned administrative use is suspicious.

Reporting behind it

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Suspicious Browser History Dumping via NirSoft Tool via process_creation

Pivot detection · T1005 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.

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