Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 e655b469aa9649b0…

MALICIOUS

Office (OLE)

44.5 KB Created: 2010-01-20 15:58:00 Authoring application: Microsoft Word 12.0.0
MD5: 70a49d5e798299c89519843488209a81 SHA-1: 1349a211dd04bff097c0f9bfbba1839570f2a088 SHA-256: e655b469aa9649b03f9eddd5e12cf8733de8415fa6c23d7965e13825dbafad3c
180 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic for Applications

The file is a Microsoft Word document containing malicious VBA macros, specifically a Document_Open macro. The document body is formatted as a homework assignment for an American History class, likely to trick the user into enabling macros. The presence of a Document_Open macro indicates an attempt to automatically execute malicious code upon opening the document. The ClamAV detections further confirm its malicious nature.

Heuristics 5

  • ClamAV: Doc.Trojan.Marker-40 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Marker-40
  • 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://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
b1507f4ac63ebaa70feab66c5c8f92e285d1c69df4d0bc94da6ee6ec686967bb
vba-macro oletools.olevba.extract_macros (decoded VBA source) 4240 bytes
Detection
ClamAV: Doc.Trojan.Marker-2
Obfuscation or payload: unlikely