By John Fokker, Ernesto Fernández Provecho and Max Kersten · April 05, 2023
We would like to thank Steen Pedersen and Mo Cashman for their remediation advice.
On the 4th and the 5th of April, a law enforcement taskforce spanning agencies across 17 countries – including the FBI, Europol and the Dutch Police – have disrupted the infamous browser cookie market known as Genesis Market and approached hundreds of its users.…
[Update: Following additional analysis of shellcode used in ICONIC, in conjunction with other observations from the wider security community, Volexity now attributes the activity described in this post to the Lazarus threat actor. Specifically, in addition to other claims of similarity, the shellcode sequence {E8 00 00 00 00 59 49 89 C8 48 81 C1 58 06 00 00} appears to have been only used in the ICONIC loader and the APPLEJEUS malware, which is known to be linked to Lazarus.…
On a bi-weekly basis, FortiGuard Labs gathers data on ransomware variants of interest that have been gaining traction within our datasets and the OSINT community. The Ransomware Roundup report aims to provide readers with brief insights into the evolving ransomware landscape and the Fortinet solutions that protect against those variants.…
AhnLab Security Emergency response Center (ASEC) has shared an APT attack case that has recently used CHM (Compiled HTML Help File).
Malware Distributed Disguised as a Password File
CHM is a Help screen that is in an HTML format. Threat actors are able to input malicious scrip codes in HTMLs with the inclusion of CHM.…
Splunk is committed to using inclusive and unbiased language. This blog post might contain terminology that we no longer use. For more information on our updated terminology and our stance on biased language, please visit our blog post. We appreciate your understanding as we work towards making our community more inclusive for everyone.…
By Securonix Threat Research: D.Iuzvyk, T.Peck, O.Kolesnikov
Sept. 25, 2023, updated Sept. 27, 2023, updated Oct. 6, 2023
tldr:Securonix Threat Research recently discovered an attack campaign appearing to originate from the threat group UAC-0154 targeting victims using a Pilot-in-Command (PIC) Drone manual document lure to deliver malware.…
By Securonix Threat Labs, Threat Research: D. Iuzvyk, T. Peck, O. Kolesnikov
March 30, 2023, updated April 5, 2023, updated April 18, 2023
While today is the last day for US income tax submissions, the TACTICAL#OCTOPUS campaign continues to target US victims. New samples have once again emerged related to this ongoing threat. …
February 15, 2024 update – On January 20, 2024, the US government conducted a disruption operation against infrastructure used by a threat actor we track as Forest Blizzard (STRONTIUM), a Russian state-sponsored threat actor, as detailed here: https://www.justice.gov/opa/pr/justice-department-conducts-court-authorized-disruption-botnet-controlled-russian
December 4, 2023 update – Microsoft has identified a nation-state activity group tracked as Forest Blizzard (STRONTIUM), based in Russia, actively exploiting CVE-2023-23397 to provide secret, unauthorized access to email accounts within Exchange servers.…
Threat actors are notorious for trying to hide their code in various ways, from binary packers to obfuscators. On their own, these tools are not always malicious as they can also be be used by companies or individuals who wish to keep their work safe from piracy, but overall they tend to be largely abused.…
Research by Shilpesh Trivedi and Pratik Jeware
Uptycs has already identified three Windows-based malware families that use Telegram this year, including Titan Stealer, Parallax RAT, and HookSpoofer. Attackers are increasingly turning to it, particularly for stealer command and control (C2).
And now the Uptycs threat research team has discovered a macOS stealer that also controls its operations over Telegram.…
By Aleksandar Milenkoski, Juan Andres Guerrero-Saade, and Joey Chen, in collaboration with QGroup
Executive Summary In Q1 of 2023, SentinelLabs observed initial phases of attacks against telecommunication providers in the Middle East. We assess that this activity represents an evolution of tooling associated with Operation Soft Cell.…Cyber espionage threat actors continue to target technologies that do not support endpoint detection and response (EDR) solutions such as firewalls, IoT devices, hypervisors and VPN technologies (e.g. Fortinet, SonicWall, Pulse Secure, and others). Mandiant has investigated dozens of intrusions at defense industrial base (DIB), government, technology, and telecommunications organizations over the years where suspected China-nexus groups have exploited zero-day vulnerabilities and deployed custom malware to steal user credentials and maintain long-term access to the victim environments.…
Threat actors often compete for the same resources, and this couldn’t be further from the truth when it comes to website compromises. After all, if a vulnerability exists one can expect that it will be exploited more than once.
In the past, we have seen such occurrences with Magecart threat actors for example in the breach of the Umbro website.…
In November 20211 and February 2022,2 Microsoft announced that by default it would block Excel 4 and VBA macros in files that were downloaded from the internet. Following these changes, CrowdStrike Intelligence and the CrowdStrike Falcon® Complete managed detection and response team observed eCrime adversaries that had previously relied on macro execution for malware delivery adapt their tactics, techniques and procedures (TTPs). …
When the Absence of Noise Becomes Signal: Defensive Considerations for Lazarus FudModule
Direct Kernel Object Manipulation (DKOM) Attacks on ETW Providers” that details the capabilities of a sample attributed to the Lazarus group leveraged to impair visibility of the malware’s operations. This blog will not rehash analysis of the Lazarus malware sample or Event Tracing for Windows (ETW) as that has been previously covered in the X-Force blog post.…
Research by: Shilpesh Trivedi and Tejaswini Sandapolla
The Uptycs Threat Research Team has discovered a new infostealer. Spread by multiple bundlers and new on cybercrime forums, HookSpoofer has keylogging and clipper abilities. (A bundler combines two or more files in a single package.) It sends its stolen data to a Telegram bot.…
The CatB ransomware family, sometimes referred to as CatB99 or Baxtoy, was first observed in late 2022, with campaigns being observed steadily since November. The group’s activities have gained attention due to their ongoing use of DLL hijacking via Microsoft Distributed Transaction Coordinator (MSDTC) to extract and launch ransomware payloads.…
In part one on North Korea’s UNC2970, we covered UNC2970’s tactics, techniques and procedures (TTPs) and tooling that they used over the course of multiple intrusions. In this installment, we will focus on how UNC2970 utilized Bring Your Own Vulnerable Device (BYOVD) to further enable their operations.…
Since June 2022, Mandiant has been tracking a campaign targeting Western Media and Technology companies from a suspected North Korean espionage group tracked as UNC2970. In June 2022, Mandiant Managed Defense detected and responded to an UNC2970 phishing campaign targeting a U.S.-based technology company. During this operation, Mandiant observed UNC2970 leverage three new code families: TOUCHMOVE, SIDESHOW, and TOUCHSHIFT.…
By Securonix Threat Labs, Threat Research: D. Iuzvyk, T. Peck, O. Kolesnikov
TL;DRToday ransomware continues to gain traction and organizations are faced with a barrage of constantly evolving tactics. There are however, several tried-and-true methods of detection or indicators of compromise (IoCs) that many ransomware variants have been using for years with no sign of letting up, relying on the fact that new users will fall for the same old tricks.…