Discover and read the best of Twitter Threads about #ScarCruft
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#ESETesearch discovered Dolphin, a sophisticated backdoor extending the arsenal of the #ScarCruft APT group. Dolphin has a wide range of spying capabilities and is deployed on selected targets only.
welivesecurity.com/2022/11/30/who… 1/6
welivesecurity.com/2022/11/30/who… 1/6
The backdoor was used as the final payload of a multistage attack in early 2021, involving a watering-hole attack on a South Korean online newspaper, an Internet Explorer exploit, and another ScarCruft backdoor, named BLUELIGHT, previously reported by Volexity and Kaspersky. 2/6 
While BLUELIGHT performs basic reconnaissance, Dolphin actively searches the drives of compromised systems for files of interest and exfiltrates them to Google Drive. Its other capabilities include keylogging, taking screenshots and stealing credentials from browsers. 3/6
In July, #ESETresearch reported on macOS spyware we dubbed CloudMensis. In the blogpost, we left the malware unattributed. However, further analysis showed similarities with a Windows malware called #RokRAT, a #ScarCruft tool. @marc_etienne_, @pkalnai 1/9
The Windows and macOS malware variants are not copycats of each other, but share the following similarities: ➡️ 2/9
1️⃣ Both variants are spyware with functionality such as keylogging and taking screenshots. Each supported command is identified by a number. Its value is in a similar range for both: macOS has 39 commands ranging from 49 to 93, while Windows has 42, ranging from 48 to 90. 3/9
