- Apr 24, 2016
- 7,260
Analyzing Solorigate, the compromised DLL file that started a sophisticated cyberattack, and how Microsoft Defender helps protect customers | Microsoft Security Blog
We, along with the security industry and our partners, continue to investigate the extent of the Solorigate attack. While investigations are underway, we want to provide the defender community with intel to understand the scope and impact, remediation guidance, and detections and protections we...www.microsoft.com
Additional malware discovered
In an interesting turn of events, the investigation of the whole SolarWinds compromise led to the discovery of an additional malware that also affects the SolarWinds Orion product but has been determined to be likely unrelated to this compromise and used by a different threat actor. The malware consists of a small persistence backdoor in the form of a DLL file named App_Web_logoimagehandler.ashx.b6031896.dll, which is programmed to allow remote code execution through SolarWinds web application server when installed in the folder “inetpub\SolarWinds\bin\”. Unlike Solorigate, this malicious DLL does not have a digital signature, which suggests that this may be unrelated to the supply chain compromise.
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