Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 c90d4c9b8bd3a221…

MALICIOUS

Office (OLE)

478.5 KB Created: 2009-01-27 13:32:00 Authoring application: Microsoft Word 10.1
MD5: 4a2210891867f1cb231e2615299926a0 SHA-1: 463455d0ccbe7e9378602e36ebbd25bdca51ee33 SHA-256: c90d4c9b8bd3a22164eb785d23ed7f0454e741433b88a56dfd170c59b75b16c9
180 Risk Score

Malware Insights

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

The file contains VBA macros, specifically a Document_Open macro, which is a common technique for executing malicious code upon opening a document. The ClamAV detection 'Doc.Trojan.Thus-8' further confirms its malicious nature. The document body appears to be legitimate conference information, suggesting a social engineering lure to trick the user into enabling macros. No specific malware family could be identified, but the presence of macros indicates a downloader or dropper functionality.

Heuristics 5

  • ClamAV: Doc.Trojan.Thus-8 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Thus-8
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • 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.texasbpa.com
    • http://www.registermychapter.com/bpamem
    • http://www.texasbpa.com/omni_form.html
    • http://www.cctexas.com
    • http://www.tspb.state.tx.us
    • http://www.thestoryoftexas.com
    • http://www.governor.state.tx.us/mansion
    • http://www.batcon.org
    • http://www.cutepdf.com
    • http://www.radisson.com/austintx/
    • http://www.austintexas.org
    • http://www.wildflower.org

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
0eed93baa44f28a167aa783c937236506c3db9d22a1ae8f4ba79954526200d8a		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2342 bytes
Detection
ClamAV: Doc.Trojan.Thus-8
Obfuscation or payload: unlikely

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