| Category | Details |
|---|---|
| Threat Actors | Unknown actor, possibly related to LockBit 3.0 Ransomware campaigns. |
| Campaign Overview | Limited ransomware deployment on two endpoints via TeamViewer access; minimal reconnaissance or lateral movement. |
| Target Regions (Or Victims) | Specific endpoints within organizations; no specific geography mentioned. |
| Methodology | - Initial access via TeamViewer. - Execution of ransomware using DOS batch files and DLLs. - Limited to endpoint activity without lateral spread. |
| Product Targeted | Endpoints running TeamViewer with inadequate monitoring or outdated access management. |
| Malware Reference | Ransomware executable: LB3_Rundll32_pass.dll, associated with LockBit 3.0. |
| Tools Used | - TeamViewer for initial access. - Batch files to execute DLLs. - Ransomware binaries (LB3.exe, ZZZZZZZ). |
| Vulnerabilities Exploited | Misuse of remote access software (TeamViewer) due to weak access controls. |
| TTPs | - Remote access abuse (T1133). - Ransomware execution via command shell (T1059.003). - Data encrypted for impact (T1486). |
| Attribution | Similarities to LockBit 3.0 ransomware as highlighted in VMware’s research from October 2022. |
| Recommendations | - Audit and monitor remote access tools. - Implement strong authentication for administrative access. - Keep endpoint security software updated. |
| Source | Huntress Blog |
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Disclaimer: The above summary has been generated by an AI language model.
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