From infostealer development to data exfiltration, cloud service providers are increasingly being abused by threat actors for malicious schemes. While in this case the ransomware samples we examined contained hard coded AWS credentials, this is specific to this single threat actor and in general, ransomware developers leverage other online services as part of their tactics.
In line with this, Trend Micro examined ransomware samples written in Go language (aka Golang), targeting Windows and MacOS environments. Most of the samples contained hard-coded AWS credentials, and the stolen data were uploaded to an Amazon S3 bucket controlled by the threat actor.
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Source: Trend Micro
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