Nebulous Mantis Strikes Again: Russian Cyber Espionage Group Targets NATO with Sneaky RomCom Malware
Nebulous Mantis, the Russia-linked group, is back at it again, targeting NATO-related defense organizations with their signature RomCom malware. Like a bad sequel, they’re using spear-phishing tactics and living-off-the-land techniques for data theft—proving once more that cyber espionage is their favorite blockbuster hit.

Hot Take:
Move over, James Bond, because Nebulous Mantis is the new spy in town, and it’s bringing a whole new meaning to the phrase “computer bug”. Forget about shaken, not stirred; this cyber espionage group’s cocktail of cyber-attacks is more like “infiltrated, not detected”. With their cloak-and-dagger tactics, they’re giving NATO-related defense organizations a run for their money. Perhaps it’s time for these organizations to start hiring some digital exterminators to handle this Mantis problem!
Key Points:
- Nebulous Mantis, a Russian-linked cyber espionage group, targets NATO-related entities using the RomCom RAT.
- The group employs advanced evasion techniques like living-off-the-land tactics and encrypted C2 communications.
- They imitate trusted services (e.g., OneDrive) to trick victims into downloading malware.
- Post-infection, the malware maintains persistence via registry manipulation and uses ransomware for added chaos.
- Experts warn of RomCom’s significant cyber threat due to its technical sophistication and operational security.