โ
Case #594
service.NIX-Host_Based_Firewall_Disabled
๐ท๏ธ Analyst Verdict Classification
๐ค AI Analysis
๐ Detections (1)
00326-NIX-Host_Based_Firewall_Disabled
medium
Rule: service.NIX-Host_Based_Firewall_Disabled
Hostname: fusionserver ยท Sensor: 04e68799-92b7-41...
Event Type: NEW_PROCESS
Confidence: 0% ยท Verdict: true positive
Event Data:
COMMAND_LINE:
/usr/sbin/iptables -F ufw-caps-testznnx6z06
FILE_PATH:
/usr/sbin/xtables-nft-multi
HASH:
a1610dd70bb5ab04180671280df65b0077b680b627c0b6c51480b327732a762d
PARENT:
{'COMMAND_LINE': '/usr/bin/python3 /usr/sbin/ufw enable', 'FILE_PATH': '/usr/bin/python3.12', 'HASH': '8295ee25cfdb239f3e165afceda7f46de73e2b606ff0e2e3d8623e3facd30acc', 'MEMORY_USAGE': 16281600, 'PARENT_PROCESS_ID': 114528, 'PROCESS_ID': 114529, 'THIS_ATOM': '48add28300d7fec91063c11e69ca0248', 'THREADS': 1, 'TIMESTAMP': 1774846535516, 'USER_ID': 0, 'USER_NAME': 'root'}
PARENT_PROCESS_ID:
114529
PROCESS_ID:
114591
USER_ID:
0
USER_NAME:
root
Analyst Declaration:
๐ Raw Detection JSON
{
"author": "_soteria-rules-edr-926e2197-189b-4d89-9675-c8993933dc9a[bulk][segment]",
"cat": "00326-NIX-Host_Based_Firewall_Disabled",
"detect": {
"event": {
"COMMAND_LINE": "/usr/sbin/iptables -F ufw-caps-testznnx6z06",
"FILE_PATH": "/usr/sbin/xtables-nft-multi",
"HASH": "a1610dd70bb5ab04180671280df65b0077b680b627c0b6c51480b327732a762d",
"PARENT": {
"COMMAND_LINE": "/usr/bin/python3 /usr/sbin/ufw enable",
"FILE_PATH": "/usr/bin/python3.12",
"HASH": "8295ee25cfdb239f3e165afceda7f46de73e2b606ff0e2e3d8623e3facd30acc",
"MEMORY_USAGE": 16281600,
"PARENT_PROCESS_ID": 114528,
"PROCESS_ID": 114529,
"THIS_ATOM": "48add28300d7fec91063c11e69ca0248",
"THREADS": 1,
"TIMESTAMP": 1774846535516,
"USER_ID": 0,
"USER_NAME": "root"
},
"PARENT_PROCESS_ID": 114529,
"PROCESS_ID": 114591,
"USER_ID": 0,
"USER_NAME": "root"
},
"routing": {
"arch": 2,
"did": "",
"event_id": "572dea87-2e9a-4230-b030-3df8bb6bf19d",
"event_time": 1774846539681,
"event_type": "NEW_PROCESS",
"ext_ip": "67.60.122.240",
"hostname": "fusionserver",
"iid": "47501359-645e-4049-906e-e6195da7afcf",
"int_ip": "192.168.1.6",
"latency": 1928,
"moduleid": 2,
"oid": "ad19afae-3759-4207-b06e-8648b225c455",
"parent": "48add28300d7fec91063c11e69ca0248",
"plat": 536870912,
"sid": "04e68799-92b7-411a-9abf-293a59ff94df",
"tags": [
"fusion-soc-case",
"fusion-soc-pulled",
"fusion-soc-triage"
],
"this": "7d44138e30d92e291608673669ca024c"
}
},
"detect_id": "b6de3978-b05d-4b35-857e-7b5769ca024d",
"detect_mtd": {
"description": "Iptables, Firewalld, and UFW are builtin firewall implementations in Linux distributions. Adversaries may disable the firewall in order to bypass controls of network use.",
"falsepositives": [
"System Administrators may infrequently disable or stop the firewall to troubleshoot issues."
],
"references": [
"https://attack.mitre.org/techniques/T1562/004/",
"https://threatpost.com/six-malicious-linux-shell-scripts-how-to-stop-them/168127/",
"https://www.cyberciti.biz/faq/linux-howto-disable-remove-firewall/"
],
"tags": [
"attack.t1562",
"attack.t1562.004"
]
},
"gen_time": 1774846541609,
"link": "https://app.limacharlie.io/orgs/ad19afae-3759-4207-b06e-8648b225c455/sensors/04e68799-92b7-411a-9abf-293a59ff94df/timeline?time=1774846539\u0026selected=7d44138e30d92e291608673669ca024c",
"namespace": "general",
"priority": 2,
"routing": {
"arch": 2,
"did": "",
"event_id": "572dea87-2e9a-4230-b030-3df8bb6bf19d",
"event_time": 1774846539681,
"event_type": "NEW_PROCESS",
"ext_ip": "67.60.122.240",
"hostname": "fusionserver",
"iid": "47501359-645e-4049-906e-e6195da7afcf",
"int_ip": "192.168.1.6",
"latency": 1928,
"moduleid": 2,
"oid": "ad19afae-3759-4207-b06e-8648b225c455",
"parent": "48add28300d7fec91063c11e69ca0248",
"plat": 536870912,
"sid": "04e68799-92b7-411a-9abf-293a59ff94df",
"tags": [
"fusion-soc-case",
"fusion-soc-pulled",
"fusion-soc-triage"
],
"this": "7d44138e30d92e291608673669ca024c"
},
"rule_tags": [
"attack.t1562.004",
"attack.t1562",
"ext:soteria-rules-edr"
],
"source": "ad19afae-3759-4207-b06e-8648b225c455.47501359-645e-4049-906e-e6195da7afcf.04e68799-92b7-411a-9abf-293a59ff94df.20000000.2",
"source_rule": "service.NIX-Host_Based_Firewall_Disabled",
"ts": 1774846541000
}
๐ Threat Intel JSON
{
"virustotal": {
"malicious": false,
"provider": "virustotal",
"reputation": 0,
"stats": {
"confirmed-timeout": 0,
"failure": 0,
"harmless": 0,
"malicious": 0,
"suspicious": 0,
"timeout": 0,
"type-unsupported": 11,
"undetected": 65
}
}
}
๐ค Triage JSON
{
"confidence": 0.0,
"error": "llm_unavailable",
"false_positive_reason": null,
"investigation_questions": [],
"iocs_extracted": [],
"mitre_techniques": [],
"recommended_actions": [
"Manual review required"
],
"risk_score": 50,
"severity": "medium",
"summary": "LLM analysis unavailable \u2014 all models failed. Manual review required.",
"verdict": "true_positive"
}
โ๏ธ Response Actions
| Action | Target | Status | Result | |
|---|---|---|---|---|
| tag | failed | 401 Client Error: Unauthorized for url: https://api.limacharlie.io/v1/04e68799-92b7-411a-9abf-293a59ff94df/tags?tags=fusionsoc-investigated | ||
| recommended | executed | General Activity Sweep: 0 events found | ||
| recommended | executed | General Activity Sweep: 0 events found |
๐ Add Note
๐ฌ Notes (4)
๐ค FusionSOC AI
2026-03-30T06:10
๐ค FusionSOC AI
2026-03-30T06:08
๐ค FusionSOC AI
2026-03-30T06:08
๐ค FusionSOC AI
2026-03-30T06:08
๐ Timeline
2026-03-30T06:10:47
FusionSOC AI
Note by FusionSOC AI: ## ๐ณ๏ธ Secondary Vote (RAG-Enhanced) **Vote:** UNANIMOUS (3/3 โ FALSE POSITIVE) - dgx-122b: false_positive (low, 95% con...
2026-03-30T06:08:08
FusionSOC AI
Status changed: investigating โ investigating
2026-03-30T06:08:08
FusionSOC
Action recommended โ executed: General Activity Sweep: 0 events found
2026-03-30T06:08:08
FusionSOC AI
Note by FusionSOC AI: ## ๐ General Activity Sweep **Action:** Add to allowlist if recurring **Sensor:** `04e68799-92b7-41...` **Time Window:**...
2026-03-30T06:08:07
FusionSOC
Response action queued: recommended on Add to allowlist if recurring
2026-03-30T06:08:07
FusionSOC AI
Status changed: open โ investigating
2026-03-30T06:08:07
FusionSOC
Action recommended โ executed: General Activity Sweep: 0 events found
2026-03-30T06:08:07
FusionSOC AI
Note by FusionSOC AI: ## ๐ General Activity Sweep **Action:** No action required **Sensor:** `04e68799-92b7-41...` **Time Window:** +/- 2 mins...
2026-03-30T06:08:07
FusionSOC
Response action queued: recommended on No action required
2026-03-30T06:08:07
FusionSOC
Action tag โ failed: 401 Client Error: Unauthorized for url: https://api.limacharlie.io/v1/04e68799-92b7-411a-9abf-293a59ff94df/tags?tags=fusionsoc-investigated
2026-03-30T06:08:07
FusionSOC
Response action queued: tag on 04e68799-92b7-411a-9abf-293a59ff94df:fusionsoc-investigated
2026-03-30T06:08:07
FusionSOC AI
Detection b6de3978-b05d-4b35-857e-7b5769ca024d triaged as false_positive (low severity, confidence: 95%)
2026-03-30T06:08:07
FusionSOC AI
Case created from detection: service.NIX-Host_Based_Firewall_Disabled