Kaspersky finds evidence of continued Russian hacking campaigns in Ukraine

APT group Armageddon was identified as acting against Ukraine late last year, and Symantec’s own data backs up that presented by The Security Service of Ukraine.

Security researchers at Symantec have presented what they said is further evidence that the Russian advanced persistent threat hacking team known as Shuckworm has been actively waging a cyber espionage campaign against organizations in Ukraine.

According to a report from The Security Service of Ukraine released in November 2021, Shuckworm, also known by Armageddon, Gamaredon, Primitive Bear and other monikers, is relatively new to the APT world. The SSU believes Shuckworm was founded in 2013 or 2014 and initially operated with a very low profile. Despite its relative newness to the scene, the SSU said “the group is able to turn into a cyberthreat with consequences, the scale of which will exceed the negative effect of the activities of [known Russian APTs APT28, SNAKE and APT29].”

Symantec said its findings are consistent with the SSU’s report, which said Shuckworm has become more sophisticated since 2017, the end result of which is a group with custom-built malware to infiltrate and legitimate tools to keep itself connected.

Anatomy of a cyber espionage attack

There are a variety of methods that APTs use to establish a permanent presence in victim networks. In the particular case study Symantec included in its report, Shuckworm likely used a tried-and-true ingress method: Phishing.

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The attack began July 14, 2021, and continued for over a month, Symantec said, and it all began with a malicious Word document. “Just five minutes after the document is opened, a suspicious command is also executed to launch a malicious VBS file,” Symantec said. That file, in turn, installed the Pterodo backdoor software that was previously linked to Shuckworm.

The creation of Pterodo is what the SSU said divides Shuckworm’s early days from its more dangerous later years. Prior to the creation of Pterodo, Shuckworm relied on legitimate remote access tools like RMS and UltraVNC. Now, through the…