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Sophos reported that newly emerged Akira ransomware was deployed in two separate April 2023 attacks against organizations in North America, with victims’ files renamed using the .akira extension and ransom notes dropped as fn.txt. The company said the strain appears unrelated to a 2017 ransomware family of the same name. In one intrusion, attackers gained access to an account through MFA bypass activity linked to TOR exit nodes, dumped LSASS memory via comsvcs.dll launched with rundll32.exe, moved laterally over RDP, tampered with Windows Defender, installed AnyDesk, and launched encryption after about seven days in the environment.
In the second case, attackers entered through single-factor VPN access, likely harvested credentials as indicated by MEMORY.DMP, conducted reconnaissance with Advanced IP Scanner and LANSweeper data, used Cloudflare Tunnel and Radmin for remote access, and staged data with WinRAR before deploying ransomware after more than 30 days. Sophos said Akira targeted a relatively narrow set of 26 file extensions, focusing largely on databases, virtual disks, and memory image files while avoiding some file types to preserve system stability, and noted that the slower pace of both operations created multiple opportunities for defenders to detect and disrupt the attacks before encryption.
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In its analysis of the April 2023 incidents, Sophos assessed that the Akira ransomware strain used in those attacks was unrelated to a ransomware family of the same name from 2017. The report also documented differing intrusion methods and tooling across the two incidents.
Sophos reported on two ransomware incidents in North America in April 2023 in which different threat actors deployed the newly emerged Akira ransomware. In both cases, victims' files were encrypted with the ".akira" extension and ransom notes named "fn.txt" were dropped.
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Sophos reported that **Akira** has become a major threat to small and medium-sized organizations across Europe, North America, and Australia, hitting sectors including government, manufacturing, technology, education, consulting, pharmaceuticals, and telecommunications. The group commonly gained initial access through unauthorized logins to **Cisco ASA SSL VPN** and **Cisco AnyConnect** systems that lacked MFA, and in some cases exploited `CVE-2023-20269` and Veeam `CVE-2023-27532`. Researchers said Akira operators routinely stole credentials, moved laterally, established persistence, and attempted to evade defenses before either encrypting systems or stealing data for extortion. Sophos said Akira shifted notably toward **extortion-only** operations beginning in late 2023, exfiltrating data without always deploying ransomware. During intrusions, the actors dumped **LSASS**, extracted `NTDS.dit` and `SYSTEM` hives, targeted Veeam, browser, and KeePass credentials, and used tools including **Mimikatz, AdFind, Advanced IP Scanner, RDP, SMB, wmiexec, PsExec, AnyDesk, WinRAR, rclone, and MEGA**. The report also identified a previously unreported backdoor, **`crome.exe`**, communicating with `170.130.165[.]171`, alongside repeated efforts to disable Sophos and Microsoft Defender protections. When encryption was used, Akira deployed binaries such as `w.exe`, `Lck.exe`, `1.exe`, and `locker.exe`, appended the `.akira` extension, dropped `akira_readme.txt`, deleted Volume Shadow Copies, and in one case encrypted about 65,000 files on a server.
Jun 29, 2026
The **Akira** ransomware group has streamlined attacks to move from initial access to data encryption in under four hours, and in some cases in as little as one hour, according to Halcyon. Since emerging in 2023, the group has compromised hundreds of organizations and is estimated to have collected at least **$245 million** in ransom payments through September 2025. Researchers said Akira gains entry through zero-day exploits, access bought from initial access brokers, VPNs lacking multifactor authentication, and attacks on **Veeam Backup & Replication**, **Cisco VPN**, and **SonicWall** systems. The operation also uses **double extortion**, stealing data before encryption and threatening leaks, while relying on intermittent encryption and dependable decryption to increase the likelihood that victims pay. Separately, ESET identified a South American ransomware campaign that **impersonates Akira** while actually deploying a **Babuk-based** encryptor against Windows users. The malware appends the `.akira` extension to files and drops ransom notes that mimic Akira’s language and Tor negotiation links, raising the risk of false attribution. Researchers said the campaign reflects a broader pattern of threat actors reusing leaked Babuk code and borrowing the branding of established ransomware groups, underscoring the need for defenders to verify attribution through technical analysis rather than ransom-note branding alone.
Jun 29, 2026
U.S. and European cyber authorities released an updated joint advisory detailing the latest tactics, techniques, and procedures (TTPs) used by the Akira ransomware group, which has rapidly become one of the most consequential ransomware threats targeting critical infrastructure and businesses worldwide. The advisory, supported by agencies including CISA, FBI, DoD Cyber Crime Center, HHS, Europol, and law enforcement from France, Germany, and the Netherlands, highlights Akira’s evolution, its double-extortion model, and its targeting of sectors such as manufacturing, education, IT, healthcare, financial, and agriculture. Akira actors exploit vulnerabilities in edge devices, backup servers, and VPN products—including SonicWall (CVE-2024-40766), Cisco, Windows, VMware ESXi, and Veeam—using techniques like credential theft, brute-force attacks, and initial access brokers. They employ remote management tools (AnyDesk, LogMeIn) for defense evasion, uninstall endpoint detection and response (EDR) systems, and leverage custom malware such as POORTRY for privilege escalation. As of late September 2025, Akira has extorted over $244 million in ransom payments, primarily from small- and medium-sized businesses. The group is associated with other threat actors such as Storm-1567, Howling Scorpius, Punk Spider, and Gold Sahara, and may have links to the disbanded Conti group. The FBI ranks Akira among the top five ransomware variants it investigates, citing its significant financial and operational impact on victims. The advisory provides updated indicators of compromise (IOCs), detection methods, and a list of newly exploited vulnerabilities to help organizations defend against Akira’s ongoing campaigns.
Jun 29, 2026