Found 106 bookmarks
Custom sorting
Malvertising Used as Entry Vector for BlackCat Actors Also Leverage SpyBoy Terminator
Malvertising Used as Entry Vector for BlackCat Actors Also Leverage SpyBoy Terminator
We found that malicious actors used malvertising to distribute malware via cloned webpages of legitimate organizations. The distribution involved a webpage of the well-known application WinSCP, an open-source Windows application for file transfer. We were able to identify that this activity led to a BlackCat (aka ALPHV) infection, and actors also used SpyBoy, a terminator that tampers with protection provided by agents.
·trendmicro.com·
Malvertising Used as Entry Vector for BlackCat Actors Also Leverage SpyBoy Terminator
Malware Execution Method Using DNS TXT Record
Malware Execution Method Using DNS TXT Record
AhnLab Security Emergency response Center (ASEC) has confirmed instances where DNS TXT records were being utilized during the execution process of malware. This is considered meaningful from various perspectives, including analysis and detection as this method has not been widely utilized as a means of executing malware.
·asec.ahnlab.com·
Malware Execution Method Using DNS TXT Record
Fragments of Cross-Platform Backdoor Hint at Larger Mac OS Attack
Fragments of Cross-Platform Backdoor Hint at Larger Mac OS Attack
During routine detection maintenance, our Mac researchers stumbled upon a small set of files with backdoor capabilities that seem to form part of a more complex malware toolkit. The following analysis is incomplete, as we are trying to identify the puzzle pieces that are still missing.
·bitdefender.com·
Fragments of Cross-Platform Backdoor Hint at Larger Mac OS Attack
Shc Linux Malware Installing CoinMiner
Shc Linux Malware Installing CoinMiner
The ASEC analysis team recently discovered that a Linux malware developed with Shc has been installing a CoinMiner. It is presumed that after successful authentication through a dictionary attack on inadequately managed Linux SSH servers, various malware were installed on the target system. Among those installed were the Shc downloader, XMRig CoinMiner installed through the former, and DDoS IRC Bot, developed with Perl.
·asec.ahnlab.com·
Shc Linux Malware Installing CoinMiner
Unpacking RDStealer: An Exfiltration Malware Targeting RDP Workloads
Unpacking RDStealer: An Exfiltration Malware Targeting RDP Workloads
In June 2023, Bitdefender Labs published a research paper about espionage operation in East Asia. This operation was ongoing since at least the beginning of 2022, showing a high level of sophistication typically associated with state-sponsored groups. Despite trying various methods, we have been unable to attribute these attacks to a specific threat actor, but the target aligns with the interest of China-based threat actors.
·bitdefender.com·
Unpacking RDStealer: An Exfiltration Malware Targeting RDP Workloads
COSMICENERGY: New OT Malware Possibly Related To Russian Emergency Response Exercises | Mandiant
COSMICENERGY: New OT Malware Possibly Related To Russian Emergency Response Exercises | Mandiant
Mandiant identified novel operational technology (OT) / industrial control system (ICS)-oriented malware, which we track as COSMICENERGY, uploaded to a public malware scanning utility in December 2021 by a submitter in Russia. The malware is designed to cause electric power disruption by interacting with IEC 60870-5-104 (IEC-104) devices, such as remote terminal units (RTUs), that are commonly leveraged in electric transmission and distribution operations in Europe, the Middle East, and Asia.
·mandiant.com·
COSMICENERGY: New OT Malware Possibly Related To Russian Emergency Response Exercises | Mandiant
Lemon Group’s Cybercriminal Businesses Built on Preinfected Devices
Lemon Group’s Cybercriminal Businesses Built on Preinfected Devices
An overview of the Lemon Group’s use of preinfected mobile devices, and how this scheme is potentially being developed and expanded to other internet of things (IoT) devices. This research was presented in full at the Black Hat Asia 2023 Conference in Singapore in May 2023.
·trendmicro.com·
Lemon Group’s Cybercriminal Businesses Built on Preinfected Devices
Justice Department Announces Court-Authorized Disruption of the Snake Malware Network Controlled by Russia's Federal Security Service
Justice Department Announces Court-Authorized Disruption of the Snake Malware Network Controlled by Russia's Federal Security Service
“Russia used sophisticated malware to steal sensitive information from our allies, laundering it through a network of infected computers in the United States in a cynical attempt to conceal their crimes.  Meeting the challenge of cyberespionage requires creativity and a willingness to use all lawful means to protect our nation and our allies,” stated United States Attorney Peace.  “The court-authorized remote search and remediation announced today demonstrates my Office and our partners’ commitment to using all of the tools at our disposal to protect the American people.”
·justice.gov·
Justice Department Announces Court-Authorized Disruption of the Snake Malware Network Controlled by Russia's Federal Security Service
Hunting Russian Intelligence “Snake” Malware
Hunting Russian Intelligence “Snake” Malware
The Snake implant is considered the most sophisticated cyber espionage tool designed and used by Center 16 of Russia’s Federal Security Service (FSB) for long-term intelligence collection on sensitive targets. To conduct operations using this tool, the FSB created a covert peer-to-peer (P2P) network of numerous Snake-infected computers worldwide. Many systems in this P2P network serve as relay nodes which route disguised operational traffic to and from Snake implants on the FSB’s ultimate targets. Snake’s custom communications protocols employ encryption and fragmentation for confidentiality and are designed to hamper detection and collection efforts.
·cisa.gov·
Hunting Russian Intelligence “Snake” Malware
The (Not so) Secret War on Discord
The (Not so) Secret War on Discord
CyberArk Labs discovered a new malware called Vare that is distributed over the popular chatting service, Discord. Vare has been used to target new malware operators by using social engineering tactics on them. Additionally, we have found that Vare uses Discord’s infrastructure as a backbone for its operations. This malware is linked to a new group called “Kurdistan 4455” based out of southern Turkey and is still early in its forming stage.
·cyberark.com·
The (Not so) Secret War on Discord