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.
331
Datagrams
167
Source addresses
46
Networks
25
Countries
18
Destination ports
Traffic by type
Service queries
331 datagrams from 167 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 | 331 | 167 | 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
- AS396982 Google LLC from 39 sources39
- AS215925 Vpsvault.host Ltd from 2 sources38
- AS6939 Hurricane Electric LLC from 22 sources23
- AS398324 Censys, Inc. from 10 sources23
- AS135377 UCLOUD INFORMATION TECHNOLOGY (HK) LIMIT from 4 sources23
- AS12876 Scaleway SAS from 1 source23
- AS8075 Microsoft Corporation from 21 sources21
- AS264617 GRUPO PANAGLOBAL 15 S.A from 3 sources16
- AS20052 Arbor Networks, Inc. from 9 sources12
- AS209630 LLC Vash Kredit Bank from 1 source12
Countries
Source addresses (unverified)
| Address | Network | Cc | Sends | Datagrams | Last seen (UTC) |
|---|---|---|---|---|---|
| 62.210.90.215 | AS12876 Scaleway SAS | FR | NetBIOS | 23 | 2026-10-11 00:37 |
| 45.205.1.231 | AS215925 Vpsvault.host Ltd | BR | NetBIOS | 19 | 2026-10-10 23:21 |
| 45.198.224.251 | AS215925 Vpsvault.host Ltd | US | NetBIOS | 19 | 2026-10-10 17:05 |
| 66.132.172.242 | AS398324 Censys, Inc. | US | NetBIOS | 13 | 2026-10-10 15:34 |
| 165.154.164.21 | AS135377 UCLOUD INFORMATION TECHNOLOGY (HK) LIMIT | DE | NetBIOS | 13 | 2026-10-08 08:08 |
| 151.243.11.230 | AS209630 LLC Vash Kredit Bank | AE | NetBIOS | 12 | 2026-10-10 04:50 |
| 185.191.236.38 | AS264617 GRUPO PANAGLOBAL 15 S.A | CH | NetBIOS | 11 | 2026-10-10 22:34 |
| 190.108.42.138 | AS52308 AGUAS DEL COLORADO SAPEM | AR | NetBIOS | 9 | 2026-10-05 20:39 |
| 185.94.111.1 | AS51115 HLL LLC | RU | NetBIOS | 9 | 2026-10-11 04:00 |
| 16.5.0.234 | AS401661 EMBNEX, LLC | BR | NetBIOS | 9 | 2026-10-05 15:55 |
| 185.36.81.23 | AS209605 UAB Host Baltic | LT | NetBIOS | 5 | 2026-10-09 02:13 |
| 165.154.36.245 | AS135377 UCLOUD INFORMATION TECHNOLOGY (HK) LIMIT | US | NetBIOS | 5 | 2026-10-08 08:29 |
| 185.242.226.166 | AS202425 IP Volume inc | US | NetBIOS | 4 | 2026-10-08 12:50 |
| 172.104.233.204 | AS63949 Akamai Connected Cloud | DE | NetBIOS | 4 | 2026-10-06 07:39 |
| 170.231.236.98 | AS264617 GRUPO PANAGLOBAL 15 S.A | PA | NetBIOS | 3 | 2026-10-10 22:21 |
| 178.44.106.19 | AS12389 Rostelecom | RU | NetBIOS | 3 | 2026-10-09 05:36 |
| 152.32.156.136 | AS135377 UCLOUD INFORMATION TECHNOLOGY (HK) LIMIT | IN | NetBIOS | 3 | 2026-10-08 08:06 |
| 117.104.10.130 | AS10010 TOKAI Communications Corporation | JP | NetBIOS | 3 | 2026-10-10 12:35 |
| 71.6.232.20 | AS10439 CariNet, Inc. | US | NetBIOS | 3 | 2026-10-07 09:01 |
| 165.154.29.202 | AS135377 UCLOUD INFORMATION TECHNOLOGY (HK) LIMIT | SG | NetBIOS | 2 | 2026-10-05 18:46 |
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 d2 a8 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 f9 74 01 00 00 01 00 00 00 00 00 00 20 43 4b 41 |.t.......... 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 21 4d 01 00 00 01 00 00 00 00 00 00 20 43 4b 41 |!M.......... 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 38 f6 00 00 00 01 00 00 00 00 00 00 20 43 4b 41 |8........... 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 38 f6 00 00 00 01 00 00 00 00 00 00 20 43 4b 41 |8........... 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 38 f6 00 00 00 01 00 00 00 00 00 00 20 43 4b 41 |8........... 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 52 17 00 00 00 01 00 00 00 00 00 00 20 43 4b 41 |R........... 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 08 91 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 |..|
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 |..|