Threats Tagged 'powershell stager'

Arctic Wolf Labs has been tracking multiple campaigns built around CastleLoader, a multi-stage shellcode loader that has evolved significantly. Three distinct campaigns were identified: Urutyka, Garrigin, and Noidret. The most significant development is the integration of NeedleStealer framework payloads, marking the first observed use of Rust and Golang tooling in this campaign cluster. NeedleStealer includes a Rust-based desktop cryptocurrency wallet spoofer targeting Ledger, Trezor, and Exodus wallets, and a Golang-based malicious browser extension installer. The campaigns utilize obfuscated PowerShell stagers, IronPython runtimes, and NodeJS-based shellcode injectors. Infrastructure analysis revealed consistent naming patterns, staged domains for future operations, and the use of fraudulently obtained code-signing certificates. The campaigns consistently deploy NetSupport RAT and CastleStealer alongside the new NeedleStealer payloads, suggesting an expansion toward high-value cryptocurrency targeting.

HighVulnerabilityUnited StatesCanada#cve#cve-2026-0257#cwe-565

SideCopy, also tracked as APT36 or Transparent Tribe, has launched a new attack campaign targeting Indian defense personnel using a fake 'Minutes Of Meeting' document as lure. The attack employs an identical playbook to previous operations: a double-extension Minutes Of Meeting.docx.lnk file executes a PowerShell stager (pdfdocs.bat) from a nested pdfdocs folder while displaying a clean decoy document. The chain deploys a Remote Access Trojan (pdfdocs) that establishes persistence through the HKCU Run key. The staged components demonstrate low detection rates at initial delivery, with the decoy document scoring 0/66, the stager 1/61, and only the final executable reaching 35/71 detections.

MediumMalwareBritish Indian Ocean TerritoryIndia#rat#indian defense targeting#double extension