The PolySwarm Blog

Analyze suspicious files and URLs, at scale, millions of times per day. Get real-time threat intel from a crowdsourced network of security experts and antivirus companies competing to protect you.

Atomic Stealer Evolves

Jul 25, 2025 2:47:25 PM / by The Hivemind posted in Threat Bulletin, Malware-As-A-Service, Evolving Threat, Spear Phishing, Cryptocurrency Theft, macOS security, Atomic macOS Stealer, AMOS malware, macOS backdoor, persistent access, Moonlock cybersecurity

0 Comments

Verticals Targeted: Cryptocurrency, Freelancers, Artists
Regions Targeted: United States, France, Italy, United Kingdom, Canada, others
Related Families: None

Read More

New MacOS.ZuRu Variant Discovered

Jul 22, 2025 3:05:50 PM / by The Hivemind posted in Threat Bulletin, Evolving Threat, Malware Analysis, Cybersecurity Threat, MacOS malware, ZuRu malware, Termius trojan, macOS security, backdoor threat, SSH client attack, Khepri C2, developer security

0 Comments

Verticals Targeted: IT, software development  
Regions Targeted: None specified
Related Families: None

Executive Summary

A new variant of the macOS.ZuRu malware, first identified in 2021, was discovered, leveraging a trojanized Termius application to deploy a modified Khepri C2 beacon, targeting developers and IT professionals. This sophisticated backdoor employs advanced techniques to evade detection and establish persistent remote access.

Read More

BERT Ransomware

Jul 11, 2025 2:02:09 PM / by The Hivemind posted in Threat Bulletin, Europe, REvil, Healthcare, Asia, Babuk, Technology, Emerging Threat, PowerShell, Evolving Threat, Event Services, United States, BERT ransomware

0 Comments

Verticals Targeted: Healthcare, Technology
Regions Targeted: Asia, Europe, United States
Related Families: REvil, Babuk

Read More

Godfather Evolves With Advanced On-Device Virtualization Capabilities

Jun 30, 2025 1:56:44 PM / by The Hivemind posted in Threat Bulletin, Evolving Threat, Android Malware, Godfather Malware, Mobile Banking Trojan, on-device virtualization, cryptocurrency app attacks, accessibility service abuse, overlay attacks, mobile security threats, banking app hijacking

0 Comments

Verticals Targeted: Financial
Regions Targeted: Not specified
Related Families: None

Executive Summary

Industry researchers have identified an advanced evolution of the Godfather banking trojan, which employs on-device virtualization to hijack mobile banking and cryptocurrency applications on Android devices. This sophisticated technique allows attackers to monitor and control user interactions within a virtualized app environment, posing a significant threat to mobile security.

Read More

Crocodilus Evolves, Expands Targeting

Jun 20, 2025 12:01:52 PM / by The Hivemind posted in Threat Bulletin, Banking Trojan, Evolving Threat, Crocodilus, Android Malware, Cryptocurrency Theft, Phishing Campaign, Overlay Attack, Mobile Security, ThreatFabric

0 Comments

Verticals Targeted: Banking, E-commerce, Cryptocurrency
Regions Targeted: Turkey, Poland, Spain, Argentina, Brazil, India, Indonesia, United States
Related Families: None specified

Executive Summary

Crocodilus, an Android banking trojan first identified in March 2025, has rapidly evolved into a global threat, targeting banking and cryptocurrency users across eight countries with advanced overlay attacks and social engineering tactics. Its enhanced obfuscation and new features, such as contact list manipulation, amplify its ability to evade detection and execute fraudulent transactions.

Read More

New Chaos RAT Variants Observed

Jun 16, 2025 1:57:09 PM / by The Hivemind posted in Threat Bulletin, Malware, Data Theft, Evolving Threat, Cybersecurity, Chaos RAT, Remote Administration Tool, Linux Malware, Windows Malware, Phishing Attacks, Cryptocurrency Mining

0 Comments

Verticals Targeted: Not specified
Regions Targeted: Not specified
Related Families: None identified

Executive Summary

New variants of Chaos RAT, an open-source remote administration tool (RAT) first observed in 2022, have been identified. The new variants target both Windows and Linux systems through sophisticated phishing campaigns. This evolving malware deploys cryptominers, steals sensitive data, and establishes persistent control over infected devices.

Read More

StealC Evolves

May 12, 2025 3:01:20 PM / by The Hivemind posted in Threat Bulletin, Stealer, Evolving Threat, StealC, StealCV2, Amadey

0 Comments

Related Families: Amadey

Executive Summary

StealC V2, a sophisticated evolution of the StealC information stealer, introduces enhanced payload delivery, RC4 encryption, and a redesigned control panel, posing significant risks to organizations.

Read More

Venom Spider Using New TerraStealerV2 and TerraLogger Malware

May 9, 2025 2:17:08 PM / by The Hivemind posted in Threat Bulletin, Evolving Threat, TerraStealerV2, TerraLogger, Venom Spider

0 Comments

Related Families: VenomLNK, TerraLoader, TerraStealer, TerraTV, TerraCrypt, TerraRecon, TerraWiper, lite_more_eggs, RevC2, Venom Loader

Executive Summary

TerraStealerV2 and TerraLogger are two new malware families from Venom Spider, enhancing their Malware-as-a-Service (MaaS) platform with credential theft and keylogging capabilities. These tools, observed between January and April 2025, indicate active development but lack the sophistication of mature Venom Spider malware.

Read More

Subscribe to Email Updates

Lists by Topic

see all

Posts by Topic

See all

Recent Posts