Threats Tagged 'multi-stage loader'

A threat hunting investigation identified suspicious PowerShell content served from an IP address (203.188.171.166) and domain (dorenzaa.com), both retrieving ZIP archives from Vercel-hosted infrastructure. The PowerShell loaders extract and execute payloads locally, including Grape.exe, UltraToolliteSetup.exe, and draw.io.exe. Analysis revealed heavily obfuscated PowerShell stages utilizing Base64 encoding, XOR-based obfuscation with the key 'Write', dynamically constructed IEX commands, and hidden PowerShell execution. A decoy 'Verification complete!' message disguised as Google.com was presented to victims during execution. Multiple Vercel instances hosted additional artifacts including loader scripts and executables. The initial infection vector remains unidentified, suggesting these PowerShell-hosting URLs represent second-stage delivery points in a multi-stage attack chain.

A sophisticated phishing campaign targeting Indian businesses and taxpayers leverages GST-related themes to distribute Remcos RAT through a multi-stage .NET framework. Threat actors impersonate Government of India GST communications using fraudulent refund notifications with convincing ARN references. The attack chain begins with a malicious RAR archive containing a .NET executable that employs bitmap-based payload concealment techniques. Through successive stages including Windows Health Optimizer Plus.dll and perfgurd.dll, the malware deploys Remcos RAT entirely in memory, establishing persistence via PowerShell scripts and registry modifications. Command-and-control infrastructure utilizes dynamic DNS services with randomized subdomains under aofmokighoig.hath.network. The deployed Remcos RAT enables remote command execution, keylogging, credential harvesting, file manipulation, and comprehensive system reconnaissance capabilities, representing a financially motivated cybercrime operation specifically t...

MediumMalwareBritish Indian Ocean TerritoryIndia#bitmap steganography#fileless execution#multi-stage loader

Four npm packages in the AsyncAPI namespace were compromised to distribute a multi-stage botnet loader called Miasma. The attack utilized trusted GitHub Actions publishing but originated from a poisoned source commit. Malicious code was injected into legitimate source files that execute when imported, launching a detached Node.js process to download an 8.25 MB encrypted payload from IPFS. The final payload is a sophisticated tasking framework supporting multiple command-and-control channels including REST, Nostr relays, IPFS, Ethereum smart contracts, and BitTorrent DHT. The framework establishes persistence via systemd services on Linux and fake NodeJS directories, supporting file operations, shell execution, data collection, and cross-ecosystem propagation capabilities for npm, PyPI, RubyGems, and Cargo ecosystems.

SideCopy APT, a Pakistan-linked threat group under the Transparent Tribe umbrella, executed a targeted spear phishing campaign against Afghanistan's Ministry of Finance and provincial revenue directorates. The attack begins with a Pashto-language LNK file disguised as a staff directory document, which executes mshta.exe to fetch remote HTA payloads from compromised Afghan education infrastructure. The multi-stage chain deploys obfuscated JavaScript, establishes registry-based persistence mimicking Microsoft Edge, and ultimately delivers XenoRAT 1.8.7 beaconing to bulletproof Bulgarian hosting. The campaign demonstrates precise knowledge of target administrative context, using Dari and Pashto decoy documents listing provincial finance officials with direct contact information. Infrastructure analysis reveals deliberate staging within Afghan government IP space and C2 infrastructure overlapping with previous SideCopy operations.

MediumMalwareAfghanistan#sidecopy#xenorat#transparent tribe

A sophisticated multi-stage infection chain was identified through proactive threat hunting, beginning with the execution of MicrosoftToolkit.exe, a commonly abused hack tool. The attack employed file masquerading techniques, renaming a .dot file to .bat format to evade detection. The malware performed process discovery and attempted to terminate security-related processes before extracting payloads using extract32.exe. An AutoIt-compiled executable (Replies.scr) functioned as a loader, processing an external encrypted payload file and establishing command-and-control communication with infrastructure associated with Vidar Stealer. The malware demonstrated advanced anti-analysis capabilities, including debugger detection and instrumentation callback queries. It targeted credentials, browser data, cryptocurrency wallets, and system information. Post-execution cleanup routines deleted artifacts and terminated processes to minimize forensic evidence and evade detection, significantly complicating incident res...

An emerging threat group is conducting a global SEO-poisoning campaign distributing trojanized Microsoft Teams installers that deploy a multi-stage shellcode loader and backdoor designated Lorem Ipsum. Active since February 2026, the campaign targets users searching for Microsoft Teams across six countries, with confirmed targeting of a US healthcare organization. The operators evolved rapidly from minimally obfuscated test builds to sophisticated loaders featuring substitution cipher decoding, XOR-encrypted shellcode, DLL sideloading, and JFIF-disguised C2 traffic. The malware distinctively abuses letsdiskuss[.]com, a legitimate India-based platform, as a dead-drop resolver for C2 infrastructure. Attackers use validly signed MSI installers with three-day Microsoft ID Verified certificates, NameCheap-registered infrastructure weaponized within hours, and per-victim UUID-tracked callbacks. Development velocity suggests possible LLM-assisted tooling, indicating a well-funded mid-tier criminal actor operating...

MintsLoader, a malicious loader first observed in 2024, is employed in phishing and drive-by download campaigns to deploy payloads like GhostWeaver, StealC, and modified BOINC clients. It uses obfuscated JavaScript and PowerShell scripts in a multi-stage infection chain, featuring sandbox evasion techniques, a domain generation algorithm, and HTTP-based C2 communications. Various threat groups, including TAG-124 and SocGholish operators, utilize MintsLoader to target industrial, legal, and energy sectors. The loader's sophisticated obfuscation and evasion methods complicate detection, but Recorded Future's Malware Intelligence Hunting provides up-to-date information on new samples and C2 domains.

MediumMalwareItalyGermanyFrance+5#asyncrat#boinc#tag-124