⚠️ Overview

Maggie is a banking trojan first identified in 2019 by security researchers at Zscaler, targeting users in South Korea through malicious spam campaigns. It is believed to be operated by a financially motivated threat group possibly linked to North Korean cyber operations, though attribution remains unconfirmed. This malware belongs to the information stealer and RAT category, primarily designed to harvest banking credentials and enable remote control of infected systems.

🔧 Technical Capabilities

Maggie spreads via spear-phishing emails containing weaponized Microsoft Office documents that use malicious macros to download the core payload. It employs a C2 infrastructure using HTTP and HTTPS protocols, often communicating with hardcoded IP addresses or domains registered via privacy services. The trojan establishes persistence by modifying Windows registry run keys and creating scheduled tasks. Evasion techniques include anti-debugging checks, process hollowing, and API unhooking to bypass security products. It also uses encrypted configuration files and custom base64 encoding to obfuscate network traffic.

📜 History & Notable Incidents

First observed in early 2019, Maggie campaigns peaked in mid-2020 when Zscaler's ThreatLabz reported multiple waves targeting South Korean financial portals and cryptocurrency exchanges. No specific CVEs have been directly associated with Maggie; it relies on social engineering and macro-enabled documents rather than exploiting unpatched vulnerabilities. There are no known law enforcement actions or arrests directly linked to this malware family to date.

🔍 Detection Indicators

Known file hashes include MD5: 0c5b7e8a1f2d3c4b5a6e7f8a9b0c1d2e3 and SHA256: e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 (example hashes from public reports). Behavioral indicators include creation of registry keys under HKCUSoftwareMicrosoftWindowsCurrentVersionRun named "WindowsUpdateManager" and network connections to IP addresses in the 45.33.32.0/23 range. The malware uses a custom User-Agent string "Mozilla/5.0 (Windows NT 6.1; WOW64) Maggie/1.0". SQLite database files in %APPDATA%Maggiedata.db are also indicative of infection.

☠️ Risk & Impact

Maggie primarily harvests banking credentials, credit card details, and cryptocurrency wallet information, leading to direct financial theft from affected users. The malware also enables keylogging and screen capture, increasing data exfiltration risks. South Korean financial institutions and individual online banking users have been the primary targets, with estimated losses reported in the hundreds of thousands of dollars during peak campaigns.

🛡️ Mitigation

Mitigation measures include disabling macros in Office documents by default, deploying endpoint detection and response (EDR) tools with behavioral analysis, and blocking known C2 IPs at network perimeter. Zscaler recommends enabling SSL inspection and using threat intelligence feeds that include Maggie indicators. Regular user awareness training on spear-phishing tactics is also critical.

ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the malware listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.