We recently came across a cyber attack that used a remote access Trojan (RAT) called Lost Door, a tool currently offered on social media sites. What also struck us the most about this RAT (detected as BKDR_LODORAT.A) is how it abuses the Port Forward feature in routers. Using this feature enables remote systems to connect to a specific computer or service within a private local-area network (LAN). However, when used maliciously, this feature allows remote attackers to mask their activities in the network and avoid immediate detection. Because this RAT is easy to customize, even knowledge of the indicators of compromise (which may change as a result) may not be sufficient in thwarting the threat. Easily customizable RATs like Lost Door can be hard to detect and protect against, posing a challenge to IT administrators.Read More
When it comes to threat investigations, we often treat the malicious binary as the smoking gun or the crown jewel of the investigation. However, examining the other components can produce the bigger picture that will be far more detailed than simply focusing on the binary.
By looking beyond one malicious file, we were able to determine that a slew of seemingly unrelated phishing emails were in fact, part of a campaign targeting banks and financial institutions across the globe. The attackers used other banks’ email accounts to send the phishing emails to their targeted banks in order to gain access and remotely control their computers. We are calling this campaign “Cuckoo Miner.” The attackers’ method of taking over legitimate inboxes to prey on victims echoes the cuckoo’s distinct act of tricking other birds into raising its chick by taking over their nests.Read More
Earlier this week the US government announced the arrest of more than 100 individuals linked to the Blackshades remote access Trojan (RAT). While most of those arrested were merely users of this RAT, the arrests included its co-creator, a 24-year-old Swede named Alex Yücel. Also arrested was a 23-year-old American named Brendan Johnston, who was involved in…Read More
Out with the old, in with the new? When it comes to cybercrime, that’s rarely the case. We often seen old malware get upgrades with new techniques, payloads, and even targets. This is certainly the case for an old Java remote access Trojan (RAT) detected as JAVA_OZNEB.B. Users may encounter this threat as an attachment…Read More
Recently, a mass stabbing incident in Kunming, China left 29 victims dead. We came across an email which used this incident as social engineering bait. To appear legitimate, the message talks about the incident at length and cites several news outlets as its sources. It encourages the user to open the attached document for more information….Read More