Researchers at Kaspersky Lab today confirmed that the cybercriminals behind the Lurk Trojan were also responsible for the development and distribution of the Angler Exploit Kit. Angler was one of the most notorious exploit kits on the Internet, updated frequently and sold underground to criminals wishing to distribute everything from adware, to click-fraud malware, to ransomware. The June arrest of a Russian cybercrime gang also put to rest the infamous Angler exploit kit. The Lurk gang s takedown came after a period of carelessness on its keepers behalf.
Source: https://threatpost.com/inside-the-demise-of-the-angler-exploit-kit/120222/

