Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 30ff6403d0ee61a1…

MALICIOUS

Office (OLE)

57.5 KB Created: 2008-09-30 07:27:00 Authoring application: Microsoft Word 11.0
MD5: f6a2f513bd0ed1ff5da633062a4a09f6 SHA-1: d932becea12f18d9d4b34b571f5c4d0bee728445 SHA-256: 30ff6403d0ee61a17d5f31b27fd5df6fb8128b87c80c53a2ce7571c38ade3137
180 Risk Score

Malware Insights

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

The file is detected as malicious by ClamAV with the signature Doc.Trojan.Walker-1. It contains VBA macros, specifically a Document_Open macro, which is a common technique for executing malicious code upon opening the document. The document body presents a list of triathlon results, serving as a plausible lure. The VBA macros are likely responsible for the malicious payload delivery.

Heuristics 4

  • ClamAV: Doc.Trojan.Walker-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Walker-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.
  • 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
aa26ea430f3b81d2bad1b2f740963b8d38466bf3e119b1001f8339d7653047ed		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 3158 bytes
Detection
ClamAV: Doc.Trojan.Walker-1
Obfuscation or payload: unlikely

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