SarlackLab C2 Tracking

Kicking ACKs and taking domain names

C2 Map Meta IOCs C2 Hunting Blog Posts Contact

Abused Parent-Domain Forest

Only domain trees from most common 8* C2 shown


Follow @SarlackLab on BlueSky/Mastodon for daily updates on malicious servers
Map history and C2 trends available in /C2-Logs/ directory


The redder: a square appears, the more command-and-control (C2) servers are hosted in that /8 space.
XKCD has a comic explaining IPv4 Hilbert curves

Concerning Ranges

- 154.89.184.0/21

- 104.140.144.0/20

- 104.206.234.0/23

- 38.128.0.0/9

- 178.16.52.0/22

- 38.32.0.0/11

- 91.92.240.0/22

- 124.220.0.0/14

- 104.233.252.0/22

- 158.94.208.0/22


Dangerous Subnets

- 82.77.149.112/28

- 104.206.234.0/23

- 154.89.184.0/21

- 154.91.84.64/27

- 147.185.221.0/24

- 178.16.52.0/22

- 196.251.83.0/24

- 104.140.144.0/20

- 185.241.208.0/24

- 91.92.240.0/22


Heatmap of /8 Spaces Across IPv4


About Sarlack-Lab

I built the Sarlack to "devour malware in a sandbox". The server automatically grabbed and analyzed malware samples for personal research and to assist my SOC. While studying network detection trends, I began to notice patterns among malicious IP addresses and abused parent-domains. I created maps to visualize this threat landscape using the fantastic resources provided by abuse.ch, drb-ra, Dee, Fred HK, Benkow_, Good__Bear, and Paul Melson (as well as the IOCs that the Sarlack uncovers too).

Read more about Sarlack-Lab map generation here