Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 94eb22bdcf101987…

MALICIOUS

Office (OLE)

145.5 KB Created: 1999-10-11 08:00:00 Authoring application: Microsoft Word 8.0
MD5: f3c7b15eb6e23ac4229c7a06f5cd5d80 SHA-1: 96ed47e638543642615b9a8658e6ea0d87430290 SHA-256: 94eb22bdcf101987c884742efc290e9fa4bd6f0697b7c50dddab5c2b0359319a
220 Risk Score

Malware Insights

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

The file contains VBA macros, including AutoOpen and Auto_Close, which are commonly used to execute malicious code upon opening or closing a document. The document body, while appearing to be about a conference and local information, is likely a lure to entice the user to enable macros. ClamAV detections indicate this is a known malicious document type. No specific second-stage payload or network indicators were extracted, limiting further analysis.

Heuristics 5

  • ClamAV: Doc.Trojan.Class-37 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Class-37
  • 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.
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen macro
  • Auto_Close macro high OLE_VBA_AUTOCLOSE
    Auto_Close 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
9f7bf57612367c3b7c644ad2811b95f5a3f53a1898abb51addd4740ff8bec049		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 17865 bytes
Detection
ClamAV: Doc.Trojan.Class-1
Obfuscation or payload: unlikely

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