InfoSec Week 3, 2018

Notoriously known Necurs spam botnet is sending millions of spam emails that are pumping shitcoin cryptocurrency named Swisscoin. Attackers are probably invested and are expecting to do pump-and-dump scheme.
https://www.bleepingcomputer.com/news/cryptocurrency/worlds-largest-spam-botnet-is-pumping-and-dumping-an-obscure-cryptocurrency/

Nice article on Russia’s hacking capabilities against the foreign critical infrastructure.
https://www.fastcompany.com/40515682/the-other-scary-foreign-hacking-threat-trump-is-ignoring

Taiwanese police has handed malware-infected USB sticks as prizes for cybersecurity quiz. The malware was some old sample trying to communicate with non-existing C&C server in Poland. The thumb drives were infected by third-party contractor.
https://www.theregister.co.uk/AMP/2018/01/10/taiwanese_police_malware/

New research is analyzing usage of the Certificate Authority Authorization (CAA) DNS records. CAA records enable domain owners to explicitly tell which certificate authority may issue digital certificates for their domain. Only 4 of the large DNS operators that dominate the Internet’s DNS infrastructure enabled their customers to configure CAA records, but things are getting better after this audit.
https://caastudy.github.io/

Lenovo engineers have discovered a backdoor affecting RackSwitch and BladeCenter switches running ENOS (Enterprise Network Operating System). The company already released firmware updates.
The backdoor was added to the source code in 2004 when it was maintained by Nortel.
https://www.bleepingcomputer.com/news/security/lenovo-discovers-and-removes-backdoor-in-networking-switches/

Nice technical report about PowerStager, Python / C / PowerShell malware used in the Pyeongchang Olympic themed spear phishing attack.
https://researchcenter.paloaltonetworks.com/2018/01/unit42-powerstager-analysis/