Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 b85bf314ec939908…

MALICIOUS

Office (OLE)

337.0 KB Created: 2009-02-19 13:00:00 Authoring application: Microsoft Word 11.3.5
MD5: 552cfca245294a7c3ea21b64a3a1d61f SHA-1: 2d2d078a08e51fb9d2d6b9ba1606030c8c01b956 SHA-256: b85bf314ec9399088ed857baead3d78dbb61b654abc91788a1ed912b56bb2f1d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The file is an Office document containing VBA macros, specifically a Document_Open macro, which is a common delivery mechanism for malware. The ClamAV heuristic identifies it as Doc.Trojan.Story-1. The document body is a press release, suggesting a social engineering lure. The presence of VBA macros and the Document_Open heuristic indicate that the macro code is likely designed to execute automatically upon opening the document, probably to download and execute a secondary payload.

Heuristics 5

  • ClamAV: Doc.Trojan.Story-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Story-1
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • Suspicious extracted artifact high 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.
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • 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://www.apple.com/DTDs/PropertyList-1.0.dtd
    • http://ns.adobe.com/xap/1.0/
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/iX/1.0/
    • http://ns.adobe.com/xap/1.0/mm/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
1aaf19d71ace9bc3cbd75e903b6de76f928be9022ba54d7aa99c651c846729df		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 7056 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 9 Chr/ChrW string-construction calls.

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