Malicious Office (OLE) / .DOC — malware analysis report

Static analysis result for SHA-256 74b772fa79293f50…

MALICIOUS

Office (OLE) / .DOC

2.15 MB Created: 2010-07-27 19:57:00 Authoring application: Microsoft Word 10.1
MD5: f45132a330e52c2accbe200113ec047a SHA-1: ab2d36fa6661f41ca388799ab8daa1d4dbf61f8f SHA-256: 74b772fa79293f50d6e39c9ef28a6788c7852a07763b23a0f61fd396bf484289
182 Risk Score

Malware Insights

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

The sample is a malicious OLE document containing a VBA macro that executes automatically via the Document_Open subroutine. The macro attempts to disable virus protection and then copies itself to the Normal template and other open documents, indicating an attempt to establish persistence and spread. The ClamAV detection name 'Doc.Trojan.Thus-8' strongly suggests a known malware family, though specific details are not provided.

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.tolleson.com/index.php
    • http://www.linkedin.com/pub/john-barretto/7/18a/686
    • http://ns.adobe.com/xap/1.0/
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/sType/ResourceEvent#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/photoshop/1.0/
    • http://ns.adobe.com/tiff/1.0/
    • http://ns.adobe.com/exif/1.0/
    • http://www.iec.ch

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
e4d31dc6d9d6b73474253c4f4e8bc86783e4d30175a0876b9ad06b847c84a1e1		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2350 bytes
Detection
ClamAV: Doc.Trojan.Thus-8
Obfuscation or payload: unlikely

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