All news with #dll sideloading tag

Oversized SVG Files Deliver AsyncRAT Across Latin America

🛡️ A recent campaign in Latin America leverages oversized SVG image attachments to deliver AsyncRAT by embedding the entire malicious payload inside the XML. Victims receive convincing, urgent emails impersonating judicial services, and interacting with the >10MB SVG loads a fake portal that triggers a password-protected ZIP download containing an executable and a DLL-sideloaded payload. ESET telemetry highlights a spike in activity, notably affecting Colombia, while attackers appear to use AI to generate unique, randomized SVGs to evade detection.

Gamaredon and Turla Collaboration Targets Ukraine in 2025

🚨 ESET Research reports the first observed collaboration between Gamaredon and Turla in Ukraine, with telemetry from February to June 2025 showing Gamaredon tools used to deliver and restart Turla’s Kazuar implants. ESET assesses with high confidence that Gamaredon provided initial access and delivery channels while Turla selectively deployed advanced Kazuar implants on higher‑value hosts. The analysis details multiple infection chains involving PteroGraphin, PteroOdd and PteroPaste, and includes technical indicators and remediation guidance.

Evolving ClickFix Variants Lead to MetaStealer Deployments

🔍 Huntress analysts observed an uptick in attacks that combine classic ClickFix social engineering with more advanced deployment techniques over the past fifteen business days. A fake AnyDesk installer used a Cloudflare Turnstile lure that opened Windows File Explorer via the search-ms protocol to deliver an LNK payload disguised as a PDF and install an MSI that dropped MetaStealer. Separately, operators deployed Cephalus ransomware using DLL sideloading through the legitimate SentinelOne host binary, illustrating evolving tradecraft that mixes manual user interaction and technical evasion.

Chinese APT Uses EggStreme Fileless Framework in Espionage

🛡️ Bitdefender attributed a campaign against a Philippines-based military contractor to a China-linked APT that deployed a previously undocumented fileless framework named EggStreme. The multi-stage operation begins with EggStremeFuel (mscorsvc.dll), which profiles systems, opens a C2 channel, stages loaders, and triggers in-memory execution of the core backdoor via DLL sideloading. EggStremeAgent functions as a central backdoor, injecting a session-specific keylogger (EggStremeKeylogger), communicating over gRPC, and exposing a 58-command toolkit for discovery, lateral movement, privilege escalation and data theft. An auxiliary implant, EggStremeWizard (xwizards.dll), provides reverse-shell access and resilient C2 options; Bitdefender warned that fileless execution and heavy DLL sideloading make detection and forensics difficult.

Cephalus Ransomware: Emergence and Threat Profile

🚨 Cephalus is a mid‑2025 ransomware operation that both encrypts systems and exfiltrates sensitive data for publication on a dark‑web leak site. The group commonly gains initial access via Remote Desktop Protocol (RDP) accounts lacking multi‑factor authentication and uses a DLL sideloading chain that abuses SentinelOne's SentinelBrowserNativeHost.exe to load a malicious DLL and execute the payload. Infected files are renamed with the .sss extension, Volume Shadow Copies are deleted, and Windows Defender is disabled. Organisations should prioritise MFA, timely patching, secure offline backups, network segmentation and staff training to reduce risk.

ShadowCaptcha Exploits WordPress Sites to Spread Malware

🔒 ShadowCaptcha is a large-scale campaign abusing over 100 compromised WordPress sites to push visitors to fake Cloudflare or Google CAPTCHA pages using the ClickFix social‑engineering lure. Injected JavaScript initiates redirection chains, employs anti‑debug techniques, and silently copies commands to the clipboard to coerce users into running built‑in Windows tools or saving and executing HTA files. Attackers weaponize LOLBins and DLL side‑loading to deliver installers and payloads — observed outcomes include credential stealers (Lumma, Rhadamanthys), Epsilon Red ransomware, and XMRig cryptocurrency miners — with some miner variants fetching configs from Pastebin and dropping a vulnerable driver (WinRing0x64.sys) to seek kernel access. Affected sites span multiple countries and sectors, underscoring the importance of timely WordPress hardening, network segmentation, user training, and MFA.

UNC6384 Uses Captive Portal Hijacks to Deploy PlugX

🔐 Google’s Threat Intelligence Group (GTIG) detected a March 2025 campaign attributed to UNC6384 that uses captive-portal hijacks to deliver a digitally signed downloader called STATICPLUGIN. The downloader (observed as AdobePlugins.exe) retrieves an MSI and, via DLL sideloading through Canon’s IJ Printer Assistant Tool, stages a PlugX variant tracked as SOGU.SEC entirely in memory. Operators used valid TLS and GlobalSign-signed certificates issued to Chengdu Nuoxin Times Technology Co., Ltd, aiding evasion while targeting diplomats and other entities.

Deception in Depth: UNC6384 Hijacks Web Traffic Globally

🛡️ In March 2025, Google Threat Intelligence Group identified a complex espionage campaign attributed to the PRC‑nexus actor UNC6384 that targeted diplomats in Southeast Asia and other global entities. The attackers hijacked web traffic via a captive‑portal and AitM redirect to deliver a digitally signed downloader tracked as STATICPLUGIN, which retrieved a disguised MSI and staged an in‑memory deployment of the SOGU.SEC backdoor (PlugX). The operation abused valid code‑signing certificates, DLL side‑loading via a novel launcher CANONSTAGER, and indirect execution techniques to evade detection. Google issued alerts, added IOCs to Safe Browsing, and recommends enabling Enhanced Safe Browsing, applying updates, and enforcing 2‑Step Verification.