The Malware tag covers malware families, infrastructure analysis, incident impact, disruption efforts, and defensive guidance to reduce cybersecurity risk.
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Background for this topic.
Malware is software intentionally created or modified to perform unauthorized or harmful actions on a computer, device, or network. The term covers distinct families and functions, including viruses, worms, trojans, spyware, botnet clients, and ransomware; a single sample may combine several capabilities. Its behavior—not its label—determines the security concern: it may execute code, persist, alter or encrypt data, steal credentials, or provide unauthorized remote access.
For practitioners, malware reporting is most useful when it identifies the family or tool conservatively and provides evidence such as affected platforms, samples, infrastructure, or observed behavior. Defenses include promptly patching vulnerable software, restricting execution and privileges, monitoring endpoints and networks, maintaining tested backups, and isolating suspected systems for analysis. Detection should use behavior and verified indicators rather than names alone, since variants change. If malware processes personal or regulated data, investigations should also address privacy, evidence preservation, and applicable reporting obligations.
The Aberebot banking trojan appears to have returned, as its author is actively promoting a new version of the tool on dark web markets and forums. [...]
As their cities suffered more intense bombardment by Russian military forces this week, Ukrainian Internet users came under renewed cyberattacks, with one Internet company providing service there saying they blocked ten times the normal number of phishing and malware attacks targeting Ukrainians.
The credential-stealing trash panda is using the chat app to store and update C2 addresses as crooks find creative new ways to distribute the malware.
DDoS tools may be booby-trapped, warns Cisco
The stealthy BazarBackdoor malware is now being spread via website contact forms rather than typical phishing emails to evade detection by security software. [...]
A new malware distribution campaign has surfaced, taking advantage of the willingness of a large number of people to support Ukraine in the ongoing cyber warfare to infect them with info-stealers. [...]
Be careful when downloading a tool to cyber-target Russia: It could be an infostealer wolf dressed in sheep's clothing that grabs your cryptocurrency info instead.
The Iranian state-sponsored threat actor known as MuddyWater has been attributed to a new swarm of attacks targeting Turkey and the Arabian Peninsula with the goal of deploying remote access trojans (RATs) on compromised systems
The ever-shifting, ever-more-powerful malware is now hijacking email threads to download malicious DLLs that inject password-stealing code into webpages, among other foul things.
Yaroslav Vasinskyi, a Ukrainian national, linked to the Russia-based REvil ransomware group has been extradited to the U.S. to face charges for his role in carrying out the file-encrypting malware attacks against several companies, including Kaseya last July
Defendant accused of selling stolen credit card data obtained using malware
HP has disclosed 16 high-impact UEFI firmware vulnerabilities that could allow threat actors to infect devices with malware that gain high privileges and remain undetectable by installed security software. [...]
We analyze RURansom, a malware variant discovered to be targeting Russia. Originally suspected to be a ransomware because of its name, analysis reveals RURansom to be a wiper.
Nvidia certificates are being used to sign malware, enabling malicious programs to pose as legitimate and slide past security safeguards on Windows machines.
Cyber-attacks keep increasing and evolving but, regardless of the degree of complexity used by hackers to gain access, get a foothold, cloak their malware, execute their payload or exfiltrate data, their attack will begin with reconnaissance. They will do their utmost to uncover exposed assets and probe their target's attack surface for gaps that can be used as entry points
The threat actor behind a nascent Android banking trojan named SharkBot has managed to evade Google Play Store security barriers by masquerading as an antivirus app