Thought leadership. threat analysis, news and alerts.
Malicious Email Campaigns Geo-Targets Canadian Organizations, Report Says
Canadian organizations are increasingly becoming the targets of cyber-attackers as shown in the recent discovery of nearly 100 malicious email campaigns specifically targeting organizations based in Canada.
In the report "Beyond 'North America' - Threat actors target Canada specifically" researchers at Proofpoint reported that between the period of January 1, 2019 to May 1, 2019, threat actors conducted nearly 100 malicious email campaigns specifically targeting Canadian organizations or were customized for Canadian audiences.
Malicious Email Campaigns
Malicious email campaign, also known as phishing scam, is a type of cyber-attack that uses emails as a weapon. Phishing emails contain malicious attachments or malicious links.
Downloading this malicious attachment or clicking this malicious link could lead to compromise. Victims are tricked into opening the malicious email and downloading this malicious attachment or clicking this malicious link as threat actors use branding familiar to the recipients.
In the recent malicious email campaigns detected by Proofpoint researchers, the top affected organizations in Canada include financial services, energy/utilities, manufacturing, healthcare and technology. The researchers also observed that some of the malicious emails sent were customized for the French-speaking recipients in Canada.
In the nearly 100 malicious email campaigns specifically targeting Canadian organizations, Proofpoint researchers also observed that the threat actors tricked the victims into opening the malicious email or downloading the malicious attachment or clicking the malicious link by stealing the branding of several notable Canadian companies and agencies including national banks, major shipping and logistics organizations and government agencies.
“Emotet in particular, with its frequent region-specific email campaigns, is bringing new attention to geo-targeting in Canada …,” Proofpoint researchers said.
The first version of the malicious software (malware) Emotet, which was first observed in 2014 targeting German and Austrian victims, functioned as a banking trojan – a type of malware designed to steal financial data.
Since then, Emotet has evolved into a powerful malware, with its ability to continuously evolve and update its capabilities for various online criminal activities from information stealing to distributed denial-of-service (DDoS) attacks. In recent years, instead of delivering its own banking trojan, Emotet has delivered third-party banking trojans such as Qbot, The Trick, IcedID and Gootkit.
In 2018, the United States Computer Emergency Readiness Team (US-CERT)issued an alert, warning about the dangers of Emotet. "Emotet continues to be among the most costly and destructive malware affecting state, local, tribal, and territorial (SLTT) governments, and the private and public sectors,” US-CERT said. “Emotet infections have cost SLTT governments up to $1 million per incident to remediate.”
One of the reasons why Emotet continues to be among the most costly and destructive malware is its worm-like capability, that is, the ability to spread from computer to computer without any human action.
Emotet has been known to spread from computer to computer without any human interaction by accessing Server Message Block (SMB), an internet standard protocol that Windows uses to share files, printers and serial ports. “Emotet’s access to SMB can result in the infection of entire domains (servers and clients),” US-CERT said.
Emotet is also capable of spreading its own phishing email without human interaction through the use of Outlook scraper, a tool that’s used to scrape names and email addresses from the victim’s Outlook accounts and uses this names and email addresses to send out additional phishing emails from the compromised accounts.
According to Proofpoint researchers, the threat actor called “TA542” is the primary actor behind Emotet. Proofpoint researchers said that this threat actor is known to use the latest version of Emotet and develops malicious emails specific to given regions in the world.
"TA542 typically distributes high volume email campaigns consisting of hundreds of thousands or even millions of messages targeting all industries,” Proofpoint researchers said. “TA542 is currently one of the most prolific actors in the entire threat landscape. With TA542’s international reach and high volume campaign strategy, we expect Emotet use to continue to grow in the upcoming quarters.”
Even as Emotet has evolved in terms of capabilities, one thing remains constant with this malware: delivery is always via malicious email. As the delivery is always via malicious email, it’s important to protect your organization’s email system from this threat through the following mitigating measures:
Here are additional cyber-security measures in order to block or mitigate the effects of Emotet:
Timely identification and mitigation of IT risks can save your business from suffering costly consequences. Call us todayand we will show you how to better protectyour staff and your sensitive information against targeted attacks.
Cyber Espionage Group Targets Critical Infrastructure Using Old Hacking Tactics
Cyberattacks against critical infrastructure – energy, nuclear, water, aviation and critical manufacturing sectors – in the US have been going on since May 2017, the US Computer Emergency Readiness Team (US-CERT) said in a rare technical alert notice.
Symantec, on the other hand, reported that cyberattacks against the energy infrastructure in some European countries and in the US have been underway since December 2015. Cisco researchers, meanwhile, reported that since at least May 2017, they have observed attackers targeting critical infrastructure and energy companies around the world, in particular, Europe and the US.
While US-CERT and Cisco didn’t name a particular group responsible for the ongoing cyberattacks against critical infrastructure, Symantec identifies the threat actors collectively known as “Dragonfly” as the group behind the cyberattacks against the energy sector. Symantec researchers said the group has been in operation since at least 2011.
Symantec dubbed Dragonfly’s latest campaign against the energy sector as “Dragonfly 2.0”, a campaign that started in late 2015 the most notable cyberattack of which was the attack against Ukraine’s power system in 2015 and 2016, resulting in power outages affecting hundreds of thousands of residents.
The US-CERT technical alert – the result of analytic efforts between the Department of Homeland Security (DHS) and the Federal Bureau of Investigation (FBI), and the reports from Symantec and Cisco showed that old hacking tactics have been employed by the threat group.
Methods of Cyber Attacks
1. Malicious Emails
According to US-CERT, the threat group used malicious emails or phishing emails with the subject line such as “AGREEMENT & Confidential”. The group also used malicious Microsoft Word attachments that appear to be legitimate invitations, policy documents or curricula vitae for industrial control systems personnel to lure users to open the attachment, US-CERT said.
According to Symantec, one example of the malicious email campaign used by the threat group were emails disguised as an invitation to a New Year’s Eve party to targets in the energy sector in December 2015.
Cisco researchers identified an email-based attack called "Phishery", targeting the energy sector, including nuclear power. Phishery became publicly available on GitHub in late 2016
“Typically, malicious Word documents that are sent as attachments to phishing emails will themselves contain a script or macro that executes malicious code,” Cisco researchers said. “In this case, there is no malicious code in the attachment itself. The attachment instead tries to download a template file over an SMB connection so that the user's credentials can be silently harvested. In addition, this template file could also potentially be used to download other malicious payloads to the victim's computer.”
2. Watering Holes
According to US-CERT and Symantec, the cyber espionage group used "watering holes" – websites that have legitimate content by reputable organizations but are altered by the threat group to have malicious content. Almost half of the known watering holes, the US Computer Emergency Readiness Team said, are reputable websites that offer information to those in the critical infrastructure sector.
“As well as sending malicious emails, the attackers also used watering hole attacks to harvest network credentials, by compromising websites that were likely to be visited by those involved in the energy sector,” Symantec said.
3. Social Engineering
These stolen network credentials, according to Symantec, were then used for follow-up attacks on the target critical infrastructure organization itself by delivering trojanized software – malicious software that’s disguised as legitimate software.
One of the trojans used by Dragonfly group is Karagany.B – malicious software that infiltrates computer systems of target organizations by masquerading as Flash updates. The group here used the old hacking tactic of social engineering – convincing victims they need to download software, in this case, an update for their Flash player.
The trojan Karagany.B enables attackers remote access to the victims’ computer systems and allows them to install additional malicious tools if needed. Another trojan used by the group, according to Symantec, is the trojan Heriplor – malicious software that also enables attackers remote access to the victims’ computer systems.
“Trojan.Heriplor is a backdoor that appears to be exclusively used by Dragonfly, and is one of the strongest indications that the group that targeted the western energy sector between 2011 and 2014 is the same group that is behind the more recent attacks,” Symantec said. “This custom malware is not available on the black market, and has not been observed being used by any other known attack groups.”
Symantec noted that Dragonfly’s origins cannot definitively be determined. While some of Dragonfly’s malware codes were written in Russian and French, Symantec noted, this could be a way to mislead people.
How to Prevent Dragonfly Attacks
To prevent Dragonfly attacks, the US-CERT recommends the following:
Steve E. Driz