Attackers have increasingly started using Telegram as a control server (C2). One example is the Lazy Koala group, which Positive Technologies researchers recently discovered and set out to study.
While researching bots on Telegram, Positive Technologies team found that many are from Indonesia. The researchers were struck by the huge numbers of messages and victims, and how new bots and chats seem to appear on Telegram by the day, so they decided to get to the bottom of this “Indonesian tsunami.” In doing so, Positive Technologies found a couple chat-related SMS stealers from Indonesia. The researchers named them SMS Webpro and NotifySmsStealer because of the string stealers in the body. Sporadic attacks against Bangladesh and India were also detected.
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Source: Positive Technologies
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