By Securonix Threat Labs, Threat Research: Den Iuzvyk, Tim Peck, Oleg Kolesnikov
TL;DRThe Securonix Threat Research team (STR) has recently observed a new attack campaign tracked by Securonix as OCX#HARVESTER. Some of the malicious payloads leveraged as part of the attack campaign observed appear to be related to the More_eggs malicious payloads reported earlier [1].…
Over the past several months, Sophos X-Ops has investigated multiple incidents where attackers attempted to disable EDR clients with a new defense evasion tool we’ve dubbed AuKill. The AuKill tool abuses an outdated version of the driver used by version 16.32 of the Microsoft utility, Process Explorer, to disable EDR processes before deploying either a backdoor or ransomware on the target system.…
The Uptycs threat research team has discovered a new Linux malware, Poseidon, deployed by the APT-36 group, also known as Transparent Tribe. This Pakistan-based advanced persistent threat group is notorious for targeting Indian government organizations, military personnel, and defense contractors.…
Over the past several months, Microsoft has observed a mature subgroup of Mint Sandstorm, an Iranian nation-state actor previously tracked as PHOSPHORUS, refining its tactics, techniques, and procedures (TTPs). Specifically, this subset has rapidly weaponized N-day vulnerabilities in common enterprise applications and conducted highly-targeted phishing campaigns to quickly and successfully access environments of interest.…
The Aurora stealer is a notorious Golang-based information stealer that’s been gaining popularity from the end of 2022 through the first quarter of 2023. The Morphisec Threat Labs team has been tracing its activities using our prevention telemetry along with dark-web activities. …
Zscaler ThreatLabz has been tracking the Trigona ransomware family, which dates back to June 2022.…
The Uptycs threat research team has identified a new variant of credential stealing malware, dubbed Zaraza bot, that uses telegram as its command and control. Zaraza is the Russian word for infection.
Zaraza bot targets a large number of web browsers and is being actively distributed on a Russian Telegram hacker channel popular with threat actors.…
By Max Kersten · April 13, 2023
The underground intelligence was obtained by N07_4_B07.
Another day, another ransomware-as-a-service (RaaS) provider, or so it seems. We’ve observed the “Read The Manual” (RTM) Locker gang, previously known for their e-crime activities, targeting corporate environments with their ransomware, and forcing their affiliates to follow a strict ruleset.…
Executive summary
TEHTRIS Threat Hunters analyzed illicit cryptomining activity targeting Linux-based machines. The attack happened on one of our high interaction honeypots hosted in France in mid-January across a short timeframe (less than 5 minutes). Our honeypot was a Linux under Ubuntu 22.04. The cybercriminal group behind this attack employs a strategy to optimize the use of the compromised device’s resources.…
In a recent TLP:CLEAR publication the European Union Agency for Cybersecurity (ENISA) and CERT-EU warned about malicious activities against EU governments and businesses attributed to Chinese Advanced Persistent Threat (APT) groups. In contrast to other nation state-backed Threat Groups from e.g. North Korea, who seek to profit financially from cyber attacks, Chinese Threat Actors are motivated to conduct political and industrial espionage and establish long-term persistence.…
This post is also available in: 日本語 (Japanese)
Executive SummaryUnit 42 recently discovered a malware campaign targeting Portuguese speakers, which aims to redirect cryptocurrency away from legitimate users’ wallets and into wallets controlled by threat actors instead. To do this, the campaign uses a type of malware known as a cryptocurrency clipper, which monitors the victim’s clipboard for signs that a cryptocurrency wallet address is being copied.…
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.…