Tag: apt

Introduction DLL Sideloading (T1574.002) stands as a remarkably effective stratagem employed by adversaries to execute their own malicious code, while clandestinely leveraging the implicit trust placed in legitimate applications. This report dissects the multifaceted nuances of DLL Sideloading, delving into its mechanics, the prevalence of victim applications, and its reverberating impact on the cybersecurity landscape. […]

Introduction  Tracking threat actors in the long run is a fundamental part of the cyber threat intelligence program we run at Yoroi, few years ago we began monitoring a particular actor who started offensive operations even in the Italian landscape: Aggah (TH-157), who launched malicious campaign such as the  Roma225 and the RG ones against the Italian manufacturing vertical. At that time, even UNIT42 was closely monitoring that actor, unveiling a large scale operation threatening also United States, Europe and Asia.  The recent operation we tracked was designed […]

Introduction The news of the hack of one of the major strategic Italian companies circulated in the first half of December 2020 shocked a huge part of the national security community: Leonardo SpA (formerly Finmeccanica) runs critical services and projects directly related to the Italian defense industry and military corps.  On 5th December 2020, the […]

Introduction 2020 was a really intense year in terms of APT activities, in fact it brought us new evidence of sophisticated campaigns targeting Enterprises organization across Europe and also Italy. In particular the threat group we track as TH-239, also mentioned as UNC1945 by FireEye security researchers, has been one of the sneakiest.  We discussed […]

Introduction The modern cyber threat landscape hides nasty surprises for companies, especially for the most structured and complex companies. Many times, threat actors develop very dangerous and effective techniques using tools and technologies in a smart, unattended way.  This is the case of a particular cyber criminal group operating cyber intrusion against one of the […]

Proto: N060420. Con la presente Yoroi desidera informarla riguardo ad una vulnerabilità 0-day estremamente grave all’interno dei sistemi operativi mobile iOS di Apple, sistema operativo alla base dei celebri iPhone. La problematica nasce da lacune nella gestione della memoria all’interno delle librerie di sistema per i contenuti MIME (Multipurpose Internet Mail Extensions), attraverso le quali un […]

Introduction Recently we have observed a significant increase in state-sponsored operations carried out by threat actors worldwide. APT34, Gamaredon, and Transparent Tribe are a few samples of the recently uncovered campaigns, the latter was spotted after four years of apparent inactivity. Cybaze-Yoroi ZLab decided to study in depth a recent threat attributed to a North Korean APT dubbed Kimsuky. […]

Introduction In November 2018, researchers from Cisco Talos tracked and detailed a “DNSEspionage” campaign against targets in Lebanon and UAE. At the time of the report, the threat actor carried out a cyber espionage campaign by redirecting DNS traffic from domains owned by the Lebanon government to target entities in the country. In April 2019, Cisco Talos discovered […]

Introduction Operation Transparent Tribe was first spotted by Proofpoint Researchers in Feb 2016, in a series of espionages operations against Indian diplomats and military personnel in some embassies in Saudi Arabia and Kazakhstan. At that time, the researchers tracked the sources IP in Pakistan, the attacks were part of a wider operation that relies on multi vector such […]

Introduction  Gamaredon Group is a Cyber Espionage persistent operation attributed to Russians FSB (Federal Security Service) in a long-term military and geo-political confrontation against the Ukrainian government and more in general against the Ukrainian military power.  Gamaredon has been active since 2014, and during this time, the modus operandi has remained almost the same. The […]

Introduction During our threat monitoring activities, we discovered an interesting drop chain related to the well-known Aggah campaign, the ambiguous infection chain observed by Unit42 which seemed to deliver payloads potentially associated with the Gorgon Group APT. After that, we discovered other malicious activities using the same TTPs and infrastructures, for instance in “The Enigmatic […]

Introduction In the past days, an infamous cyber attack targeted an high profile target on the APAC area: the Australian Parliament House. As reported by the Australian prime minister there was no evidence of any information theft and the attack has been promptly isolated and contained by the Australian Cyber Security Centre (ACSC), however the […]