A malicious threat actor continued to target the U.S. utilities sector with LookBack malware last August, launching a new phishing campaign that targeted organizations with emails impersonating a certification test administrator.

Discovered earlier this year by researchers at Proofpoint, LookBack includes a proxy mechanism and a remote access trojan module. In July, the attackers behind LookBack tried to spread it to utility companies via phishing emails that attempted to trick recipients into thinking they failed a professional license exam for engineers and surveyors.

Like that earlier scheme, the August phishing campaign attempted to infect victims via Microsoft Word documents containing obfuscated VBA macros. In this latest case, the email message featured an invitation to take the Energy Research and Intelligence Institution's Global Energy Certification exam. The fraudulent email borrowed the legit GEC logo and was sent from a spoofed domain that looked similar to the real domain, except that it used the wrong top-level domain.

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