Cereal2 · Observed attack

AS28665 UDP flood on 177.136.136.0/24 | 2026-10-14 10:38:04Z

· Event #329527

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
2026-10-14T10:38:04.245Z
Recorded

Recorded 137ms after observation

Affected network
177.136.136.0/24
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
0000000024 43 cd 66 e9 36 51 e5$C.f.6Q.
00000008eb 60 94 a3 d5 31 b3 f5.`...1..
0000001067 02 ed 2e eb 45 bd 16g....E..
0000001898 5c 0e 56 8a fb 8a b0.\.V....

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

SHA-256 of decoded template

34f9f6bf8b91d1844a2c7cadd6372fcc5474d3542dc4527ed43fad778d160a15

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
2443cd66e93651e5eb6094a3d531b3f56702ed2eeb45bd16985c0e568afb8ab0

Original bytes (Base64)

MjQ0M2NkNjZlOTM2NTFlNWViNjA5NGEzZDUzMWIzZjU2NzAyZWQyZWViNDViZDE2OTg1YzBlNTY4YWZiOGFiMA==

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.