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One Microsoft Word Open Extensible Markup Language (XML) Format Document file (DOCX file) was submitted for analysis. The file attempts to download a Microsoft Word template from a Uniform Resource Locator (URL). The URL is to a private IP address and the file was not available for analysis.
For a downloadable copy of IOCs, see MAR-10285677-3.v1.stix.
Submitted Files (1)
||Zip archive data, at least v1.0 to extract
|Microsoft Security Essentials
No matches found.
No matches found.
This file is a Microsoft Word DOCX file. One of the XML files, "settings.xml.rels" (Figure 2), contains a target for a template located at the following URL:
If a user opens the document in Word, the document entices the user to "Enable Macros". This technique is used to trick the user, because the document does not contain macros and will attempt to load the template from the external network location. The URL is to a private IP address and the file was not available for analysis.
Figure 1 - Screenshot of the DOCX file.
Figure 2 - This XML file contains an external location to a URL to download a suspicious Microsoft Word template.
NetRange: 192.168.0.0 - 192.168.255.255
Parent: NET192 (NET-192-0-0-0-0)
NetType: IANA Special Use
Organization: Internet Assigned Numbers Authority (IANA)
Comment: These addresses are in use by many millions of independently operated networks, which might be as small as a single computer connected to a home gateway, and are automatically configured in hundreds of millions of devices. They are only intended for use within a private context and traffic that needs to cross the Internet will need to use a different, unique address.
Comment: These addresses can be used by anyone without any need to coordinate with IANA or an Internet registry. The traffic from these addresses does not come from ICANN or IANA. We are not the source of activity you may see on logs or in e-mail records. Please refer to http://www.iana.org/abuse/answers
Comment: These addresses were assigned by the IETF, the organization that develops Internet protocols, in the Best Current Practice document, RFC 1918 which can be found at:
OrgName: Internet Assigned Numbers Authority
Address: 12025 Waterfront Drive
Address: Suite 300
City: Los Angeles
The file attempts to download a potential Microsoft Word template from the private IP address.
CISA recommends that users and administrators consider using the following best practices to strengthen the security posture of their organization's systems. Any configuration changes should be reviewed by system owners and administrators prior to implementation to avoid unwanted impacts.
- Maintain up-to-date antivirus signatures and engines.
- Keep operating system patches up-to-date.
- Disable File and Printer sharing services. If these services are required, use strong passwords or Active Directory authentication.
- Restrict users' ability (permissions) to install and run unwanted software applications. Do not add users to the local administrators group unless required.
- Enforce a strong password policy and implement regular password changes.
- Exercise caution when opening e-mail attachments even if the attachment is expected and the sender appears to be known.
- Enable a personal firewall on agency workstations, configured to deny unsolicited connection requests.
- Disable unnecessary services on agency workstations and servers.
- Scan for and remove suspicious e-mail attachments; ensure the scanned attachment is its "true file type" (i.e., the extension matches the file header).
- Monitor users' web browsing habits; restrict access to sites with unfavorable content.
- Exercise caution when using removable media (e.g., USB thumb drives, external drives, CDs, etc.).
- Scan all software downloaded from the Internet prior to executing.
- Maintain situational awareness of the latest threats and implement appropriate Access Control Lists (ACLs).
Additional information on malware incident prevention and handling can be found in National Institute of Standards and Technology (NIST) Special Publication 800-83, "Guide to Malware Incident Prevention & Handling for Desktops and Laptops".
CISA continuously strives to improve its products and services. You can help by answering a very short series of questions about this product at the following URL: https://us-cert.gov/forms/feedback/
What is a MIFR? A Malware Initial Findings Report (MIFR) is intended to provide organizations with malware analysis in a timely manner. In most instances this report will provide initial indicators for computer and network defense. To request additional analysis, please contact CISA and provide information regarding the level of desired analysis.
What is a MAR? A Malware Analysis Report (MAR) is intended to provide organizations with more detailed malware analysis acquired via manual reverse engineering. To request additional analysis, please contact CISA and provide information regarding the level of desired analysis.
Can I edit this document? This document is not to be edited in any way by recipients. All comments or questions related to this document should be directed to the CISA at 1-888-282-0870 or firstname.lastname@example.org.
Can I submit malware to CISA? Malware samples can be submitted via three methods:
CISA encourages you to report any suspicious activity, including cybersecurity incidents, possible malicious code, software vulnerabilities, and phishing-related scams. Reporting forms can be found on CISA's homepage at www.us-cert.gov.