APT (Targeted attacks)

During our research on the Winnti group we have managed to discovered quite a considerable amount of Winnti samples targeting different gaming companies. With the help ofUsing thisat sophisticatedcomplicated malicious program cybercriminals gained remote access to infected workstations and then carried out further they activityed manually.

In the course of our research we uncovered the activity of a hacking group which has Chinese origins. This group was named “Winnti”. According to our estimations, this group has been active for several years and specializes in cyberattacks against the online video game industry.

The favorite tool of the attackers has been malicious program we called “Winnti”. It has evolved since the first use, but we divide all variants into two generations: 1.x and 2.x. Our publication describes 1.0 variant of this tool.

Earlier today, the Laboratory of Cryptography and System Security (CrySyS Lab), together with the Hungarian National Security Authority (NFB), published details on a high profile targeted attack against Hungary. The details about the exact targets are not known and the incident remains classified.

Considering the high level classification of the attack, Kaspersky Lab’s Global Research & Analysis Team performed a detailed technical analysis of the campaign and related malware samples.

You can read our short FAQ below and you can download our technical analysis paper linked at the end of the blogpost.

Earlier today, reports of a number of cyberattacks against various South Korean targets hit the news.

We’ve come by other attacks which piggyback on the same high level exploit code, only this time the targets are different: Uyghur activists. Together with our partner at AlienVault Labs, we analyzed these new exploits.

Together with our partner CrySyS Lab, we’ve discovered two new, previously-unknown infection mechanisms for Miniduke. These new infection vectors rely on Java and IE vulnerabilities to infect the victim’s PC. While inspecting one of the C&C servers of Miniduke, we have found files that were not related to the C&C code, but seemed to be

New Adobe PDFs exploiting CVE-2013-0640 drop sophisticated malware known as “MiniDuke”.

In partnership with researchers at AlienVault Labs, we ve analysed a series of targeted attacks against Uyghur Mac OS X users which took place during the past months.

A detailed list of industry standard “Indicators of compromise” for Red October.

Based on the analysis of known cases, we identified two main ways through which Backdoor.Win32.Sputnik infects the victims

Most of the tasks are provided as one-time PE DLL libraries that are received from the server, executed in memory and then immediately discarded

The packer disrupts basic software breakpoints and some api hooking techniques, because it decrypts the original exe’s section contents onto heaps in-memory

Files with the extension “.bak” are treated differently. They are decrypted using a custom AMPRNG algorithm with a hardcoded key, then decompressed using LZMA

In the Device notification callback function, the module logs each connection and disconnection event. When a device is connected, it starts a new thread that manipulates this device