Eswatini Government’s gov.sz website is running a cryptojacker

The Government of Eswatini’s website, www.gov.sz, is running a
cryptojacker. Cryptojackers
use website visitors’ CPU power to mine cryptocurrency, most often without their knowledge or permission.
Data from archive.org suggests the JavaScript snippet was added to the site’s HTML source between
28th September and
6th October.

Image of a cryptojacker injection on the Eswatini Government website.

WebMinePool cryptojacker injection on www.gov[.]sz.

While sites that are kept open for long periods of time are often the most lucrative – the longer
the victim’s browser tab is open, the more cryptocurrency can be mined — criminals are typically
not fussy when deploying cryptojackers. Criminals can target large swathes of sites at once, including
those using vulnerable or out-of-date software, compromised third-party JavaScript, or with easily guessable
administrator credentials.

The cryptojacker on www.gov.sz is using the WebMinePool pooling service with the
identification key SK_zn6mjzLqJtqExdND4BJr8. A pooling service allows multiple miners
to work together to solve computational puzzles to have a greater chance of solving them.
Any reward for solving the puzzle is then split amongst the participants. Not all use of web-based
cryptocurrency miners is illicit — UNICEF Australia was using
Coinhive, a pool that shut down in
2018, for their Hope Page
project after gaining user consent.

Eswatini’s official website is not the only government site compromised. Netcraft has detected
cryptojacking and other malicious infections on plenty of other sites on government second-level domains
including those of Mexico, Brazil, and Indonesia.

Image of a web injection on the Guam Government's website.

A web injection on Guam’s gec.guam[.]gov site.

A script from the driverfortnigtly[.]ga domain is currently referenced on the Guam Election Commission’s website.
The domain is now defunct and was previously used for
redirecting visitors to other sites.

Netcraft provides anti-cybercrime services to seven governments. To protect domestic internet users we
regularly scan and detect web servers that have been compromised and infected with malicious content.

Netcraft’s browser extension and
mobile apps defend against non-consensual cryptojackers
alongside other JavaScript-borne threats, phishing/malware, fake shops, and other types of cybercrime.