Description
NotificationThis report is provided “as is” for informational purposes only. The Department of Homeland Security (DHS) does not provide any warranties of any kind regarding any information contained herein. The DHS does not endorse any commercial product or service referenced in this bulletin or otherwise. This document is marked TLP:WHITE–Disclosure is not limited. Sources may use TLP:WHITE when information carries minimal or no foreseeable risk of misuse, in accordance with applicable rules and procedures for public release. Subject to standard copyright rules, TLP:WHITE information may be distributed without restriction. For more information on the Traffic Light Protocol (TLP), see http://www.us-cert.gov/tlp. SummaryDescriptionThis report contains information obtained from automated analysis and is not intended to be a complete description of the submitted sample. Results may be limited due to the complexity of the samples, or due to the ability of the samples to defend against automated analysis techniques. If additional information is required, please contact the Cybersecurity and Infrastructure Security Agency (CISA) using the information provided at the end of this report. CISA received one artifact, ff4138ca9119ab0381ad6575f041e633, which appeared to be a crafted RTF document to perform penetration testing for the CVE-2012-0158 vulnerability found in Microsoft Office 2003, 2007 and 2010. It is actually an obfuscated RTF that when opened in Microsoft Word, it connected to nanocoatingindonesia.co.id and attempted to download an executable named Specification.exe, copied it over to word.scr and executed it immediately. At the time of this analysis, the domain returned HTTP 404 not found to the HTTP GET request. For a downloadable copy of IOCs, see MIFR-10079683-1.v2.stix. Files (1)ebbca8bb8e0812f3f66e905a58800a3410ae26b9e1df233741f72021676360dc (ff4138ca9119ab0381ad6575f041e6…) Domains (1)nanocoatingindonesia.co.id IPs (1)114.199.90.60 Findingsebbca8bb8e0812f3f66e905a58800a3410ae26b9e1df233741f72021676360dcTagsCVE-2012-0158droppertrojan Details
Antivirus
YARA RulesNo matches found. ssdeep Matches
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DescriptionFF4138CA9119AB0381AD6575F041E633 is an obfuscated RTF document, appeared to be crafted to perform penetration testing when examined under a hexadecimal editor. Close to the end of file, ASCII data “For pentesting purposes only!” and the MD5 hash value of the RTF were found. However, when the RTF was opened in Microsoft Word, it sent a HTTP GET request to the domain nanocoatingindonesia.co.id in order to download a binary named Specification.exe. If successfully downloaded it would copy Specification.exe to word.scr and immediately execute it. When the RTF was examined under a debugger, the location of word.scr was in the C:Windowssystem32 directory; word.scr ran on the system followed by a system crash and reboot. However, when the RTF was opened without a debugger, word.scr was copied to the same directory where RTF was located at and the system did not crash. At the time of this analysis, nanocoatingindonesia.co.id returned HTTP 404 Not Found to the HTTP GET request for the Specification.exe binary. Screenshots Figure 1 – Figure 2 – Figure 3 – Figure 4 – nanocoatingindonesia.co.idTagscommand-and-control HTTP Sessions
WhoisDomain ID:PANDI-DO696479 Relationships
114.199.90.60Relationships
Relationship Summary
RecommendationsCISA 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.
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”. Contact Information
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/ Document FAQWhat 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 soc@us-cert.gov. 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. |
Revisions
- May 12, 2020: Initial Version
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