APT28-Linked Campaign Deploys BadPaw Loader and MeowMeow Backdoor in Ukraine

Cybersecurity researchers have disclosed details of a new Russian cyber campaign that has targeted Ukrainian entities with two previously undocumented malware families named BadPaw and MeowMeow. "The attack chain initiates with a phishing email containing a link to a ZIP archive. Once extracted, ...

Trojanized ESET Installers Drop Kalambur Backdoor in Phishing Attacks on Ukraine

A previously unknown threat activity cluster has been observed impersonating Slovak cybersecurity company ESET as part of phishing attacks targeting Ukrainian entities. The campaign, detected in May 2025, is tracked by the security outfit under the moniker InedibleOchotense , describing it as...

CERT-UA Identifies Malicious RDP Files in Latest Attack on Ukrainian Entities

The Computer Emergency Response Team of Ukraine CERT-UA has detailed a new malicious email campaign targeting government agencies, enterprises, and military entities. "The messages exploit the appeal of integrating popular services like Amazon or Microsoft and implementing a zero-trust...

New IDAT Loader Attacks Using Steganography to Deploy Remcos RAT

Ukrainian entities based in Finland have been targeted as part of a malicious campaign distributing a commercial remote access trojan known as Remcos RAT using a malware loader called IDAT Loader. The attack has been attributed to a threat actor tracked by the Computer Emergency Response Team of...

Gamaredon Deploys LitterDrifter USB Worm in Cyber Espionage Operations

Summary: Russian cyber espionage group Gamaredon aka Primitive Bear has been observed utilizing a USB-propagating worm known as LitterDrifter in attacks targeting Ukrainian entities. This group has recently adopted LitterDrifter, a worm written in VBS, designed to spread through removable USB...

Russian Cyber Espionage Group Deploys LitterDrifter USB Worm in Targeted Attacks

Russian cyber espionage actors affiliated with the Federal Security Service FSB have been observed using a USB propagating worm called LitterDrifter in attacks targeting Ukrainian entities. Check Point, which detailed Gamaredon's aka Aqua Blizzard, Iron Tilden, Primitive Bear, Shuckworm, and...

Ransomware: February 2022 review

The Malwarebytes Threat Intelligence team continuously monitors the threat landscape to stay on top of existing and emerging attacks. In this February 2022 ransomware review, we go over some the most successful ransomware incidents based on both open source and dark web intelligence. BlackByte...