Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 c57e7ba8ae35052d…

MALICIOUS

Office (OLE)

32.5 KB Created: 2007-11-04 15:03:00 Authoring application: Microsoft Word 11.3.5
MD5: 1474aca36fffd55acc92a7fb9ff84347 SHA-1: 622d338a5495c82c658a129a87b523b546abd335 SHA-256: c57e7ba8ae35052dcedd26b5a82cce0b94906bfc56b1c448e342e6f11780d01b
180 Risk Score

Malware Insights

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

The file is an Office document containing VBA macros, specifically a Document_Open macro, which is a common technique for executing malicious code upon opening. The document body presents as an academic assignment, a common social engineering lure. The presence of a Document_Open macro suggests the intent is to execute malicious code automatically, likely to download and run a second-stage payload. The ClamAV detection further confirms its malicious nature.

Heuristics 4

  • ClamAV: Doc.Trojan.Thus-5 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Thus-5
  • 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
5f3a97e4fb281c182a72f372fc3fa336cfd5e05720d991c712b1da70b22d3ac6		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2343 bytes
Detection
ClamAV: Doc.Trojan.Thus-5
Obfuscation or payload: unlikely

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