Recam Redux - DeConfusing ConfuserEx

This post is authored by Holger Unterbrink and Christopher MarczewskiOverviewThis report shows how to deobfuscate a custom .NET ConfuserEx protected malware. We identified this recent malware campaign in our Advanced Malware Protection AMP telemetry. Initial infection is via a malicious Word...

Apache OpenOffice DOC File Parsing Remote Code Execution Vulnerability

Apache OpenOffice is open and free word processing software. The OpenOffice Writer DOC file parser and WW8Fonts constructor handles DOC file vulnerabilities, allowing remote attackers to exploit the vulnerability by submitting a special file and tricking the user into parsing it, which can crash...

Oracle OIT ContentAccess libvs_word+63AC Code Execution Vulnerability(CVE-2016-3592)

Description Partially controlled memory write vulnerability exists in Mac Word file format parsing code of Oracle Outside In Technology Content Access SDK. An unchecked pointer arithmetic leads to an out of bounds memory overwrite resulting in code execution. Tested Versions Oracle Outside In...

Attackers Use Undocumented MS Office Feature to Leak System Profile Data

An undocumented Microsoft Office feature allows attackers to gather sensitive configuration details on targeted systems simply by tricking recipients to open a specially crafted Word document—no VBA macros, embedded Flash objects or PE files needed. The undocumented feature is being used by...

Threat Analysis: Word Documents with Embedded Macros Leveraging Emotet Trojan

Many customers have recently asked how Carbon Black's solutions detect macros and droppers specifically referencing Emotet dropper files. Customers often say that macros and droppers are an ongoing problem in their environments. They are also seen day-to-day by most practitioners. The analysis...

Modified Zyklon and plugins from India

IntroductionStreams of malicious emails Talos inspects every day usually consist of active spamming campaigns for various ransomware families, phishing campaigns and the common malware family suspects such as banking Trojans and bots.. It is however often more interesting to analyze campaigns...

Office discovered zero vulnerabilities hackers can use the Word document to install malicious software-vulnerability warning-the black bar safety net

According to foreign media reports, recently a period of time, you when opening a Word document may have to be careful because the security company MCAfee researchers in Microsoft Office software found in a zero vulnerabilities, hackers can use it quietly in your computer system to install...

Latest Tax Scams Include Phishing Lures, Malware

Microsoft warned Monday this year’s crop of tax scams are using social engineering attacks based on fear to spread Zdowbot and Omaneat banking Trojans and collect personal info via spoofed tax sites linked to from phishing campaigns. The warning comes with less than a month before the April 18 ta...

SSL Enabled Basic Auth Credential Harvester: phishery

An SSL Enabled Basic Auth Credential Harvester with a Word Document Template URL Injector Phishery is a Simple SSL Enabled HTTP server with the primary purpose of phishing credentials via Basic Authentication. Phishery also provides the ability easily to inject the URL into a .docx Word document...

Malware Evades Detection with Novel Technique

Researchers have found a new strain of document-based macro malware that evades discovery by lying dormant when it detects a security researcher’s test environment. The malware, according to researcher Caleb Fenton with security firm SentinelOne, evades detection simply by counting the number of...

Microsoft Office Memory Corruption (MS16-099: CVE-2016-3316)

A memory corruption vulnerability has been reported in Microsoft Word. The application fails to properly handle certain objects in memory when parsing specially crafted files with a large sprmSDyaTop value. A remote, unauthenticated attacker can exploit this vulnerability by enticing a user to op...

Oracle OIT ImageExport libvs_bmp BMP BI_RLE8 Width Code Execution Vulnerability

Talos Vulnerability Report TALOS-2016-0160 Oracle OIT ImageExport libvsbmp BMP BIRLE8 Width Code Execution Vulnerability July 19, 2016 Description A vulnerability in libvseshr can lead to remote code execution while parsing a specially crafted Word document containing a reference to Escher drawin...

Cerber: Analyzing a Ransomware Attack Methodology To Enable Protection

Ransomware is a common method of cyber extortion for financial gain that typically involves users being unable to interact with their files, applications or systems until a ransom is paid. Accessibility of cryptocurrency such as Bitcoin has directly contributed to this ransomware model. Based on...

The vulnerability of the Oracle Fusion Middleware software platform, which allows a perpetrator to trigger a service failure

The vulnerability of the Oracle Outside In Technology component of the Oracle Fusion Middleware software is caused by buffer overflow in the stack. Exploiting this vulnerability allows a malicious actor to cause a service failure using a specially created DOC file...

Scientific Linux Security Update : libreoffice on SL6.x i386/x86_64 (20151214)

It was discovered that LibreOffice did not properly restrict automatic link updates. By tricking a victim into opening specially crafted documents, an attacker could possibly use this flaw to disclose contents of files accessible by the victim. CVE-2015-4551 An integer underflow flaw leading to a...

Microsoft Office 2007 OneTableDocumentStream Invalid Object Exploit

Microsoft Office 2007 suffers from a OneTableDocumentStream invalid object vulnerability. Source: https://code.google.com/p/google-security-research/issues/detail?id=171&can=1 The following access violation was observed in Microsoft Office 2007 Word document: 8c0.e68: Access violation - code...

Microsoft Office 2007 Malformed Document Stack-Based Buffer Overflow Exploit

Microsoft Office 2007 suffers from a stack-based buffer overflow vulnerability when handling a malformed document. Source: https://code.google.com/p/google-security-research/issues/detail?id=170&can=1 The following access violation was observed in Microsoft Office 2007 Word document: e24.e28:...

Microsoft WordPad Converter sprm Record Parsing Code Execution - Ver2 (CVE-2011-0028)

A code execution vulnerability has been reported in Microsoft WordPad. The vulnerability is due to an error in the WordPad converter that fails to correctly parse the sprmTTextFlow and the sprmTSplit fields in a Word document. Successful exploitation of this vulnerability could allow a remote...

CVE-2013-3906

GDI+ in Microsoft Windows Vista SP2 and Server 2008 SP2; Office 2003 SP3, 2007 SP3, and 2010 SP1 and SP2; Office Compatibility Pack SP3; and Lync 2010, 2010 Attendee, 2013, and Basic 2013 allows remote attackers to execute arbitrary code via a crafted TIFF image, as demonstrated by an image in a...

Microsoft Tagged Image File Format Heap Overflow

GDI+ in Microsoft Windows Vista SP2 and Server 2008 SP2; Office 2003 SP3, 2007 SP3, and 2010 SP1 and SP2; Office Compatibility Pack SP3; and Lync 2010, 2010 Attendee, 2013, and Basic 2013 allows remote attackers to execute arbitrary code via a crafted TIFF image, as demonstrated by an image in a...