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| Src | Date (GMT) | Titre | Description | Tags | Stories | Notes |
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2022-09-08 08:39:42 | Lazarus and the tale of three RATs (lien direct) |  By Jung soo An, Asheer Malhotra and Vitor Ventura.Cisco Talos has been tracking a new campaign operated by the Lazarus APT group, attributed to North Korea by the United States government. This campaign involved the exploitation of vulnerabilities in VMWare Horizon to gain an initial foothold into targeted organizations.Targeted organizations include energy providers from around the world, including those headquartered in the United States, Canada and Japan. The campaign is meant to infiltrate organizations around the world for establishing long term access and subsequently exfiltrating data of interest to the adversary's nation-state.Talos has discovered the use of two known families of malware in these intrusions - VSingle and YamaBot.Talos has also discovered the use of a recently disclosed implant we're calling "MagicRAT" in this campaign. IntroductionCisco Talos observed North Korean state-sponsored APT Lazarus Group conducting malicious activity between February and July 2022. Lazarus has been previously attributed to the North Korean government by the U.S. Cybersecurity and Infrastructure Security Agency (CISA). The entry vectors involve the successful exploitation of vulnerabilities in VMWare products to establish initial footholds into enterprise networks, followed by the deployment of the group's custom malware implants, VSingle and YamaBot. In addition to these known malware families, we have also discovered the use of a previously unknown malware implant we're calling "MagicRAT."This campaign was previously partially disclosed by other security firms, but our findings reveal more details about the adversary's modus operandi. We have also observed an overlap of command and control (C2) and payload-hosting infrastructure between our findings and the U.S. Cybersecurity and Infrastructure Security Agency's (CISA) June advisory that detailed continued attempts from threat actors to compromise vulnerable VMWare Horizon servers.In this research, we illustrate Lazarus Group's post-exploitation tactics, techniques and procedures (TTPs) to establish a foothold, perform initial reconnaissance, deploy bespoke malware and move laterally across infected enterprises. We also provide details about the activities performed by the attackers when the VSingle backdoor is instrumented on the infected endpoints.In this campaign, Lazarus was primarily targeting energy companies in Canada, the U.S. and Japan. The main goal of these attacks was likely to establish long-term access into victim networks to conduct espionage operations in support of North Korean govern |
Malware Tool Vulnerability Threat Medical | APT 38 | |
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2022-09-07 08:01:43 | MagicRAT: Lazarus\' latest gateway into victim networks (lien direct) |  By Jung soo An, Asheer Malhotra and Vitor Ventura.Cisco Talos has discovered a new remote access trojan (RAT) we're calling "MagicRAT," developed and operated by the Lazarus APT group, which the U.S. government believes is a North Korean state-sponsored actor.Lazarus deployed MagicRAT after the successful exploitation of vulnerabilities in VMWare Horizon platforms.We've also found links between MagicRAT and another RAT known as "TigerRAT," disclosed and attributed to Lazarus by the Korean Internet & Security Agency (KISA) recently.TigerRAT has evolved over the past year to include new functionalities that we illustrate in this blog. Executive SummaryCisco Talos has discovered a new remote access trojan (RAT), which we are calling "MagicRAT," that we are attributing with moderate to high confidence to the Lazarus threat actor, a state-sponsored APT attributed to North Korea by the U.S. Cyber Security & Infrastructure Agency (CISA). This new RAT was found on victims that had been initially compromised through the exploitation of publicly exposed VMware Horizon platforms. While being a relatively simple RAT capability-wise, it was built with recourse to the Qt Framework, with the sole intent of making human analysis harder, and automated detection through machine learning and heuristics less likely.We have also found evidence to suggest that once MagicRAT is deployed on infected systems, it launches additional payloads such as custom-built port scanners. Additionally, we've found that MagicRAT's C2 infrastructure was also used to host newer variants of known Lazarus implants such as TigerRAT. The discovery of MagicRAT in the wild is an indication of Lazarus' motivations to rapidly build new, bespoke malware to use along with their previously known malware such as TigerRAT to target organizations worldwide.Actor profile |
Malware Threat Medical | APT 38 | ★★★ |
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2020-11-12 05:52:48 | CRAT wants to plunder your endpoints (lien direct) | By Asheer Malhotra.
Cisco Talos has observed a new version of a remote access trojan (RAT) family known as CRAT.Apart from the prebuilt RAT capabilities, the malware can download and deploy additional malicious plugins on the infected endpoint.One of the plugins is a ransomware known as "Hansom."CRAT has been attributed to the Lazarus APT Group in the past.The RAT consists of multiple obfuscation techniques to hide strings, API names, command and control (C2) URLs and instrumental functions,...
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Ransomware Malware | APT 38 |
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