March 22, 2024
Severity High Analysis Summary Ducktail Malware is a malicious program designed by hackers to infiltrate computers and networks globally. Ducktail malware is typically delivered through a […]
Rewterz Threat Alert – Hive Ransomware – Active IOCs
August 10, 2022
Rewterz Threat Alert – Nanocore Rat – Active IOCs
August 10, 2022
Rewterz Threat Alert – Hive Ransomware – Active IOCs
August 10, 2022
Rewterz Threat Alert – Nanocore Rat – Active IOCs
August 10, 2022
Severity
High
Analysis Summary
A zero-day vulnerability in Microsoft Office is being actively exploited in the wild, and while there isn’t currently a patch, the software giant has published workarounds to thwart attacks. CVE-2022-30190, also known as “Follina,” is a remote code execution (RCE) vulnerability affecting the Microsoft Support Diagnostic Tool (MSDT) in Windows.
CVE-2022-30190
Microsoft Windows could allow a remote attacker to execute arbitrary code on the system, caused by a flaw in the Support Diagnostic Tool (MSDT) component. By persuading a victim to open specially-crafted content, an attacker could exploit this vulnerability to execute arbitrary code on the system. Microsoft Support Diagnostics Tool (MSDT) is used by support professionals for troubleshooting.
According to the researcher, maldoc retrieves an HTML file from a server using Word’s template feature. The malicious payload is then obtained via the “ms-msdt: //” URI scheme.
The attackers who successfully exploit this vulnerability can run arbitrary code with the privileges of the calling application. The attacker can then install programs, view, change, delete data, or create new accounts in the context allowed by the user’s permissions.
Here are the workaround guidance shared by Microsoft:
Impact
- Code Execution
- Privilege Escalation
Indicators Of Compromise
MD5
- e5aba83ca9c44b488e086ef7c1c1baea
- ea56f3bc0d8679c8172c953a394d485c
- 72f17f25222a3319192dd9ad0603668d
SHA-256
- 001b51f7860f6c8fb7a68996c611cf7e0e39e39d0d355a2837b62d32620d670b
- 0e6b2164761748eb35f07eb1d926ab631ad317a2014ba55229cd934333c895e9
- 2c5754a3938156d818d4d40fee29fce22bcae4135b18c4a9078c871ef8325763
SHA-1
- 68ca9998bc3fc10be91c04734ec7dce82cd4aeb0
- 6d5e07612e8d2c9f68810e0d3d8e471b1b1fbdcc
- 17023680dd053d7e70c714b2234b66c39ba615a9
Remediation
- Block all threat indicators at your respective controls.
- Search for Indicator of compromise (IOCs) in your environment utilizing your respective security controls
- Use Microsoft Automatic Update to apply the appropriate patch for your system, or the Microsoft Security Update Guide
- to search for available patches.
- Customers using Microsoft Defender Antivirus should turn-on cloud-delivered protection and automatic sample
- submission.
- Customers that use Microsoft Defender for Endpoint can set the “BlockOfficeCreateProcessRule” attack surface
- reduction rule, which prevents Office apps from generating child processes.