Cereal2 · Observed attack

AS28665 UDP flood on 177.136.139.0/24 | 2026-10-13 10:51:30Z

· Event #328262

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
2026-10-13T10:51:30.924Z
Recorded

Recorded 140ms after observation

Affected network
177.136.139.0/24
Network operator
Predlink Rede de Telecomunicções LtdaAS28665
Location
Brazil
Method
Configurable custom-payload UDP floodVector 19
Protocol
udp
Destination port
Randomized
Commanded duration
1m
Observed via
101.34.239.216119.45.12.154139.59.33.238157.230.127.22164.90.186.13165.22.152.158170.106.35.197178.128.223.92188.166.12.8206.189.228.1743.136.129.13143.153.106.22943.156.101.22843.157.198.13743.159.46.15577.232.43.2182.157.209.4194.183.235.1194.183.235.14294.183.235.15994.183.235.24995.182.87.134

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
000000001e 11 44 16 d5 f8 59 37..D...Y7
000000084d 20 d5 51 7b 05 62 09M .Q{.b.
00000010e9 03 31 d6 ac d8 b1 71..1....q
00000018e5 35 20 a8 27 98 3e c2.5 .'.>.

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

SHA-256 of decoded template

a2cb9c3d73928e664c02208312710bcb53d9d82a26d9e123d0ed0983b003ba9e

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
1e114416d5f859374d20d5517b056209e90331d6acd8b171e53520a827983ec2

Original bytes (Base64)

MWUxMTQ0MTZkNWY4NTkzNzRkMjBkNTUxN2IwNTYyMDllOTAzMzFkNmFjZDhiMTcxZTUzNTIwYTgyNzk4M2VjMg==

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.