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Everest is a Russia-linked, Russian-speaking ransomware and extortion operation active since at least late 2020. It has used double extortion, combining data theft, file encryption, and threats to publish stolen data, and later increasingly emphasized encryptionless data-theft extortion. The operation has also acted as an initial-access broker, reselling footholds in compromised networks and, at times, using data obtained by other actors for extortion.
Everest has targeted organizations in government, healthcare, telecommunications, finance, manufacturing, transportation, and other sectors across North America, Europe, and Asia. Reported intrusion methods include phishing, exploitation of vulnerable public-facing applications, and use of stolen credentials.
Observed Everest ransomware payloads are .NET-based and use obfuscation and anti-analysis protections. The encryptor can terminate security and analysis tools, disable Windows security controls, delete shadow copies and backup-related data, remove anti-ransomware protections, and self-delete after execution. It uses geofencing to avoid systems configured for Commonwealth of Independent States locales and can use Wake-on-LAN broadcasts to activate sleeping systems before encryption. File encryption uses symmetric cryptography with asymmetric protection of encryption keys; larger files may be only partially encrypted to accelerate impact across large data volumes. Data theft, where conducted, appears to occur through tooling separate from the encryptor.
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2 distinct threat actors attributed by public researchers. Open in Mallory to see the full evidence chain and overlapping campaigns.
"This latest blog documents the TTPs employed by a group who were observed deploying Everest ransomware during a recent incident response engagement."
"This latest blog documents the TTPs employed by a group who were observed deploying Everest ransomware during a recent incident response engagement."
21 distinct techniques documented for this family, organized by ATT&CK tactic.
Its usual playbook involves exploiting vulnerable public facing applications, phishing campaigns, and abusing stolen credentials to gain remote access.
The encryptor itself is a .NET executable protected with ConfuserEx, a tool that strips identifying watermarks and adds anti tampering layers before analysis begins.
From there, the malware disables Windows Defender’s Controlled Folder Access, deletes shadow copies, wipes backup related files... The ransomware wraps up by dropping a note called EVERESTRANSOMWARE.txt into every affected folder and on the desktop, before triggering a delayed self deletion routine to erase its own tracks.
One of the more unusual traits AttackIQ flagged is the ransomware’s use of Wake on LAN broadcasts, sent to force sleeping machines on the network to power up so they too can be encrypted.
Security teams should expand emulation coverage to include Wake on LAN broadcasts, mapped drive enumeration, and active network connection discovery, since these behaviors reflect genuine attacker movement rather than isolated test conditions.
"The group alleges it obtained approximately 90GB of internal data... the data is described as a database and internal company documentation."
"Everest Ransomware Says It Breached Brazilian Energy Giant Petrobras" / "demanding contact through qTox"
Despite boasting about stealing a full terabyte of data from a victim organization, the actual malware sample used in the intrusion contains no code capable of exfiltrating anything at all.
In the aftermath of the Colonial Pipeline ransomware attack, the underground cybercrime ecosystem is reshuffling... The first to go was Darkside, the ransomware gang that orchestrated the Colonial Pipeline attack.
5 indicators attributed across vendor reports, sandbox runs, and researcher write-ups. Full values are available in Mallory.
IPs, domains, and DNS infrastructure linked to this family.
File hashes (MD5, SHA-1, SHA-256) from samples and reports.
57 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Everest is identified as the ransomware group responsible for the reported attack against Rise UP.
Everest is a Russian-speaking cybercrime group operating since around December 2020 that conducts ransomware and extortion activity. In this incident, it allegedly accessed technical data via a supplier platform using compromised credentials and attempted to extort Stadler Rail. The content also notes Everest has used both encryptionless extortion and double extortion, and has expanded into initial access brokering and recruiting corporate insiders.
Everest is described as a ransomware operation active since 2020 that shifted from network encryption to data theft and extortion. The group has also operated as an initial access broker and has used stolen data to conduct extortion campaigns.
Everest is described as a threat group that emerged in 2020 as a ransomware operation but later abandoned network encryption in favor of data theft and extortion, threatening victims with leaking stolen data unless a ransom is paid. The group has also acted as an initial access broker by selling network access to other threat actors.
Match every observed IP, domain, and hash against your live telemetry.
Named campaigns wielding this family, with evidence pinned to each claim.
CVEs this family uses for access and lateral movement.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Every documented technique, ranked by evidence weight.
Reddit, Mastodon, and CTI community discussion around this family.