Threats Tagged 'akira'

An Akira ransomware affiliate gained initial access through an exposed SonicWall VPN without multi-factor authentication via credential spraying. After compromising the domain controller, the attacker performed Active Directory enumeration, collected and exfiltrated data using WinRAR and s5cmd to cloud storage. The affiliate employed a novel evasion technique by rebooting the victim host into Safe Mode with Networking to disable EDR and antivirus protection. AnyDesk was installed as a persistent remote access mechanism. However, the Safe Mode environment caused the ransomware to fail due to out-of-virtual-memory errors, preventing encryption. Despite the encryption failure, the attacker had already exfiltrated credentials and file shares, enabling extortion through data leak threats. This marks the first observed instance of Akira affiliates using Safe Mode boot as an anti-EDR technique.

In July 2025, threat actors compromised organizations through SEO poisoning campaigns targeting users searching for legitimate IT management tools. Users downloading trojanized installers for ManageEngine OpManager received Bumblebee malware, granting initial access. The attackers exploited the fact that users executing these IT tools were privileged administrators, enabling rapid lateral movement to domain controllers. They dumped credentials using wbadmin, created backdoor accounts with enterprise admin privileges, and installed RustDesk for persistent access. AdaptixC2 beacons were deployed for command and control. The threat actors conducted extensive reconnaissance, dumped LSASS memory across multiple systems, attempted Veeam credential theft, and exfiltrated data via SFTP using FileZilla. The intrusion culminated in Akira ransomware deployment across both root and child domains within 44 hours, with subsequent re-encryption two days later affecting the child domain.

Fox Tempest is a financially motivated threat actor operating a malware-signing-as-a-service (MSaaS) business used by cybercriminals to distribute malicious code, including ransomware. The actor abuses Microsoft Artifact Signing to generate fraudulent code-signing certificates, allowing malware to evade security controls. Fox Tempest created over a thousand certificates and established hundreds of Azure tenants to support operations. Microsoft revoked over one thousand certificates and disrupted the service in May 2026 through the Digital Crimes Unit. The operation enabled ransomware deployment including Rhysida by threat actors like Vanilla Tempest, and distributed malware families including Oyster, Lumma Stealer, and Vidar. The MSaaS was available through signspace[.]cloud, charging between $5000-$9000 USD. Attacks impacted healthcare, education, government, and financial services sectors globally.

A recent malware campaign uses SEO poisoning on Bing to distribute a trojanized Ivanti Pulse Secure VPN client via lookalike domains. Users are tricked into downloading a malicious MSI installer that steals VPN credentials from the connectionstore.dat file. Stolen credentials are exfiltrated to a command and control server hosted on Azure infrastructure. The attack employs signed executables and referrer-based conditional content delivery to evade detection. This credential theft technique has been linked to subsequent Akira ransomware deployments. Organizations are advised to implement multi-factor authentication, conduct user awareness training, and monitor for suspicious network and endpoint activity. No CVE or known exploits in the wild are reported yet. The threat poses a medium severity risk due to credential compromise and potential ransomware follow-on attacks. European organizations using Ivanti Pulse Secure VPN are at risk, especially in countries with high adoption of this VPN solution and critical infrastructure sectors.

MediumMalwareGermanyFranceNetherlands+5#ivanti#credential theft#trojanized installer

A threat actor exploited a SonicWall VPN vulnerability to gain initial access to an organization's network. The attacker discovered plaintext Huntress recovery codes on a user's desktop, allowing them to bypass MFA and access the Huntress portal. They then proceeded to close active incident reports and uninstall Huntress agents from compromised systems. This incident highlights the critical importance of securely storing credentials and recovery codes. The attacker also exported certificates from the domain controller, potentially for further privilege escalation or persistence. The compromise was detected by Huntress' Security Operations Center, which initiated a mass isolation response to contain the threat. This case emphasizes the need for proper credential management and the risks associated with storing sensitive information in easily accessible plaintext files.

MediumMalwareGermanyUnited KingdomFrance+4#credential theft#ransomware#certificate export

Akira affiliates have been observed exploiting two common drivers as part of a suspected AV/EDR evasion effort following initial access involving SonicWall abuse. The drivers, rwdrv.sys and hlpdrv.sys, are being used to facilitate AV/EDR evasion or disablement through a Bring Your Own Vulnerable Driver (BYOVD) exploitation chain. This behavior has been prevalent in recent Akira ransomware incident response cases. The campaign may be driven by an unreported zero-day vulnerability in SonicWall VPNs. Defenders are advised to harden SonicWall VPNs, implement recommended mitigations, and use provided YARA rules for detection and response to pre-ransomware activity.

MediumMalwareGermanyUnited KingdomFrance+7#zero-day#akira#vpn

A sophisticated cyber attack campaign leveraged SEO poisoning to compromise organizations through trojanized IT management tool installers. The attack began when users searching for ManageEngine OpManager were directed to a malicious website, downloading a compromised MSI file that installed Bumblebee malware. The threat actors then deployed AdaptixC2 beacons, performed internal reconnaissance, created privileged accounts, and installed RustDesk for persistence. They exfiltrated data via SFTP and ultimately deployed Akira ransomware across the network. The campaign affected multiple organizations, with time to ransomware ranging from 9 to 44 hours after initial access. The attackers used various tools and techniques for lateral movement, credential theft, and defense evasion.

MediumCampaignGermanyFranceUnited Kingdom+5#rustdesk#data exfiltration#ransomware

A coordinated threat campaign has been identified leveraging SEO poisoning to distribute Bumblebee malware via trojanized installers of IT management tools. The campaign targets users searching for legitimate software like ManageEngine OpManager. Upon execution, Bumblebee establishes initial access, enabling lateral movement, credential dumping, deployment of remote access tools, and data exfiltration. The intrusions often end with the deployment of Akira ransomware, resulting in severe operational disruptions. Multiple organizations have been impacted, with various security teams reporting consistent patterns of compromise.

MediumMalwareGermanyFranceUnited Kingdom+4#lateral movement#bumblebee#seo poisoning

A potential zero-day vulnerability in SonicWall VPNs is being actively exploited to bypass MFA and deploy ransomware. The attack chain begins with a breach of the SonicWall appliance, followed by post-exploitation techniques including enumeration, detection evasion, lateral movement, and credential theft. Attackers quickly gain administrative access, establish command and control, move laterally, disable defenses, and deploy Akira ransomware. The threat actors use a mix of automated scripts and manual activity, abusing privileged accounts and utilizing various tools for persistence and data exfiltration. Immediate action is advised, including disabling SonicWall VPN access or severely restricting it, auditing service accounts, and hunting for malicious activity using provided indicators of compromise.

MediumMalwareGermanyFranceUnited Kingdom+7#sonicwall#vpn#credential theft