![]() &stereo=2 can be added to guests to turn off audio effects, such as echo cancellation and noise-reduction.VP8 is typically the default video codec, but using &codec=vp9 or &codec=h264 as a URL in OBS can help to reduce corrupted video puke issues.Setting higher bitrates will improve motion. OBS will see a guest's video in high-quality the default video bitrate is 2500kbps.If you transfer a guest from one room to another, they won't know which room they have been transferred to.You can use this control room to record isolated video or audio streams, but it is an experimental feature still.You can use the auto-mixing Group Scenes, the green links, to auto arrange multiple videos for you in OBS.These can be used within an OBS Browser Source. Links to Solo-views of each guest video are offered under videos as they load.The state of the scenes, such as which videos are active in a scene, are lost when the director resets the control-room or the scene.It will be high-quality within OBS still though. Videos will appear of low quality on purpose for guests and director this is to save bandwidth and CPU resources.Using &broadcast, &roombitrate=0 or &novideo are options there. To achieve more than around 7-guests though, you will likely want to disable video sharing between guests. A group room can handle up to around 30 guests, depending on numerous factors, including CPU and available bandwidth of all guests in the room.Share the blue link to invite guests who will join the chat automatically. You can host a group chat with friends using a room. This is the director's control-room for the group-chat. One particularly interesting detail was the fact that a large number of BIOPASS' features were implemented to target and steal the private data of popular web browsers and instant messengers typically used in mainland China, which would suggest this was an operation targeted at local Chinese entities, something that might get a state-sponsored actor like APT41 in hot water with their handlers.Welcome. However, while the clues were there, Trend Micro has not made any formal link just yet. ![]() This would fit into the group's modus operandi since APT41 has been known to engage in cyber-espionage operations during their regular work hours and then carry out financially motivated attacks against online gaming companies across Southeast Asia for personal profits. It is currently unclear who is behind this malware strain however, Trend Micro said it found several clues linking the BIOPASS malware to a group of Chinese state-sponsored hackers known as Winnti or APT41. ![]() Per Trend Micro, the attackers use OBS Studio's RTMP (Real-Time Messaging Protocol) streaming capabilities to record the user's screen and broadcast it to an attacker's control panel. ![]() Trend Microīut while BIOPASS looks like any other RAT, it also comes with a new feature not seen in any other malware strain-namely, it installs the OBS Studio software on victims' systems. It also has the ability to compromise the private information of its victims by stealing web browser and instant messaging client data. Those who installed the malicious Flash and Silverlight apps would install a legitimate version of the software, but also the BIOPASS RAT, which granted attackers full control over their systems.īIOPASS RAT possesses basic features found in other malware, such as file system assessment, remote desktop access, file exfiltration, and shell command execution. Named BIOPASS, this malware is a remote access trojan (RAT) coded in Python that was spotted in recent attacks targeting online gambling companies in China.ĭiscovered by security firm Trend Micro, the RAT has been disguised inside legitimate installers for Adobe Flash Player or Microsoft Silverlight, two technologies that are still being used in China, despite reaching EOL (end-of-life).Īccording to a report published last week, malicious JavaScript code planted by attackers on the tech/chat support pages of Chinese gambling-related sites redirected users to pages offering would-be victims tainted installers. Security researchers have uncovered a new malware strain that uses the popular OBS Studio live-streaming app to record and broadcast the screen of its victims to attackers. Malware abuses OBS live-streaming software to record victims' screens ![]()
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