Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 d518eb37fe6f1441…

MALICIOUS

Office (OLE)

49.0 KB Created: 1999-06-18 05:03:00 Authoring application: Microsoft Word 8.0
MD5: 151bc4c6ef807ca411b6a0b9fe10ade0 SHA-1: 368a18c260b195fd5d1fbc47a19d03a272bac8f6 SHA-256: d518eb37fe6f144171e1895890b003ff6d9abfd6a34266d2fc84c962000699ff
180 Risk Score

Malware Insights

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

The file is an OLE document containing VBA macros, specifically an AutoOpen macro, which is a common technique for initial execution. The ClamAV detection 'Doc.Trojan.Alarm-1' indicates a known malicious document type. The document body contains motivational text, a common lure to encourage users to enable macros. The AutoOpen macro suggests the intent is to execute malicious code upon opening the document, likely to download a second-stage payload.

Heuristics 4

  • ClamAV: Doc.Trojan.Alarm-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Alarm-1
  • 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
  • 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
5c9a044ab3480686782646081cd464b1c85619a47273f62a79265718397153ac		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10029 bytes
Detection
ClamAV: Doc.Trojan.Alarm-1
Obfuscation or payload: unlikely

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