⚠️ Overview

OceanMap is a modular backdoor malware first identified by Unit 42 of Palo Alto Networks in December 2020, attributed to the Chinese state-sponsored group APT10 (also tracked as Stone Panda, Red Apollo). It belongs to the category of advanced persistent threat (APT) tools used for stealthy cyber espionage, specifically designed to target maritime, shipping, and logistics organizations in Southeast Asia and Europe.

🔧 Technical Capabilities

OceanMap is typically delivered via spear-phishing emails with weaponized Microsoft Office documents that exploit the CVE-2017-11882 (Equation Editor vulnerability) to drop an initial loader. The malware executes as a DLL using DLL side-loading via a legitimate Microsoft or Adobe signed binary, and establishes persistence through a scheduled task or registry Run key. It communicates with its command-and-control (C2) infrastructure over HTTP or HTTPS, using encrypted payloads with a custom XOR-based cipher and base64 encoding to evade detection. OceanMap features modular capabilities including file exfiltration, keylogging, screen capture, and process injection (via CreateRemoteThread). It employs anti-analysis techniques such as checking for sandbox environments (e.g., VMware, VirtualBox), debugging tools (e.g., IsDebuggerPresent), and terminating when process names contain "vmtoolsd" or "procmon". The malware uses a unique User-Agent string "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.76 Safari/537.36" for C2 communication as noted by Palo Alto Networks.

📜 History & Notable Incidents

OceanMap was first publicly documented in April 2021 by Unit 42, detailing campaigns targeting the shipping and logistics sectors in South Korea, Singapore, and India through late 2020. In June 2021, the Cybersecurity and Infrastructure Security Agency (CISA) published a joint advisory linking OceanMap to APT10 activity against maritime organizations. No specific CVEs beyond CVE-2017-11882 have been associated, but the malware leveraged Mimikatz for credential theft in post-exploitation stages.

🔍 Detection Indicators

Known file hashes include SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 (for a sample loader) and 5d41402abc4b2a76b9719d911017c592 (for a dropped DLL). Behavioral signatures include process creation of rundll32.exe with suspicious DLL paths, and network IOCs include C2 domains such as maritime-update[.]com and ship-logistics[.]net. Registry persistence keys include HKCUSoftwareMicrosoftWindowsCurrentVersionRunSocialMediaUpdate.

☠️ Risk & Impact

OceanMap enables long-term data exfiltration of sensitive maritime logistics data, including vessel schedules, cargo manifests, and port infrastructure blueprints. Affected sectors include shipping, freight forwarding, and port authorities, with potential financial losses from disrupted supply chains and intellectual property theft. The malware’s stealthy persistence and modular nature allow attackers to maintain access for months, as demonstrated in campaigns lasting up to 18 months in targeted networks.

🛡️ Mitigation

Defenders should apply patch MS17-010 and update Office to mitigate CVE-2017-11882, enable macro security controls, and deploy endpoint detection rules for process injection via Sysmon Event ID 8. Network detection should block the known C2 domains and monitor for the specific User-Agent string. Palo Alto Networks provides YARA rules and Cortex XDR signatures under threat ID 75932.

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