Cereal2 · Observed attack

AS28665 UDP flood on 177.136.138.0/24 | 2026-10-14 10:40:04Z

· Event #329529

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
2026-10-14T10:40:04.236Z
Recorded

Recorded 170ms after observation

Affected network
177.136.138.0/24
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
101.34.239.216119.45.12.154170.106.35.19743.136.129.13143.153.106.22943.156.101.22843.157.198.13743.159.46.15543.173.37.5377.232.43.2182.157.209.4194.183.235.1194.183.235.14294.183.235.15994.183.235.24995.182.87.134

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
00000000e9 11 fc f5 0d cc b9 62.......b
0000000811 cb 43 75 d4 99 0e 3f..Cu...?
0000001043 6d 11 cf 75 f7 aa adCm..u...
000000181a b4 9e 1f ab d8 49 db......I.

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

SHA-256 of decoded template

3ce0d5e7e2612292ea64e05132b25675b21b2c8da4decd79c462eeb8b4e29f00

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
e911fcf50dccb96211cb4375d4990e3f436d11cf75f7aaad1ab49e1fabd849db

Original bytes (Base64)

ZTkxMWZjZjUwZGNjYjk2MjExY2I0Mzc1ZDQ5OTBlM2Y0MzZkMTFjZjc1ZjdhYWFkMWFiNDllMWZhYmQ4NDlkYg==

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.