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Oct 18, 2021
Grief Ransomware Gang Claims 41 New Victims, Targeting Manufacturers; Municipalities; & Service Companies in U.K. & Europe
Grief Operators Earned an Estimated 8.5 Million British Pounds in Four Months Key Findings: The Grief Ransomware Gang (a rebrand of the DoppelPaymer Ransomware Group) claims to have infected 41 new victims between May 27, 2021—Oct. 1, 2021 with their ransomware.Over half the companies listed on Grief’s underground leak site are based in the U.K. and Europe. The Grief Ransomware Gang appears to…
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eSentire is The Authority in Managed Detection and Response Services, protecting the critical data and applications of 1000+ organizations in 70+ countries from known and unknown cyber threats. Founded in 2001, the company’s mission is to hunt, investigate and stop cyber threats before they become business disrupting events.
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Oct 12, 2021
eSentire Launches MDR with Microsoft Azure Sentinel Extending Response Capabilities Across Entire Microsoft Security Ecosystem
Waterloo, ON – Oct. 12, 2021 -- eSentire, recognized globally as the Authority in Managed Detection and Response (MDR), today announced the expansion of its award-winning MDR services with Microsoft Azure Sentinel, as part of its integration with the complete Microsoft 365 Defender and Azure Defender product suites supporting Microsoft SIEM, endpoint, identity, email and cloud security services.…
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Security advisories — Feb 26, 2019

CVE-2017-7269 IIS 6.0 Buffer Overflow Vulnerability

eSentire has detected active exploit attempts for CVE-2017-7269 (IIS 6.0 Buffer Overflow Vulnerability). This exploit allows for remote code execution among affected devices. Currently, a proof-of-concept version of the exploit is publicly available to attackers that takes advantage of buffer overflow in the WebDAV component of IIS. Due to the publication of exploit code for this vulnerability, eSentire expects the frequency of exploit attempts may intensify in the coming days.

The WebDAV extension is disabled in a default install of IIS 6.0 and must be explicitly enabled in order for the server to be vulnerable. Exploitation attempts can be identified by looking for HTTP requests using the PROPFIND method and containing an IF header with shellcode in it. The vulnerability has not been detected in other versions of Internet Information Services. It was reportedly being exploited as far back as Summer 2016 but was only disclosed to the public on March 27, 2017.

Recommended Actions:

References:

https://nvd.nist.gov/vuln/detail/CVE-2017-7269

http://blog.trendmicro.com/trendlabs-security-intelligence/iis-6-0-vulnerability-leads-code-execution/