Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 9f4c3fd3f1c6fb88…

MALICIOUS

Office (OLE)

68.5 KB Created: 2010-06-16 20:36:00 Authoring application: Microsoft Word 11.3.8
MD5: cf8a4547dfca9484f1611da41e842a4d SHA-1: c6cb9f920a222d29b7f71046558833f4feb17bff SHA-256: 9f4c3fd3f1c6fb889d26782a27fe42511e65f4f5f491e319dd632e78b0b2e26b
180 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The sample is a Microsoft Office document containing VBA macros, specifically a Document_Open macro, which is a common technique for initial execution. The document body presents information about the Hazel Park Educational Foundation, likely as a lure to encourage users to enable macros. The presence of a Document_Open macro suggests an attempt to automatically execute malicious code upon opening the document. The ClamAV detection as 'Doc.Trojan.Myna-1' further confirms its malicious nature. No specific malware family could be identified, but the overall pattern suggests a macro-based downloader.

Heuristics 5

  • ClamAV: Doc.Trojan.Myna-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Myna-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.edfound.hazelpark.k12.mi.us

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
13fb5b7f87c5001ac2953c97ac613ba43d78d54e7a58d612ca45f215265d8fc4
vba-macro oletools.olevba.extract_macros (decoded VBA source) 4271 bytes
Detection
ClamAV: Doc.Trojan.Myna-1
Obfuscation or payload: unlikely