ESET: OceanLotus (APT32) compromises a stock-trading platform's update server, selective SPECTRALVIPER delivery, no integrity checks to defeat

ESET documents two SPECTRALVIPER-delivered OceanLotus (APT32) intrusions running from mid-2024 into 2026: a long-dwell espionage compromise of a Vietnamese infrastructure/transport construction firm (likely via RCE on a public-facing Microsoft SQL Server, T1190) and (more transferable) a supply-chain attack on FireAnt MetaKit, a stock-investment platform, between October 2025 and March 2026 (ESET WeLiveSecurity, 2026-06-11). The platform's update mechanism fetched its version.xml over plain HTTP with no integrity validation; OceanLotus replaced the update binary with a downloader that fingerprinted hosts and delivered the SPECTRALVIPER backdoor via process injection and DLL side-loading (T1195.002, T1055) to only a small subset of victims, investigative targeting, not mass compromise. ESET's disclosure attempts to the vendor went unanswered. [SINGLE-SOURCE, ESET Research.] Defender takeaway: the pattern (unsigned updates, cleartext transport, no version-file integrity check) is endemic in regional/vertical software far beyond Vietnam, inventory third-party auto-updaters in your estate and flag any fetching over HTTP or lacking signature validation; egress-monitor the hosts that run them.