Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 8f5b6787827652e2…

MALICIOUS

Office (OLE)

79.5 KB Created: 2010-01-12 15:47:00 Authoring application: Microsoft Word 11.5.5
MD5: b5ad12f668750e9de3a2d8cca2d52cc4 SHA-1: 740df31946ef1da72ecc88445f8becbc2ca1f959 SHA-256: 8f5b6787827652e2829c59c87850448fd2193fe101745c4d7b9e09d8155c9c0b
180 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV with the signature Doc.Trojan.Thus-8. Static analysis detected VBA macros, specifically a Document_Open macro, indicating that the document is designed to execute malicious code upon opening. The document body contains text related to a short story, likely serving as a lure to engage the user. The presence of the Document_Open macro suggests an attempt to automatically run malicious routines, possibly for further payload delivery or system compromise.

Heuristics 4

  • 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
a2fa8fe7956054e4e2d26a300df497733367e2820bb1c88d340643554779f128		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2404 bytes
Detection
ClamAV: Doc.Trojan.Thus-8
Obfuscation or payload: unlikely

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