Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 c3d14fdc920e0b13…

MALICIOUS

Office (OLE)

60.0 KB Created: 2005-10-26 23:54:00 Authoring application: Microsoft Word 8.0
MD5: 15856fb248cc3ec2b1aa7a5c8859dec2 SHA-1: 39c3c75752ae72acd7610b6d0a3caea82f870f8d SHA-256: c3d14fdc920e0b13d74e94f474495b8034bbdbac738794578ed64d7dd212c1c1
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.NSI-2'. Static analysis detected VBA macros, specifically a 'Document_Open' macro, indicating a likely attempt to execute malicious code upon opening the document. The document body contains technical details about CT scanners, suggesting a lure to disguise the malicious intent. The primary IOC is the ClamAV signature.

Heuristics 4

  • ClamAV: Doc.Trojan.NSI-2 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.NSI-2
  • 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
c6dc6c95265053c4cb447591406b161dd65bfeef8abb134302d37e62e4febdd6		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 4548 bytes
Detection
ClamAV: Doc.Trojan.NSI-2
Obfuscation or payload: unlikely

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