Cyber Incident Victim: Wizard Spider
Date:
Sep 2022
Location:
Russia
Summary
Former Conti ransomware gang members' Cobalt Strike servers were disrupted by distributed denial-of-service attacks flooding their infrastructure with anti-Russia messages, including usernames and computer names referencing opposition to the Ukraine conflict. The high-volume traffic overloaded the Java-based TeamServer application at a rate of approximately two messages per second, hindering ongoing ransomware operations conducted under new groups like Quantum, Hive, and BlackCat. This disruption mirrored prior denial-of-service tactics employed against other ransomware entities, potentially indicating retaliatory actions against the group's alignment with Russian interests.
| CIA Posture | Motives | Tactics, Techniques & Procedures |
|---|---|---|
| Available to members | 2 motives | 2 techniques |
| Threat Actors | Type | Location |
|---|---|---|
| 0 actors | Available to members | Available to members |
Description
In September 2022, unidentified actors launched distributed denial-of-service (DDoS) attacks against Cobalt Strike servers operated by former members of the Conti ransomware group. The Conti ransomware gang had deactivated its internal infrastructure in May 2022, with members dispersing to other ransomware operations including Quantum, Hive, and BlackCat. These former Conti affiliates continued utilizing the same Cobalt Strike command-and-control infrastructure for new ransomware campaigns. Attackers flooded the Java-based TeamServer application with connection requests bearing politically charged usernames and computer names. Specifically, they employed the username "Stop Putin!" across multiple systems while setting computer names to messages such as "Stop the war!", "15000+ dead Russian soldiers!", and "Be a Russian patriot!". According to Advanced Intelligence CEO Vitali Kremez, these messages hit targeted servers at approximately two per second, overwhelming the Cobalt Strike infrastructure's processing capacity. The attack methodology functionally mimicked a denial-of-service condition by exhausting server resources through high-volume malicious traffic.
The sustained message bombardment disrupted operational activities associated with the ex-Conti infrastructure, though specific impacted ransomware operations were not detailed. Attackers appeared to selectively target infrastructure linked to former Conti members, potentially as retaliation for the group's pro-Russia alignment during geopolitical conflicts. While the actors' identities remained unconfirmed, their tactics mirrored previous DDoS campaigns against LockBit ransomware infrastructure that had temporarily disabled data leak sites. The incident demonstrated the viability of denial-of-service techniques as counter-ransomware measures by directly degrading attackers' operational capabilities. No defensive responses from the targeted ransomware operators or law enforcement actions were documented in available reporting. The disruption highlighted ongoing conflicts within cybercriminal ecosystems while illustrating how infrastructure dependencies create vulnerabilities for ransomware groups.