Summary
On August 25, 2022, Chile’s government computer systems were attacked by a previously unseen ransomware variant. CSIRT of Chile’s government published a report which contained some Indicators of Compromise (IoCs) and recommendations for prevention measures.
On October 3, 2022, Invima — The Colombia National Food and Drug Surveillance Institute — reported a cyberattack that led to a temporary shutdown of the organization’s web services.…
By Max Kersten · November 15, 2022
In early 2022, Ukrainian companies were struck by multiple destructive wipers, attacking various organizations across sectors. This raised questions about the usage and impact of “digital weapons” within the security community, even though wipers themselves weren’t new. The infamous Shamoon wiper dates back more than a decade ago.…
Broadcom Software, was able to link this activity to a group we track as Billbug due to the use in this campaign of tools previously attributed to this group. Billbug (aka Lotus Blossom, Thrip) is a long-established advanced persistent threat (APT) group that is believed to have been active since at least 2009.…
We looked into the campaigns deployed by a new subgroup of advanced persistent threat (APT) group APT41, Earth Longzhi. This entry breaks down the technical details of the campaigns in full as presented at HITCON PEACE 2022 in August.
In early 2022, we investigated an incident that compromised a company in Taiwan.…
We have observed multiple attacks targeting government organizations in Asia, all involving DLL sideloading – historically a favorite technique of China-based APT groups — as far back as 2013 and as recently as 2020. In this article, we look at the evidence that connects five of them, showing how threat actors base their attacks on well-known, effective techniques, adding complexity and variation over time.…
FormBook stealer is an infostealer trojan available as a malware-as-service. This malware is often used by attackers with low technical literacy and little programming knowledge. FormBook can be used to steal various information from infected machines.
Despite how easy it is to set up and use, the malware has advanced stealing and evasion functions including the ability to pull stored and recorded user input.…
In my latest analysis report, “Fake Hungarian Government Email Drops Warzone RAT”, I discussed a fake Hungarian government phishing email that drops the Warzone RAT. It does this using multiple intermittent .NET binaries that are increasingly obfuscated. While my report would be far too long if I attempted to describe all the reverse engineering techniques used during my analysis, but I still think they provide a great opportunity for learning.…
APT-36 (also known as Transparent Tribe) is an advanced persistent threat group attributed to Pakistan that primarily targets users working at Indian government organizations. Zscaler ThreatLabz has been closely monitoring the activities of this group throughout 2022. Our tracking efforts have yielded new intelligence about this APT group that has not previously been documented.…
Update 12.01.22: The FBI and the Cybersecurity and Infrastructure Security Agency (CISA) issued a joint advisory on Cuba ransomware, listing this BlackBerry blog as a resource. See Advisory.
SummaryThe threat actor known as RomCom is running a series of new attack campaigns that take advantage of the brand power of SolarWinds, KeePass, and PDF Technologies.…
BlackCat
Known for its unconventional methods and use of advanced extortion techniques, BlackCat has quickly risen to prominence in the cybercrime community. As this ransomware group forges its way to gain more clout, we examine its operations and discuss how organizations can shore up their defenses against it.…
FortiGuard Labs recently discovered an email pretending to come from the Hungarian government. It informs the user that their new credentials to a governmental portal are attached. The attachment, however, is a zipped executable that, upon execution, extracts the Warzone RAT to memory and runs it.…
Our blog entry provides a look at an attack involving the LV ransomware on a Jordan-based company from an intrusion analysis standpoint
OverviewThe Trend Micro research team recently analyzed an infection related to the LV ransomware group, a ransomware as a service (RaaS) operation that has been active since late 2020, and is reportedly based on REvil (aka Sodinokibi).…
Recently, Zscaler ThreatLabz discovered a new malware being used by the SideWinder APT threat group in campaigns targeting Pakistan: a backdoor we’ve called “WarHawk.” SideWinder APT, aka Rattlesnake or T-APT4, is a suspected Indian Threat Actor Group active since at least 2012, with a history of targeting government, military, and businesses throughout Asia, particularly Pakistan.…
Summary
Actions to take today to mitigate cyber threats from ransomware:
Install updates for operating systems, software, and firmware as soon as they are released. Require phishing-resistant MFA for as many services as possible. Train users to recognize and report phishing attempts.Note: This joint Cybersecurity Advisory (CSA) is part of an ongoing #StopRansomware effort to publish advisories for network defenders that detail various ransomware variants and ransomware threat actors.…
Update 12.06.22: Mustang Panda is targeting countries across Europe and Asia Pacific, utilizing geopolitical events to their advantage. Their attack chain remains consistent, with the continued use of archive files, shortcut files, malicious loaders, and the use of PlugX malware. The goal of this particular operation appears to be collecting sensitive information from European countries and states from Asia, which might be supporting Western countries.…
Earlier this year, we started hunting for possible new DeftTorero (aka Lebanese Cedar, Volatile Cedar) artifacts. This threat actor is believed to originate from the Middle East and was publicly disclosed to the cybersecurity community as early as 2015. Notably, no other intelligence was shared until 2021, which led us to speculate on a possible shift by the threat actor to more fileless/LOLBINS techniques, and the use of known/common offensive tools publicly available on the internet that allows them to blend in.…
NullMixer is a dropper leading to an infection chain of a wide variety of malware families. NullMixer spreads via malicious websites that can be found mainly via search engines. These websites are often related to crack, keygen and activators for downloading software illegally, and while they may pretend to be legitimate software, they actually contain a malware dropper.…
Editor’s Note: The following post is an excerpt of a full report. To read the entire analysis, click here to download the report as a PDF.
This report details multiple campaigns conducted by the likely Chinese state-sponsored threat activity group TA413. The activity was identified through a combination of large-scale automated network traffic analytics and expert analysis.…