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[Auditbeat] Add system module socket dataset ECS categorization fields #18036

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merged 5 commits into from
May 5, 2020
Merged

[Auditbeat] Add system module socket dataset ECS categorization fields #18036

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1f525b9
[Auditbeat] Add system module socket dataset ECS categorization fields
Apr 28, 2020
65a3856
Add changelog entry
Apr 28, 2020
de01e2b
Add related fields and additional connection type
May 5, 2020
d1d5173
Merge branch 'master' into auditbeat-system-socket-update
May 5, 2020
03b4ab8
update integration test expectations
May 5, 2020
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1 change: 1 addition & 0 deletions CHANGELOG.next.asciidoc
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Original file line number Diff line number Diff line change
Expand Up @@ -224,6 +224,7 @@ https://github.com/elastic/beats/compare/v7.0.0-alpha2...master[Check the HEAD d
- Fix syscall kprobe arguments for 32-bit systems in socket module. {pull}17500[17500]
- Fix memory leak on when we miss socket close kprobe events. {pull}17500[17500]
- Add system module process dataset ECS categorization fields. {pull}18032[18032]
- Add system module socket dataset ECS categorization fields. {pull}18036[18036]

*Filebeat*

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20 changes: 19 additions & 1 deletion x-pack/auditbeat/module/system/socket/state.go
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Expand Up @@ -884,6 +884,11 @@ func (f *flow) toEvent(final bool) (ev mb.Event, err error) {
if inetType == inetTypeIPv6 && f.local.addr.IP.To4() != nil && f.remote.addr.IP.To4() != nil {
inetType = inetTypeIPv4
}
eventType := []string{"info"}
if inetType == inetTypeIPv6 || inetType == inetTypeIPv4 {
eventType = append(eventType, "connection")
}

root := common.MapStr{
"source": src,
"client": src,
Expand All @@ -906,7 +911,8 @@ func (f *flow) toEvent(final bool) (ev mb.Event, err error) {
"event": common.MapStr{
"kind": "event",
"action": "network_flow",
"category": "network_traffic",
"category": []string{"network", "network_traffic"},
"type": eventType,
"start": f.createdTime,
"end": f.lastSeenTime,
"duration": f.lastSeenTime.Sub(f.createdTime).Nanoseconds(),
Expand All @@ -917,6 +923,17 @@ func (f *flow) toEvent(final bool) (ev mb.Event, err error) {
},
}

relatedIPs := []string{}
if len(localAddr.IP) != 0 {
relatedIPs = append(relatedIPs, localAddr.IP.String())
}
if len(localAddr.IP) > 0 {
relatedIPs = append(relatedIPs, remoteAddr.IP.String())
}
if len(relatedIPs) > 0 {
root.Put("related.ip", relatedIPs)
}

metricset := common.MapStr{
"kernel_sock_address": fmt.Sprintf("0x%x", f.sock),
}
Expand All @@ -940,6 +957,7 @@ func (f *flow) toEvent(final bool) (ev mb.Event, err error) {
root.Put("group.id", gid)
if name := userCache.LookupUID(uid); name != "" {
root.Put("user.name", name)
root.Put("related.user", []string{name})
}
if name := groupCache.LookupGID(gid); name != "" {
root.Put("group.name", name)
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17 changes: 15 additions & 2 deletions x-pack/auditbeat/module/system/socket/state_test.go
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Expand Up @@ -54,7 +54,7 @@ func TestTCPConnWithProcess(t *testing.T) {
lAddr, rAddr := ipv4(localIP), ipv4(remoteIP)
evs := []event{
callExecve(meta(1234, 1234, 1), []string{"/usr/bin/curl", "https://example.net/", "-o", "/tmp/site.html"}),
&commitCreds{Meta: meta(1234, 1234, 2), UID: 501, GID: 20, EUID: 501, EGID: 20},
&commitCreds{Meta: meta(1234, 1234, 2), UID: 0, GID: 20, EUID: 501, EGID: 20},
&execveRet{Meta: meta(1234, 1234, 2), Retval: 1234},
&inetCreate{Meta: meta(1234, 1235, 5), Proto: 0},
&sockInitData{Meta: meta(1234, 1235, 5), Sock: sock},
Expand Down Expand Up @@ -119,7 +119,12 @@ func TestTCPConnWithProcess(t *testing.T) {
"network.type": "ipv4",
"process.pid": 1234,
"process.name": "curl",
"user.id": "501",
"user.id": "0",
"user.name": "root",
"event.type": []string{"info", "connection"},
"event.category": []string{"network", "network_traffic"},
"related.ip": []string{localIP, remoteIP},
"related.user": []string{"root"},
} {
if !assertValue(t, flow, expected, field) {
t.Fatal("expected value not found")
Expand Down Expand Up @@ -212,6 +217,8 @@ func TestTCPConnWithProcessSocketTimeouts(t *testing.T) {
"process.pid": 1234,
"process.name": "curl",
"user.id": "501",
"event.type": []string{"info", "connection"},
"event.category": []string{"network", "network_traffic"},
} {
if !assertValue(t, flow, expected, field) {
t.Fatal("expected value not found")
Expand All @@ -234,6 +241,8 @@ func TestTCPConnWithProcessSocketTimeouts(t *testing.T) {
"network.direction": "unknown",
"network.transport": "tcp",
"network.type": "ipv4",
"event.type": []string{"info", "connection"},
"event.category": []string{"network", "network_traffic"},
} {
if !assertValue(t, flow, expected, field) {
t.Fatal("expected value not found")
Expand Down Expand Up @@ -300,6 +309,8 @@ func TestUDPOutgoingSinglePacketWithProcess(t *testing.T) {
"process.pid": 1234,
"process.name": "exfil-udp",
"user.id": "501",
"event.type": []string{"info", "connection"},
"event.category": []string{"network", "network_traffic"},
} {
assertValue(t, flow, expected, field)
}
Expand Down Expand Up @@ -370,6 +381,8 @@ func TestUDPIncomingSinglePacketWithProcess(t *testing.T) {
"process.pid": 1234,
"process.name": "exfil-udp",
"user.id": "501",
"event.type": []string{"info", "connection"},
"event.category": []string{"network", "network_traffic"},
} {
assertValue(t, flow, expected, field)
}
Expand Down
4 changes: 2 additions & 2 deletions x-pack/auditbeat/tests/system/test_system_socket.py
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Expand Up @@ -617,7 +617,7 @@ def expected(self):
"destination.packets": 1,
"destination.port": self.dns_server_addr[1],
"event.action": "network_flow",
"event.category": "network_traffic",
"event.category": ["network", "network_traffic"],
"event.dataset": "socket",
"event.kind": "event",
"event.module": "system",
Expand Down Expand Up @@ -648,7 +648,7 @@ def expected(self):
"destination.packets": server_packets,
"destination.port": self.server_addr[1],
"event.action": "network_flow",
"event.category": "network_traffic",
"event.category": ["network", "network_traffic"],
"event.dataset": "socket",
"event.kind": "event",
"event.module": "system",
Expand Down