Cereal2 · Observed attack

AS28665 UDP flood on 177.136.153.0/24 | 2026-10-10 21:19:50Z

· Event #324661

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
2026-10-10T21:19:50.487Z
Recorded

Recorded 141ms after observation

Affected network
177.136.153.0/24
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
0000000019 f5 8f 64 60 47 54 6b...d`GTk
0000000832 58 1e b3 64 b5 f3 062X..d...
000000107c 3c 39 c4 51 dd 95 d6|<9.Q...
00000018bc a5 51 79 22 3f 23 33..Qy"?#3

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

SHA-256 of decoded template

7a9c8d4d41ca2823b4b3d92586e0322021acb990f83dbfcb795397100cf8eba4

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
19f58f646047546b32581eb364b5f3067c3c39c451dd95d6bca55179223f2333

Original bytes (Base64)

MTlmNThmNjQ2MDQ3NTQ2YjMyNTgxZWIzNjRiNWYzMDY3YzNjMzljNDUxZGQ5NWQ2YmNhNTUxNzkyMjNmMjMzMw==

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.