Incidents

Stuxnet and stolen certificates

Yesterday, our colleagues from ESET discovered a new version of Stuxnet, which has its driver signed by yet another trusted party – “JMicron Technology Corp.”.

JMicron is a rather well known hardware producer, I’ve myself owned about three or four different computers which had JMicron components inside.

The initial RT certificate was suspicious, but another stolen certificate raises interesting questions.

One possibility here is that both JMicron and Realtek got infected with a trojan such as Zeus, that steals digital certificates. Then, the cybercriminals who got the certificates, either re-sold them on the market or used them by themselves to sign the Stuxnet drivers.

To be honest, the fact that trojans were stealing digital certificates did not really seem that impressive when I have first seen this capability.

Now, coupled with the Stuxnet story, it begins to make sense.

Stuxnet and stolen certificates

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Reports

APT trends report Q3 2021

The APT trends reports are based on our threat intelligence research and provide a representative snapshot of what we have discussed in greater detail in our private APT reports. This is our latest installment, focusing on activities that we observed during Q3 2021.

Lyceum group reborn

According to older public researches, Lyceum conducted operations against organizations in the energy and telecommunications sectors across the Middle East. In 2021, we have been able to identify a new cluster of the group’s activity, focused on two entities in Tunisia.

GhostEmperor: From ProxyLogon to kernel mode

While investigating a recent rise of attacks against Exchange servers, we noticed a recurring cluster of activity that appeared in several distinct compromised networks. With a long-standing operation, high profile victims, advanced toolset and no affinity to a known threat actor, we decided to dub the cluster GhostEmperor.

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