CERBER Ransomware Hidden C2 Servers Traffic and Malware Analysis

Cerber ransomware has been one of the most prolific crimeware botnets to have arisen, it is currently generating an estimated $2.5 million dollars a year and rising. Once infected, your content is encrypted and held for ransom as the name implies. You will see an image popup with instructions on how to reclaim your data… Read More »

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Malspam E-mail Leads to Ransomware Cerber/Zerber Infection TRAFFIC SAMPLE

  Example of files that were encrypted and protected:   The domain name ftoxmpdipwobp4qy.joa688.top was NX and not required for the purchase process. 2016-12-16 01:29:05.256362 IP 192.168.1.102.50104 > 72.167.232.152.80: Flags [P.], seq 0:303, ack 1, win 256, length 303: HTTP: GET //up1/1/4fv3b5.exe HTTP/1.1 E..W..@……..fH……P.n……P…….GET //up1/1/4fv3b5.exe HTTP/1.1 Accept: application/x-shockwave-flash, image/gif, image/jpeg, image/pjpeg, */* Accept-Language: en-us User-Agent: Mozilla/4.0… Read More »

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Mirai Internet of Things IoT DDoS sets record 600+ GB/Sec and your refrigerator could have been one of the attackers!

What is the Internet of Things (IoT) ? In today’s technological expansion everything seems to be connected to the Internet, for instance in my own home I have my refrigerator, thermostat, video cameras, tablets, cell phone, TV, xbox, DirecTV box, printer, security system, laptops, servers, workstations, Ethernet tap, a switch and a router all connected… Read More »

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Similarities and Differences in the terms Phishing, Malvertising, Spam and Malware E-mails

What is Phishing? What are malvertising, spam e-mail and malware e-mail campaigns?  These terms have started to become intertwined and used interchangeably which generally means that there is a lack of understanding in the IT community which is typical. Over time laziness and improper training has a way of bending security definitions into bundles. A great example… Read More »

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Writing Shellcode for Buffer Overflows – Avoiding Bad Characters

Depending on the application, vulnerability type, and protocols in use, there may be certain characters that are considered “bad” and should not be used in your buffer, return address, or shellcode. One example of a common bad character (especially in buffer overflows caused by unchecked string copy operations) is the null byte (0x00). This character is considered bad because… Read More »

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