Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 b1fe4009e9f7d248…

MALICIOUS

Office (OLE)

61.0 KB Created: 2010-01-15 14:56:00 Authoring application: Microsoft Word 11.5.6
MD5: 31294012fa7111120275d839a0baae9b SHA-1: ffa6222e2e5ff6410a9a5665a1401e54e41f785a SHA-256: b1fe4009e9f7d248d4f88e6e05589c80c3108603c886d4f751697351c8231dbc
180 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The document contains VBA macros, specifically a Document_Open macro, which is a common technique for executing malicious code upon opening. The document body presents a plausible homework assignment, directing the user to a specific website. This website likely serves as a lure to download a second-stage payload, as indicated by the ClamAV detection of 'Doc.Trojan.Thus-8'. The embedded URLs and the email address are potential indicators of compromise.

Heuristics 5

  • ClamAV: Doc.Trojan.Thus-8 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Thus-8
  • 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://fsd.k12.ca.us/~carin_leavitt/Carin_Leavitt/Welcome.html
    • http://fsd.k12.ca.us/~carin_leavitt/Carin_Leavitt/Welcome.html3

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
dfb3ab7e24621534f5cebbfdb3e8750a9bda040564e838722f98abfee1e8bd70		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2376 bytes
Detection
ClamAV: Doc.Trojan.Thus-8
Obfuscation or payload: unlikely

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