Tag Archives: Traffic

Identifying harmful activity on your captured traffic

This Python script utilises Wireshark or TCPdump to analyse network traffic stored in a specified .pcap or .pcapng file. The objective is to detect potential malicious activities and attacks. The script covers a range of suspicious network behaviors, including: DNS Tunneling SSH Tunneling TCP Session Hijacking SMB Attack SMTP or …

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Sophisticated Spearphishing Campaign Targets Government Organizations, IGOs, and NGOs

Sophisticated Spearphishing Campaign Targets Government Organizations, IGOs, and NGOs

This Joint Cybersecurity Advisory uses the MITRE Adversarial Tactics, Techniques, and Common Knowledge (ATT&CK®) framework, Version 9. See the ATT&CK for Enterprise for all referenced threat actor tactics and techniques. The Cybersecurity and Infrastructure Security Agency (CISA) and the Federal Bureau of Investigation (FBI) are engaged in addressing a spearphishing …

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Change IP address in packet capture file (faking IP)

hexdump - blackMOREOps - 2

I'm sure you bumped into situations where you needed to fake IP address in a capture file. This maybe required when you're trying to send the capture file to someone that you don't really share your real IP's with or you just want to change cause you can. If you've tried this and looked around the interwebs, you'd surely know that there's not many guides available and most people would just tell casually "just use sed" or use "WireEdit" and pay some fees for their license. Now, both works but I just got pissed off in a particular situation where sed wasn't an options (the file was literally few GB's in size and most text editors would just freeze) and to make things worse, I needed to filter a lot of info and only keep source and destination IP addresses in there for privacy's sake. Yeah, that means removing all those noises like DNS, UDP, Broadcast, Cisco ARP, Broadcast, MDNS (yes, that too), SSDP ... yes, pretty much anything except TCP/UDP, HTTP and TLS trarffic between my server and the destination server. So, in summary I had to filter all of these noises and change IP address in packet capture file to hide source IP address, this is similar to faking IP address in packet captures. You can also use other tools to do it on the fly but they require more setup and all I just wanted to do is to hide my source IP.

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Brute Force Attacks Conducted by Cyber Actors

Advanced Persistent Threat Activity Exploiting Managed Service Providers

In a traditional brute-force attack, a malicious actor attempts to gain unauthorized access to a single account by guessing the password. This can quickly result in a targeted account getting locked-out, as commonly used account-lockout policies allow three to five bad attempts during a set period of time. During a …

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