Cereal2 · Observed attack

AS28665 UDP flood on 177.136.156.0/24 | 2026-10-10 19:53:30Z

· Event #324542

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
2026-10-10T19:53:30.647Z
Recorded

Recorded 151ms after observation

Affected network
177.136.156.0/24
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
130.94.1.105130.94.107.174130.94.16.10130.94.17.15130.94.32.14130.94.77.120137.184.100.23206.189.2.8638.60.136.14038.60.199.12638.60.238.10994.183.235.1194.183.235.14294.183.235.15994.183.235.24995.182.87.134

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
00000000ef c5 90 ef 72 a8 7f 68....r..h
0000000894 2b 25 0d 01 7b 33 24.+%..{3$
00000010ed 92 bd c4 6a 46 46 15....jFF.
0000001802 03 fc 21 7d 96 70 60...!}.p`

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

SHA-256 of decoded template

73641c961bce747356662fd5c06d46116fe04ff6cb3e57fd3b5dcec5ad95b25b

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
efc590ef72a87f68942b250d017b3324ed92bdc46a4646150203fc217d967060

Original bytes (Base64)

ZWZjNTkwZWY3MmE4N2Y2ODk0MmIyNTBkMDE3YjMzMjRlZDkyYmRjNDZhNDY0NjE1MDIwM2ZjMjE3ZDk2NzA2MA==

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.