Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 56e232f5b516a5c9…

MALICIOUS

Office (OLE)

36.0 KB Created: 2010-05-21 14:10:00 Authoring application: Microsoft Word 11.5.0
MD5: 54d1a41f94b3780ea2cdaaf06d0d46c6 SHA-1: b1fb657080e0ae432e360844d1d76fd9231457f7 SHA-256: 56e232f5b516a5c98867bcc5c38fc5256fc1aed8819623e7cd077df1ab1015c4
180 Risk Score

Malware Insights

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

The file is an OLE document containing VBA macros, specifically triggering a Document_Open macro. Heuristics indicate the presence of malicious VBA code, and ClamAV signatures identify it as 'Doc.Trojan.Thus-10'. The document body discusses 'Senioritis' as a pretext to engage the reader, likely to encourage macro execution. No specific second-stage payload or network indicators were extracted.

Heuristics 4

  • ClamAV: Doc.Trojan.Thus-10 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Thus-10
  • 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
fe81c2d74adf8ac3805ddb4e45b3c4f744997ace0bb83ac28803f536e8249bbd		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2282 bytes
Detection
ClamAV: Doc.Trojan.Thus-10
Obfuscation or payload: unlikely

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