Conti Technical Intelligence Dossier

Executive Summary & Threat Architecture

Conti is arguably the most aggressive and professionally structured ransomware syndicate in cybersecurity history, operated by the Russian cybercrime group Wizard Spider from early 2020 until its public splintering in mid-2022. Emerging as the operational successor to Ryuk, Conti operated an enterprise-grade Ransomware-as-a-Service (RaaS) model backed by full-time software developers, HR recruiters, OSINT researchers, and negotiators. Conti engineered a remarkably fast multi-threaded encryption engine: utilizing 32 concurrent worker threads, it achieves rapid parallel encryption using ChaCha20 stream cipher for data blocks combined with an embedded 4096-bit RSA public key to protect the session keys. Conti was staged via elite initial-access loaders, including TrickBot, BazarLoader, and Bumblebee, and weaponized Active Directory vulnerabilities such as Zerologon (CVE-2020-1472) and PrintNightmare (CVE-2021-34527) for rapid enterprise-wide privilege escalation. The group pioneered aggressive double-extortion tactics, leaking stolen corporate data on their 'Conti.News' dark web portal. Conti famously attacked over 1,000 organizations, including healthcare networks, law enforcement agencies, and the national infrastructure of Costa Rica, prompting the Costa Rican government to declare a national state of emergency in May 2022. Following their public pledge of allegiance to the Russian state in February 2022, an anonymous researcher leaked thousands of internal Jabber chat logs ('ContiLeaks'), exposing their corporate organizational chart, bitcoin wallets, and source code. CISA published Alert AA21-265A detailing Conti technical indicators and defensive mitigations.

Observed Threat Aliases: Conti Ransomware, Conti.News, Trojan.Ransom.Conti, Win32/Conti, Wizard Spider Conti

Ancestry & Lineage Tracking

Derived From / Upstream Ancestry: ryuk, hermes

Documented Downstream Variants: conti_v1, conti_v2, conti_v3, blackcat_alphv_offshoot, quantum_ransomware

Weaponized Vulnerabilities & Exploitation Topology

Documented common vulnerabilities and exposures (CVEs) weaponized by Conti operators for initial execution, sandbox evasion, or SYSTEM-level kernel privilege escalation:

→ Explore all 77 exploited vulnerabilities on the SystemHelpDesk CVE Threat Matrix Hub.

MITRE ATT&CK® Tactical Tradecraft

Tactics, techniques, and procedures (TTPs) systematically mapped across real-world intrusion kill-chains:

→ Inspect the complete 226-technique matrix on the MITRE ATT&CK Defense Hub.

Indicators of Compromise (IOCs) & Forensic Artifacts

Curated indicators for retrospective threat hunting across SIEM and EDR platforms:

Initial Delivery Vectors

• Delivered as secondary payload via TrickBot, BazarLoader, and Bumblebee initial access
• Spear-phishing emails containing malicious Office attachments or ISO container files
• Exploitation of Active Directory vulnerabilities Zerologon CVE-2020-1472 and PrintNightmare CVE-2021-34527

Host Persistence & Execution Hooks

• Service creation under Windows Service Control Manager with randomized alphanumeric names
• HKLM\Software\Microsoft\Windows\CurrentVersion\Run entry pointing to dropped payload
• Automated scheduled tasks executing with NT AUTHORITY\SYSTEM privileges

Reference File Hashes (SHA-256)

• 2b6a5db21d00f7e44a42e5d7db69b466ea2084c55bc66c5d1e2e1329c31b312b
• a17387f5df2307ef086915091219b671a172776c59b67195721118182969b761
• 5c84dfc8df34e64ff476bf43a8ce90150e7b95204481ae515efb64dd9bf0e20e