APT

This brief summarizes newly published IOCs consisting of domains and URLs associated with the Kimsuky APT group as of June 2nd, 2026, sourced from a Maltrail feed.

ESET's APT Activity Report for Q4 2025 and Q1 2026 highlights diverse campaigns by China, Iran, North Korea, and Russia-aligned threat actors, including espionage, supply chain compromise, and destructive attacks.

The Iranian APT group Screening Serpens targeted the tech and defense sectors in the U.S., Israel, and the UAE between February and April 2026, deploying six new RAT variants from the MiniUpdate and MiniJunk V2 malware families, using tailored social engineering lures and AppDomainManager hijacking.

The Webworm APT group is using updated tactics, techniques, and procedures, including new backdoors using Discord and Microsoft Graph API for command and control, custom proxy tools, and GitHub for malware staging, shifting focus to European governmental organizations.

This brief summarizes indicators of compromise (IOCs) from a Maltrail feed update on 2026-05-20, detailing network activity associated with APT Kimsuky, Lummac2, MagentoCore, and FakeApp campaigns, providing actionable intelligence for detection and response.

Kimsuky, a North Korean APT group, is actively targeting organizations, primarily in South Korea, with evolving tactics and tools, leveraging spear-phishing emails and messenger contacts to deploy malware such as PebbleDash and AppleSeed for establishing backdoors and stealing information.

The WINDSHIFT APT group is infecting Macs by abusing custom URL schemes, where advertising support for a custom URL scheme in an application's Info.plist causes the application to be automatically launched when a URL with that scheme is opened, allowing attackers to remotely compromise systems with minimal user interaction and creating an initial access vector.

In 2025, state-sponsored actors from China, Russia, North Korea, and Iran leveraged vulnerabilities and identity compromise for initial access, focusing on persistence for long-term espionage or disruption.

A Russian APT group is exploiting a Zimbra XSS vulnerability (details unspecified) to target the Ukrainian government in an operation dubbed 'GhostMail'.

This brief summarizes IOCs extracted from the Maltrail feed on March 15, 2026, covering domains and URLs associated with threats targeting macOS and Android platforms, including OSX_Atomic, FakeApp, Android_Joker, Lummack2, APT_Sidewinder, APT_Kimsuky, and Hak5Cloud_C2.

This brief analyzes IOCs aggregated by Maltrail on February 27, 2026, highlighting network activity associated with diverse threat actors including APT_UNC2465, Lazarus Group, Gorat, APT_Bitter, Android_Joker, PowerShell Injector, SmokeLoader, and FakeApp campaigns targeting various sectors.

The WindShift APT group is targeting Middle Eastern governments with a first-stage macOS implant called OSX.WindTail, abusing custom URL schemes for initial infection and establishing persistence via login items, while decrypting embedded strings to identify file extensions of interest.