Cereal2 · Observed attack

AS28203 UDP flood on 189.91.43.0/24 | 2026-10-11 21:16:05Z

· Event #326273

WhatsApp

Country-level precision. botnet.cl stores the target country, never a city or coordinates, so the marker sits at the country's center.

What this method does

Cereal2 vector 19: Configurable custom-payload UDP flood.

All Configurable custom-payload UDP flood observations
Observed
2026-10-11T21:16:05.658Z
Recorded

Recorded 136ms after observation

Affected network
189.91.43.0/24
Network operator
Webcenter Sist Prest de Servicos de InformaticaAS28203
Location
Brazil
Method
Configurable custom-payload UDP floodVector 19
Protocol
udp
Destination port
Randomized
Commanded duration
1m
Observed via
101.34.239.216119.45.12.154130.94.1.105130.94.107.174130.94.16.10130.94.17.15130.94.32.14130.94.77.120137.184.100.23206.189.2.8638.60.136.14038.60.199.12638.60.238.10943.136.129.13177.232.43.2182.157.209.4194.183.235.1194.183.235.14294.183.235.15994.183.235.24995.182.87.134

All controllers with retained sightings of this order. Older records may have incomplete source coverage.

Geolocation data
ipinfo-lite · 2026-09

Snapshot taken at ingestion; it is never re-resolved later.

Payload observed in C2 command

Observed command data; this does not establish what reached the target.

Custom payload · 32 bytes

Decoded template · 32 bytes

OffsetHexadecimalASCII
00000000da d1 ac 71 1c 03 72 b6...q..r.
000000088e 82 57 09 00 f6 22 b0..W...".
00000010b6 b5 da 30 3e 37 5f 07...0>7_.
000000189f c2 92 65 2f e2 cc 29...e/..)

8 or 16 bytes per row, depending on screen width. Dots represent non-printable bytes.

SHA-256 of decoded template

22679d88437891a96a75b7f7343460c237d1215fca3756cb8062b1a208d0b456

Configured datagram length
1400 bytes
Minimum length option
1000 bytes
Maximum length option
1400 bytes

Length options are command settings, not measured packet sizes. The decoded template can differ from the resulting datagrams.

Original encoded value
dad1ac711c0372b68e82570900f622b0b6b5da303e375f079fc292652fe2cc29

Original bytes (Base64)

ZGFkMWFjNzExYzAzNzJiNjhlODI1NzA5MDBmNjIyYjBiNmI1ZGEzMDNlMzc1ZjA3OWZjMjkyNjUyZmUyY2MyOQ==

Other attacks on this network

Within 24 hours of this observation

Other attacks in this country

Within 24 hours of this observation

botnet.cl reports infrastructure it observed. An address appearing here identifies a target or a relay, not a person responsible for the attack.