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New Threat Group Carrying Out Aggressive Ransomware ...


Tyler McLellan, principal threat analyst for advanced practices at Mandiant says the company is unsure about how many SonicWall VPN devices remain unpatched against CVE-2021-20016, a critical SQL injection vulnerability in SonicWall s Secure Mobile Access SMA 100 series remote access products. SonicWall issued a patch for the flaw, which is the one that UNC2447 is targeting, in February 2021.
While we don’t have numbers on unpatched devices, Mandiant is aware that UNC2447-related threat actors are still in possession of credentials stolen from over 100 VPN appliances, McLellan says. These affected organizations will remain at risk of ransomware attack even if patched, unless they enable multifactor authentication or reset all passwords. ....

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Threat Group Exploits SonicWall Flaw to Deploy FiveHands Ransomware


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Researchers observed a new ransomware variant, called FiveHands, being deployed by an “aggressive” financially motivated threat group in January and February.
According to a FireEye Mandiant report, the UNC2447 group exploited a critical SonicWall vulnerability (CVE-2021-20016) prior to a patch being available. The group leveraged this exploit as a foothold in order to deploy the previously-discovered SombRAT malware, as well as FiveHands.
“UNC2447 monetizes intrusions by extorting their victims first with FiveHands ransomware followed by aggressively applying pressure through threats of media attention and offering victim data for sale on hacker forums,” said researchers with FireEye Mandiant.
UNC2447 (“UNC” being FireEye’s designation for unclassified threat groups) was first discovered by researchers in November, when they observed the group using a PowerShell dropper in an attempt to install malware at two unnamed companies. In January, th ....

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