Examining Malware Redirects with NetworkMiner Professional

This network forensics video tutorial covers analysis of a malware redirect chain, where a PC is infected through the RIG Exploit Kit. A PCAP file, from Brad Duncan's malware-traffic-analysis.net website, is opened in NetworkMiner Professional in order to follow a redirect chain via a couple of hacked websites before delivering malware to the PC.

Resources
https://www.malware-traffic-analysis.net/2014/11/16/index.html
Meadgive on VirusTotal
CVE-2014-0569 Flash Exploit on VirusTotal
CVE-2012-0507 Java Exploit on VirusTotal
NetworkMiner Professional

IOCs
www.ciniholland.nl
24corp-shop.com
stand.trustandprobaterealty.com
793b698a82d999f1eb75525d050ebe16
f8482f5c4632fe237d062451b42393498a8d628ed9dee27147251f484e837a42
7b3baa7d6bb3720f369219789e38d6ab
e2e33b802a0d939d07bd8291f23484c2f68ccc33dc0655eb4493e5d3aebc0747
1e34fdebbf655cebea78b45e43520ddf
178be0ed83a7a9020121dee1c305fd6ca3b74d15836835cfb1684da0b44190d3

Check out our series of network forensic video tutorials for more tips and tricks on how to analyze captured network traffic.

Posted by Erik Hjelmvik on Monday, 26 February 2018 11:19:00 (UTC/GMT)

Tags: #Netresec​ #Professional​ #NetworkMiner​ #malware_traffic​ #malware​ #NSM​ #PCAP​ #videotutorial​ #video​ #tutorial​

NetworkMiner 1.6 Released

We've released version 1.6 of NetworkMiner today!

The new features in NetworkMiner 1.6 include:

• Drag-and-Drop
  Reassembled files and images can be opened with external tools by drag-and-dropping items from NetworkMiner's Files or Images tabs onto your favorite editor or viewer.


• Email extraction
  Improved extraction of emails and attachments sent over SMTP.


• DNS analysis
  Failed DNS lookups that result in NXDOMAIN and SERVFAIL are displayed in the DNS tab along with the flags in the DNS response.


• Live sniffing
  Improved live sniffing performance.


• PCAP-over-IP
  Remote live sniffing enabled by bringing the PCAP-over-IP feature into the free open source version of NetworkMiner.

Identifying Malware DNS lookups

DNS traffic from the Kuluoz-Asprox botnet (PCAP file available via Contagio)

Note the NXDOMAIN responses and “No” in Alexa top 1 million column in the screenshot above; these domains are probably generated by a domain generation algorithm (DGA).

Live Sniffing with Pcap-over-IP

The PCAP-over-IP functionality enables live sniffing also on non-Windows machines, simply by running tcpdump (or dumpcap) and netcat like this:

# tcpdump -i eth0 -s0 -U -w - | nc localhost 57012

To receive the Pcap-over-IP stream in NetworkMiner, simply press Ctrl+R and select a TCP port.

For more information about this feature please see our previous blog post about the PCAP‑over‑IP feature.

NetworkMiner Professional

The professional version of NetworkMiner additionally contains the following improvements of the command line tool NetworkMinerCLI:

• Enabled reading of PCAP and PcapNG data from standard input (STDIN)
• Full support for PCAP-over-IP
• More detailed DNS logging in NetworkMinerCLI's CSV export of DNS responses

The ability to read PCAP data from STDIN with NetworkMinerCLI makes it really simple to do live extraction of emails and email attachments. Here's an example showing how to do live SMTP extraction in Linux:

# tcpdump -i eth0 -s0 -w - port 25 or 587 | mono NetworkMinerCLI.exe -r - -w /var/log/smtp_extraction/

The syntax for extracting emails and attachments in Windows is very similar:

C:\>dumpcap.exe -i 1 -f "port 25 or 587" -w - | NetworkMinerCLI.exe -r -

The TCP ports 25 and 587, which are used in the capture filter above, are the standard port numbers for SMTP. In order to do live extraction of files sent over HTTP, simply use “port 80” as capture filter instead. Likewise, X.509 certificates can also be extracted from HTTPS sessions simply by using “port 443” as capture filter.

Download NetworkMiner 1.6

The most recent release of the free (open source) version of NetworkMiner can be downloaded from SourceForge or our NetworkMiner product page. Paying customers can download an update for NetworkMiner Professional from our customer portal.

Credits

We would like to thank Dan Eriksson (FM CERT) and Lenny Hansson (Danish GovCERT) for submitting bug reports and feature requests.

Posted by Erik Hjelmvik on Monday, 16 June 2014 11:00:00 (UTC/GMT)

Tags: #Netresec​ #NetworkMiner​ #Professional​ #SMTP​ #Extract​ #DNS​ #PCAP-over-IP​