Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 07ccd4ff8a6ae813…

MALICIOUS

Office (OLE)

36.5 KB Created: 2007-11-20 17:47:00 Authoring application: Microsoft Word 10.0
MD5: 2fb9717d8d9394861d4d27c2840d325a SHA-1: bfb3f0739732dddd2ae4c420041494ec89b51656 SHA-256: 07ccd4ff8a6ae813b7869d5c720741221a2dc665184497d84f8c2ac41ba23f2b
182 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1547.001 Registry Run Keys / Startup Folder

The sample is a malicious Office document containing a VBA macro. The macro is triggered by the Document_Open event and attempts to modify the Normal.dot template. This technique is often used to establish persistence or to ensure the macro runs every time a new document is created. The specific intent of the macro is to overwrite the Normal.dot template with its own code, which is a common persistence mechanism.

Heuristics 5

  • ClamAV: Doc.Trojan.Strings-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Strings-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
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www.kidsfirst.org/kidsfirst/html/filmfestival.htm
    • http://www.kidsfirst.org
    • http://www.magiccellar.tv
    • http://www.kharas.ca

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
bb3fdd3d064cdcf6a4f7e8ac833ee1d18b8cc1270816d75b45c36fc78384837d		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 909 bytes
Detection
ClamAV: Doc.Trojan.Strings-1
Obfuscation or payload: unlikely

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