firefox.exe
Sources: 300M+ executions observed in the wild.
Summary
Mozilla Firefox web browser. Uses a multi-process architecture with separate content, GPU, and extension processes.
firefox.exe is the 170th most commonly executed Windows program in EchoTrail's dataset, observed 93,754 times across enterprise environments. It typically runs from C:\Program Files (x86)\Mozilla Firefox and it is most often launched by firefox.exe.
Get this in your tools
The same record for firefox.exe, by REST or as an MCP tool. Free key, no card.
curl -H "Authorization: Bearer $ECHOTRAIL_KEY" \
https://api.echotrail.io/v1/process/firefox.exeFree returns the summary. Team returns the full record you see on this page. Endpoint docs
Behavior
Top Paths
- C:\Program Files (x86)\Mozilla Firefox58.47%
- C:\Program Files\Mozilla Firefox36.29%
- C:\Users\...5.16%
- C:\...0.08%
Top Hashes (SHA256)
- e1010feb5e9d4726c2a8bf092d3f00521cccb2ee7189273eeb8d297a469104b99.67%
- 4b69ae5b7d548efc56fdbe2e650ce2b519ae0c9c928640023077b956c51a71387.84%
- ca1908a1e033add60a2508676343fdc6d2968cfa7c2ad55075121e66ebf58d5a5.97%
- b545f86afd3d4fa8e8c1e1f86ce1b060accf79ad9b1be6ce3a51067da8561c864.69%
- 58e603d7d22e792719e2d3199f69414f4578836de4b5e7ba75d8e23fa209ff834.29%
- 11919097ac77d204232674e4ff4dfbc8875dab663e28ce4eeb2419cbc16dbb8d3.76%
- 6bcaa2b71971433cfeeea784a782c57e1a8afc209beec285dcb037b20c9c0f353.32%
- d25d8b21ad3b8123634d8968c8c19aa1f2c345442de561251ad13e2b53bd6b0a3.04%
- 321fc20533971feb7ee0b2c78ed1f69032ea41a7e2a44388648e2d3818f9c5b92.85%
- 0ab5c89a52a289c0e64a46847f12f478e9e4a68a6e98d737363f338f8dd724df2.52%
Process Ancestry
Top Grandparents
- explorer.exe70.86%
- userinit.exe8.78%
- updater.exe5.81%
- KeePass.exe4.64%
- OUTLOOK.EXE4.01%
- firefox.exe1.48%
- svchost.exe0.24%
- setup-stub.exe0.2%
- HelpPane.exe0.12%
- lync.exe0.11%
Top Parents
- firefox.exe75.48%
- explorer.exe9.75%
- OUTLOOK.EXE6.12%
- KeePass.exe2.65%
- svchost.exe2.2%
- updater.exe0.81%
- lync.exe0.29%
- RuntimeBroker.exe0.11%
- EXCEL.EXE0.1%
- IronKey.exe0.07%
Top Children
- firefox.exe80.52%
- pingsender.exe9.17%
- plugin-container.exe1.82%
- AcroRd32.exe1.63%
- updater.exe1.07%
- Zoom.exe0.79%
- EXCEL.EXE0.74%
- protocolhandler.exe0.73%
- WINWORD.EXE0.55%
- OUTLOOK.EXE0.39%
Security Analysis
What does firefox.exe normally do?
Located in C:\Program Files\Mozilla Firefox or C:\Program Files (x86)\Mozilla Firefox. Multi-process — many instances normal.
When is firefox.exe suspicious?
Spawning shells (cmd.exe, powershell.exe). Running from unexpected paths. Scheduled tasks launching the browser. DLL sideloading.
How do attackers abuse firefox.exe?
Same as other browsers. DLL search order hijacking. Drive-by downloads. Firefox credential store can be targeted for credential theft (key4.db, logins.json).
Detection guidance
Monitor for shell spawning. Credential store file access by non-Firefox processes.
False positive notes
Multiple instances normal. Updates spawn temporary processes.
Related Processes
Ask Rocky about firefox.exe
Rocky is the free chat demo. It answers from this same dataset, no account needed.
This page is the Team-tier API record for firefox.exe. The free tier returns the summary, 500 lookups a month. Or ask Rocky.