Cisco is warning about a global surge in brute-force attacks targeting various devices, including Virtual Private Network (VPN) services, web application authentication interfaces, and SSH services, since at least March 18, 2024.
"These attacks all appear to be originating from TOR exit nodes and a range of other anonymizing tunnels and proxies," Cisco Talos said.
Successful attacks could
The Russia-linked threat actor known as Turla infected several systems belonging to an unnamed European non-governmental organization (NGO) in order to deploy a backdoor called TinyTurla-NG (TTNG).
"The attackers compromised the first system, established persistence and added exclusions to antivirus products running on these endpoints as part of their preliminary post-compromise actions," Cisco
Threat actors are leveraging digital document publishing (DDP) sites hosted on platforms like FlipSnack, Issuu, Marq, Publuu, RelayTo, and Simplebooklet for carrying out phishing, credential harvesting, and session token theft, once again underscoring how threat actors are repurposing legitimate services for malicious ends.
"Hosting phishing lures on DDP sites increases the likelihood
Mexican users have been targeted with tax-themed phishing lures at least since November 2023 to distribute a previously undocumented Windows malware called TimbreStealer.
Cisco Talos, which discovered the activity, described the authors as skilled and that the "threat actor has previously used similar tactics, techniques and procedures (TTPs) to distribute a banking trojan known
An unnamed Islamic non-profit organization in Saudi Arabia has been targeted as part of a stealthy cyber espionage campaign designed to drop a previously undocumented backdoor called Zardoor.
Cisco Talos, which discovered the activity in May 2023, said the campaign has likely persisted since at least March 2021, adding it has identified only one compromised target to date, although it's
The threat actors behind the 8Base ransomware are leveraging a variant of the Phobos ransomware to conduct their financially motivated attacks.
The findings come from Cisco Talos, which has recorded an increase in activity carried out by the cybercriminals.
“Most of the group’s Phobos variants are distributed by SmokeLoader, a backdoor trojan," security researcher Guilherme Venere said in an
Telecommunication service providers in the Middle East are the target of a new intrusion set dubbed ShroudedSnooper that employs a stealthy backdoor called HTTPSnoop.
"HTTPSnoop is a simple, yet effective, backdoor that consists of novel techniques to interface with Windows HTTP kernel drivers and devices to listen to incoming requests for specific HTTP(S) URLs and execute that content on the
A legitimate Windows tool used for creating software packages called Advanced Installer is being abused by threat actors to drop cryptocurrency-mining malware on infected machines since at least November 2021.
"The attacker uses Advanced Installer to package other legitimate software installers, such as Adobe Illustrator, Autodesk 3ds Max, and SketchUp Pro, with malicious scripts and uses
An unknown threat actor is using a variant of the Yashma ransomware to target various entities in English-speaking countries, Bulgaria, China, and Vietnam at least since June 4, 2023.
Cisco Talos, in a new write-up, attributed the operation with moderate confidence to an adversary of likely Vietnamese origin.
"The threat actor uses an uncommon technique to deliver the ransom note," security
A Microsoft Windows policy loophole has been observed being exploited primarily by native Chinese-speaking threat actors to forge signatures on kernel-mode drivers.
"Actors are leveraging multiple open-source tools that alter the signing date of kernel mode drivers to load malicious and unverified drivers signed with expired certificates," Cisco Talos said in an exhaustive two-part report shared
Security researchers have detailed the inner workings of the commercial Android spyware called Predator, which is marketed by the Israeli company Intellexa (previously Cytrox).
Predator was first documented by Google's Threat Analysis Group (TAG) in May 2022 as part of attacks leveraging five different zero-day flaws in the Chrome web browser and Android.
The spyware, which is delivered by means
The threat actor behind the information-stealing malware known as Typhon Reborn has resurfaced with an updated version (V2) that packs in improved capabilities to evade detection and resist analysis.
The new version is offered for sale on the criminal underground for $59 per month, $360 per year, or alternatively, for $540 for a lifetime subscription.
"The stealer can harvest and exfiltrate
A previously undocumented threat actor dubbed YoroTrooper has been targeting government, energy, and international organizations across Europe as part of a cyber espionage campaign that has been active since at least June 2022.
"Information stolen from successful compromises include credentials from multiple applications, browser histories and cookies, system information and screenshots," Cisco
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