The findings indicate the attackers breached SolarWinds networks as far back as September 2019, spending almost 5 months performing test code injections before first deploying SUNBURST in February 2020. SolarWinds published new findings from their ongoing investigation of their and their customers networks. SUNSPOT appears to have been deployed in SolarWinds internal development environments so that the attackers may inject SUNBURST into the vulnerable Orion components. Much like the previous spotted Teardrop implant, Raindrop appears to be used to deliver Cobalt Strike beacons for later use.ĬrowdStrike researchers have discovered a third implant, named SUNSPOT, in the SolarWinds compromise. SolarWinds researcher have discovered a fourth tool used in the Orion compromise called Raindrop. Raindrop Cobalt Strike dropper identified They then deploy these tools and extract system information, presumably to examine for flaws or errors in their tools. The group, known as SilverFish, has been observed dropping previously undetected exploits and malware onto systems. New reports are indicating that one the groups involved in the SolarWinds compromise are using compromised systems as a testing environment for new tools
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