Editor’s note: Following publication of this blog, it came to our attention that AhnLab encountered what appears to be an earlier version of SDBbot, described in their recent Q3 ASEC Report as a “malicious SDB file. AhnLab describes delivery of the malware in South Korean campaigns as a secondary payload to the FlawedAmmyy RAT. TA505 has been active in South Korea in 2019 and frequently distributes the FlawedAmmyy RAT, but we cannot verify the connection at this time