UDP traffic
Datagrams matching proto:netbios sent to HoneyLabs sensors over UDP in the last 7 days. DNS questions and QUIC client fingerprints are decoded on the sensor. Other datagrams are kept as their first bytes and labelled by protocol where it can be recognised.
A UDP source address can be forged, so each address listed here either sent the traffic or was impersonated by whoever did. UDP traffic is kept out of verdicts, feeds, watchlists and alerts.
87
Datagrams
45
Source addresses
26
Networks
14
Countries
5
Destination ports
Traffic by type
Service queries
87 datagrams from 45 sourcesRequests a service answers without a handshake. Scanners send them to find open DNS, NTP, SNMP or SSDP servers, which are also the servers reflection attacks abuse.
Latest NetBIOS datagram, to 137/udp
payload bytes
00000000 e5 d8 00 00 00 01 00 00 00 00 00 00 20 43 4b 41 |............ CKA| 00000010 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 |AAAAAAAAAAAAAAAA| 00000020 41 41 41 41 41 41 41 41 41 41 41 41 41 00 00 21 |AAAAAAAAAAAAA..!| 00000030 00 01 |..|
Amplification checks
Probes for services that answer a small request with a much larger reply, the property reflection attacks rely on.
| Service | Port | Datagrams | Sources | Factor |
|---|---|---|---|---|
| NetBIOS | 137/udp +3 | 87 | 45 | 3.8 |
The factor is how many bytes a reachable server can send back for each byte it receives, as published by CISA in alert TA14-017A.
Destination ports
Networks
- AS52308 AGUAS DEL COLORADO SAPEM from 1 source9
- AS401661 EMBNEX, LLC from 1 source9
- AS215925 Vpsvault.host Ltd from 2 sources8
- AS20052 Arbor Networks, Inc. from 5 sources7
- AS12876 Scaleway SAS from 1 source6
- AS264617 GRUPO PANAGLOBAL 15 S.A from 3 sources6
- AS63949 Akamai Connected Cloud from 3 sources6
- AS398324 Censys, Inc. from 2 sources4
- AS6939 Hurricane Electric LLC from 4 sources4
- AS396982 Google LLC from 3 sources3
Countries
Source addresses (unverified)
| Address | Network | Cc | Sends | Datagrams | Last seen (UTC) |
|---|---|---|---|---|---|
| 190.108.42.138 | AS52308 AGUAS DEL COLORADO SAPEM | AR | NetBIOS | 9 | 2026-10-05 20:39 |
| 16.5.0.234 | AS401661 EMBNEX, LLC | BR | NetBIOS | 9 | 2026-10-05 15:55 |
| 62.210.90.215 | AS12876 Scaleway SAS | FR | NetBIOS | 6 | 2026-10-06 16:53 |
| 172.104.233.204 | AS63949 Akamai Connected Cloud | DE | NetBIOS | 4 | 2026-10-06 07:39 |
| 45.198.224.251 | AS215925 Vpsvault.host Ltd | US | NetBIOS | 4 | 2026-10-06 09:39 |
| 45.205.1.231 | AS215925 Vpsvault.host Ltd | BR | NetBIOS | 4 | 2026-10-06 10:03 |
| 185.94.111.1 | AS51115 HLL LLC | RU | NetBIOS | 3 | 2026-10-06 11:26 |
| 185.36.81.23 | AS209605 UAB Host Baltic | LT | NetBIOS | 3 | 2026-10-06 13:12 |
| 66.132.172.242 | AS398324 Censys, Inc. | US | NetBIOS | 3 | 2026-10-06 09:35 |
| 165.154.29.202 | AS135377 UCLOUD INFORMATION TECHNOLOGY (HK) LIMIT | SG | NetBIOS | 2 | 2026-10-05 18:46 |
| 146.88.241.80 | AS20052 Arbor Networks, Inc. | US | NetBIOS | 2 | 2026-10-05 14:18 |
| 146.88.240.28 | AS20052 Arbor Networks, Inc. | US | NetBIOS | 2 | 2026-10-06 05:26 |
| 170.231.237.214 | AS264617 GRUPO PANAGLOBAL 15 S.A | PA | NetBIOS | 2 | 2026-10-06 00:27 |
| 170.231.236.98 | AS264617 GRUPO PANAGLOBAL 15 S.A | PA | NetBIOS | 2 | 2026-10-06 01:22 |
| 185.191.236.38 | AS264617 GRUPO PANAGLOBAL 15 S.A | CH | NetBIOS | 2 | 2026-10-06 01:22 |
| 146.88.240.27 | AS20052 Arbor Networks, Inc. | US | NetBIOS | 1 | 2026-10-05 13:05 |
| 182.48.201.142 | AS45769 D-Vois Broadband Pvt Ltd | IN | NetBIOS | 1 | 2026-10-06 08:39 |
| 41.226.180.220 | AS37705 TOPNET | TN | NetBIOS | 1 | 2026-10-06 10:00 |
| 147.185.132.138 | AS396982 Google LLC | US | NetBIOS | 1 | 2026-10-06 03:31 |
| 47.251.84.56 | AS45102 Alibaba (US) Technology Co., Ltd. | US | NetBIOS | 1 | 2026-10-05 22:25 |
Latest datagrams
payload bytes
00000000 e5 d8 00 00 00 01 00 00 00 00 00 00 20 43 4b 41 |............ CKA| 00000010 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 |AAAAAAAAAAAAAAAA| 00000020 41 41 41 41 41 41 41 41 41 41 41 41 41 00 00 21 |AAAAAAAAAAAAA..!| 00000030 00 01 |..|
payload bytes
00000000 b3 2d 00 00 00 01 00 00 00 00 00 00 20 43 4b 41 |.-.......... CKA| 00000010 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 |AAAAAAAAAAAAAAAA| 00000020 41 41 41 41 41 41 41 41 41 41 41 41 41 00 00 21 |AAAAAAAAAAAAA..!| 00000030 00 01 |..|
payload bytes
00000000 80 f0 00 10 00 01 00 00 00 00 00 00 20 43 4b 41 |............ CKA| 00000010 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 |AAAAAAAAAAAAAAAA| 00000020 41 41 41 41 41 41 41 41 41 41 41 41 41 00 00 21 |AAAAAAAAAAAAA..!| 00000030 00 01 |..|
payload bytes
00000000 13 37 00 00 00 01 00 00 00 00 00 00 20 43 4b 41 |.7.......... CKA| 00000010 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 |AAAAAAAAAAAAAAAA| 00000020 41 41 41 41 41 41 41 41 41 41 41 41 41 00 00 21 |AAAAAAAAAAAAA..!| 00000030 00 01 |..|
payload bytes
00000000 a2 48 00 00 00 01 00 00 00 00 00 00 20 43 4b 41 |.H.......... CKA| 00000010 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 |AAAAAAAAAAAAAAAA| 00000020 41 41 41 41 41 41 41 41 41 41 41 41 41 00 00 21 |AAAAAAAAAAAAA..!| 00000030 00 01 |..|
payload bytes
00000000 58 8d 00 00 00 01 00 00 00 00 00 00 20 43 4b 41 |X........... CKA| 00000010 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 |AAAAAAAAAAAAAAAA| 00000020 41 41 41 41 41 41 41 41 41 41 41 41 41 00 00 21 |AAAAAAAAAAAAA..!| 00000030 00 01 |..|
payload bytes
00000000 47 8d 01 00 00 01 00 00 00 00 00 00 20 43 4b 41 |G........... CKA| 00000010 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 |AAAAAAAAAAAAAAAA| 00000020 41 41 41 41 41 41 41 41 41 41 41 41 41 00 00 21 |AAAAAAAAAAAAA..!| 00000030 00 01 |..|
payload bytes
00000000 35 37 01 00 00 01 00 00 00 00 00 00 20 43 4b 41 |57.......... CKA| 00000010 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 |AAAAAAAAAAAAAAAA| 00000020 41 41 41 41 41 41 41 41 41 41 41 41 41 00 00 21 |AAAAAAAAAAAAA..!| 00000030 00 01 |..|
payload bytes
00000000 85 93 01 00 00 01 00 00 00 00 00 00 20 43 4b 41 |............ CKA| 00000010 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 |AAAAAAAAAAAAAAAA| 00000020 41 41 41 41 41 41 41 41 41 41 41 41 41 00 00 21 |AAAAAAAAAAAAA..!| 00000030 00 01 |..|
payload bytes
00000000 e5 d8 00 00 00 01 00 00 00 00 00 00 20 43 4b 41 |............ CKA| 00000010 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 |AAAAAAAAAAAAAAAA| 00000020 41 41 41 41 41 41 41 41 41 41 41 41 41 00 00 21 |AAAAAAAAAAAAA..!| 00000030 00 01 |..|
payload bytes
00000000 00 06 00 00 00 01 00 00 00 00 00 00 20 43 4b 41 |............ CKA| 00000010 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 |AAAAAAAAAAAAAAAA| 00000020 41 41 41 41 41 41 41 41 41 41 41 41 41 00 00 21 |AAAAAAAAAAAAA..!| 00000030 00 01 |..|
payload bytes
00000000 e5 d8 00 00 00 01 00 00 00 00 00 00 20 43 4b 41 |............ CKA| 00000010 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 |AAAAAAAAAAAAAAAA| 00000020 41 41 41 41 41 41 41 41 41 41 41 41 41 00 00 21 |AAAAAAAAAAAAA..!| 00000030 00 01 |..|
payload bytes
00000000 e5 d8 00 00 00 01 00 00 00 00 00 00 20 43 4b 41 |............ CKA| 00000010 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 |AAAAAAAAAAAAAAAA| 00000020 41 41 41 41 41 41 41 41 41 41 41 41 41 00 00 21 |AAAAAAAAAAAAA..!| 00000030 00 01 |..|
payload bytes
00000000 e5 d8 00 00 00 01 00 00 00 00 00 00 20 43 4b 41 |............ CKA| 00000010 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 |AAAAAAAAAAAAAAAA| 00000020 41 41 41 41 41 41 41 41 41 41 41 41 41 00 00 21 |AAAAAAAAAAAAA..!| 00000030 00 01 |..|
payload bytes
00000000 e5 d8 00 00 00 01 00 00 00 00 00 00 20 43 4b 41 |............ CKA| 00000010 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 |AAAAAAAAAAAAAAAA| 00000020 41 41 41 41 41 41 41 41 41 41 41 41 41 00 00 21 |AAAAAAAAAAAAA..!| 00000030 00 01 |..|