The Russian military hackers known as Sandworm, responsible for everything from blackouts in Ukraine to NotPetya, the most destructive malware in history, don't have a reputation for discretion. But a French security agency now warns that hackers with tools and techniques it links to Sandworm have stealthily hacked targets in that country by exploiting an IT monitoring tool called Centreon—and appear to have gotten away with it undetected for as long as three years.
On Monday, the French information security agency ANSSI published an advisory warning that hackers with links to Sandworm, a group within Russia's GRU military intelligence agency, had breached several French organizations. The agency describes those victims as "mostly" IT firms and particularly web hosting companies. Remarkably, ANSSI says the intrusion campaign dates back to late 2017 and continued until 2020. In those breaches, the hackers appear to have compromised servers running Centreon, sold by the firm of the same name based in Paris.
Though ANSSI says it hasn't been able to identify how those servers were hacked, it found on them two different pieces of malware: one publicly available backdoor called PAS, and another known as Exaramel, which Slovakian cybersecurity firm ESET has spotted Sandworm using in previous intrusions. While hacking groups do reuse each other's malware—sometimes intentionally to mislead investigators—the French agency also says it's seen overlap in command and control servers used in the Centreon hacking campaign and previous Sandworm hacking incidents.
Though it's far from clear what Sandworm's hackers might have intended in the ye ..
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