Office (OLE) / .XLS malware analysis — malicious · 2243543082e7ec69

MALICIOUS

Office (OLE) / .XLS

6.38 MB Created: 2008-03-24 14:25:55 Authoring application: Microsoft Excel

MD5: 5d5197c9ed8120d994996fe52c09ef78 SHA-1: 089aa463837ad2f8da8b93cb459613adcd58f5b9 SHA-256: 2243543082e7ec69c7502af3d73864e342d7126acf187498ff837947e1e83afe

80 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious File T1204.002 Malicious File: User Execution: Malicious Attachment T1059.005 Command and Scripting Interpreter: Visual Basic

The file is a Microsoft Excel spreadsheet containing a malicious Equation Editor OLE object, a common vector for exploiting vulnerabilities. Heuristics indicate the presence of obfuscated VBA macros, suggesting the document is designed to download and execute a second-stage payload. The specific exploit used is likely related to the Equation Editor vulnerability.

Heuristics 4

Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR

Contains Equation Editor object — related to CVE-2017-11882 / CVE-2018-0802 exploitation, but CLSID presence alone is not the malformed MTEF exploit primitive.
VBA macros detected medium OLE_VBA_MACROS

Document contains VBA macro code
Suspicious extracted artifact medium EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL http://schemas.openxmlformats.org/drawingml/2006/main
- http://www.airbus.com/store/mm_repository/pdf/att00012280/media_object_file_A320Family_tech_appendices.pdf
- http://www.boeing.com/commercial/startup/pdf/CargoPalletsContainers.pdf
- http://msis.jsc.nasa.gov/sections/section03.htm

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `dd3527f160966fdebe172c288e2ddd70ad81866ae3a019e364320d48178ff3e0`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	188896 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 8 Chr/ChrW string-construction calls.

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