In some of the recent Powload-related incidents we saw, we noticed significant changes to some of the attachments in the spam emails: the use of steganography and targeting of specific countries. Figure 2 shows the difference. For example, the samples we analyzed in early 2018 had more straightforward infection chains. These updates added another stage to the execution of malicious routines as a way to evade detection.
The Powload variants that use these techniques drop and execute the Ursnif and Bebloh data stealers. We did not see any notable differences in the payloads’ routines. The distribution tactics also resemble a spam campaign we uncovered last year, which delivered the same information stealers but distributed via the Cutwail botnet.
The post From Fileless Techniques to Using Steganography: Examining Powload’s Evolution appeared first on .
It’s not hard to understand why bot management is critical to maintaining business availability and customer satisfaction – but do you know how to properly deal with bots?
Increasing use of encryption has created new challenges for enterprise security managers. Ever more-sophisticated encryption such as Perfect Forward Secrecy (PFS) protects data and may even boost your Google ranking – but it also provides a haven for malicious code that may use encryption to bypass enterprise security controls.
Why nation-state attacks are everyone’s problem
With so much change all the time, how can executives best prepare their businesses to meet the security challenges of the coming years? CSO Australia, in conjunction with Mimecast, explored this question in an interactive Webinar that looks at how the threat landscape has evolved – and what we can expect in 2019 and beyond.
An interview with CSO's David Braue and Ian Yip, Chief Technology Officer, McAffee.