Cisco Talos Blog

May 3, 2022 08:00

Conti and Hive ransomware operations: What we learned from these groups' victim chats

As part of Cisco Talos’ continuous efforts to learn more about the current ransomware landscape, we recently examined a trove of chat logs between the Conti and Hive ransomware gangs and their victims. Ransomware-as-a-service groups have exploded in popularity over the past few

April 14, 2022 07:59

Threat Spotlight: "Haskers Gang" Introduces New ZingoStealer

Update (04/14/22): Following the initial publication of this blog, we observed a new post in the Haskers Gang Telegram channel announcing that ownership of the ZingoStealer project is being transferred to a new threat actor. We also observed the malware author offering to sell t

April 5, 2022 08:00

Threat Spotlight: AsyncRAT campaigns feature new version of 3LOSH crypter

By Edmund Brumaghin, with contributions from Alex Karkins. * Ongoing malware distribution campaigns are using ISO disk images to deliver AsyncRAT, LimeRAT and other commodity malware to victims. * The infections leverage process injection to evade detection by endpoint securit

March 29, 2022 08:01

Transparent Tribe campaign uses new bespoke malware to target Indian government officials

By Asheer Malhotra and Justin Thattil with contributions from Kendall McKay. * Cisco Talos has observed a new Transparent Tribe campaign targeting Indian government and military entities. While the actors are infecting victims with CrimsonRAT, their well-known malware of choi

March 17, 2022 07:58

From BlackMatter to BlackCat: Analyzing two attacks from one affiliate

* BlackCat is a recent and growing ransomware-as-a-service (RaaS) group that targeted several organizations worldwide over the past few months. * There are rumors of a relationship between BlackCat and the BlackMatter/DarkSide ransomware groups, infamous for attacking the Colon

March 10, 2022 08:02

Iranian linked conglomerate MuddyWater comprised of regionally focused subgroups

* Cisco Talos has observed new cyber attacks targeting Turkey and other Asian countries we believe with high confidence are from groups operating under the MuddyWater umbrella of APT groups. U.S. Cyber Command recently connected MuddyWater to Iran's Ministry of Intelligence

February 9, 2022 08:05

What’s with the shared VBA code between Transparent Tribe and other threat actors?

Recently, we've been researching several threat actors operating in South Asia: Transparent Tribe, SideCopy, etc., that deploy a range of remote access trojans (RATs). After a hunting session in our malware sample repositories and VirusTotal while looking into these actors, w

February 2, 2022 08:00

Arid Viper APT targets Palestine with new wave of politically themed phishing attacks, malware

Cisco Talos has observed a new wave of Delphi malware called Micropsia developed and operated by the Arid Viper APT group since 2017. * This campaign targets Palestinian entities and activists using politically themed lures. * The latest iteration of the implant contains multi

January 31, 2022 08:00

Iranian APT MuddyWater targets Turkish users via malicious PDFs, executables

Cisco Talos has observed a new campaign targeting Turkish private organizations  alongside governmental institutions. * Talos attributes this campaign with high confidence to MuddyWater — an APT group recently attributed to Iran's Ministry of Intelligence and Security (MOIS