hacker-news · Crawled Sep 11, 2026
PaperCut Attacker Uses Hundreds of AI Agents to Compromise 440+ Instances
4 IoCs 3 Malware
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AI Summary
A suspected Russian-speaking threat actor has exploited CVE-2026-81578 and CVE-2026-82078, a vulnerability chain in PaperCut NG/MF involving authentication bypass and remote code execution, to compromise at least 440 instances across 395 organizations in 48 countries. The attacker used AI agents powered by OpenAI Codex and DeepSeek, along with offensive tools like Mimikatz and Impacket, to automate exploitation and post-compromise activities including credential harvesting and domain reconnaissance. The campaign targeted primarily the education sector and demonstrated rapid lateral movement, with some attacks achieving domain administrator access in under seven minutes. The actor’s ultimate objectives remain unclear, though activity suggests potential initial access brokering or preparation for follow-on attacks such as data theft or ransomware.
AI-extracted · verify before operational use
Extracted Entities 3 found
Indicators of Compromise 4 extracted
MITRE ATT&CK TTPs 81 techniques
T1001.001 Junk Data · Command And Control T1003 OS Credential Dumping · Credential Access T1003.001 LSASS Memory · Credential Access T1003.002 Security Account Manager · Credential Access T1018 Remote System Discovery · Discovery T1021 Remote Services · Lateral Movement T1021.001 Remote Desktop Protocol · Lateral Movement T1021.002 SMB/Windows Admin Shares · Lateral Movement T1021.003 Distributed Component Object Model · Lateral Movement T1027 Obfuscated Files or Information · Defense Evasion T1033 System Owner/User Discovery · Discovery T1046 Network Service Discovery · Discovery T1048 Exfiltration Over Alternative Protocol · Exfiltration T1048.002 Exfiltration Over Asymmetric Encrypted Non-C2 Protocol · Exfiltration T1053 Scheduled Task/Job · Execution T1053.005 Scheduled Task · Execution T1055 Process Injection · Defense Evasion T1055.003 Thread Execution Hijacking · Defense Evasion T1057 Process Discovery · Discovery T1059 Command and Scripting Interpreter · Execution T1059.001 PowerShell · Execution T1069 Permission Groups Discovery · Discovery T1070.001 Clear Windows Event Logs · Defense Evasion T1070.004 File Deletion · Defense Evasion T1071.001 Web Protocols · Command And Control T1071.003 Mail Protocols · Command And Control T1074 Data Staged · Collection T1074.001 Local Data Staging · Collection T1078 Valid Accounts · Defense Evasion T1078.001 Default Accounts · Defense Evasion T1082 System Information Discovery · Discovery T1083 File and Directory Discovery · Discovery T1086 T1086 T1087 Account Discovery · Discovery T1087.001 Local Account · Discovery T1087.002 Domain Account · Discovery T1090.001 Internal Proxy · Command And Control T1090.003 Multi-hop Proxy · Command And Control T1098 Account Manipulation · Persistence T1098.001 Additional Cloud Credentials · Persistence T1105 Ingress Tool Transfer · Command And Control T1110 Brute Force · Credential Access T1110.003 Password Spraying · Credential Access T1112 Modify Registry · Defense Evasion T1114 Email Collection · Collection T1129 Shared Modules · Execution T1133 External Remote Services · Persistence T1140 Deobfuscate/Decode Files or Information · Defense Evasion T1190 Exploit Public-Facing Application · Initial Access T1203 Exploitation for Client Execution · Execution T1204.002 Malicious File · Execution T1210 Exploitation of Remote Services · Lateral Movement T1212 Exploitation for Credential Access · Credential Access T1217 Browser Information Discovery · Discovery T1219 Remote Access Software · Command And Control T1222 File and Directory Permissions Modification · Defense Evasion T1222.001 Windows File and Directory Permissions Modification · Defense Evasion T1482 Domain Trust Discovery · Discovery T1484 Domain or Tenant Policy Modification · Defense Evasion T1484.001 Group Policy Modification · Defense Evasion T1485 Data Destruction · Impact T1486 Data Encrypted for Impact · Impact T1489 Service Stop · Impact T1490 Inhibit System Recovery · Impact T1537 Transfer Data to Cloud Account · Exfiltration T1543.003 Windows Service · Persistence T1547.001 Registry Run Keys / Startup Folder · Persistence T1557 Adversary-in-the-Middle · Credential Access T1558.003 Kerberoasting · Credential Access T1562.001 Disable or Modify Tools · Defense Evasion T1566 Phishing · Initial Access T1569.002 Service Execution · Execution T1570 Lateral Tool Transfer · Lateral Movement T1571 Non-Standard Port · Command And Control T1572 Protocol Tunneling · Command And Control T1573 Encrypted Channel · Command And Control T1573.001 Symmetric Cryptography · Command And Control T1574 Hijack Execution Flow · Persistence T1588 Obtain Capabilities · Resource Development T1589 Gather Victim Identity Information · Reconnaissance T1614 System Location Discovery · Discovery