Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 5364c0d9c0f16cb9…

MALICIOUS

Office (OLE)

57.5 KB Created: 2010-03-19 01:11:00 Authoring application: Microsoft Word 11.5.6
MD5: 7d2447de29682fc4e9624c51f7f4f102 SHA-1: 6e741266ae990b5e889d030ccee8825c1e1176cb SHA-256: 5364c0d9c0f16cb9ea07264463230e708a052f8f38b369b307bf91837f5e1a2c
180 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File

The file is an Office document containing VBA macros, specifically a Document_Open macro, which is a common technique for initial execution. ClamAV signatures indicate it is a known malicious document, likely a Trojan. The document body presents a benign-looking math problem, suggesting a social engineering lure to encourage macro execution. The Document_Open macro is likely responsible for downloading and executing a secondary payload.

Heuristics 4

  • 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
eb277a36b3cfd7b950101fc54bdc0c131d71ce2671bbfaec0e864187ee8f13eb		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2362 bytes
Detection
ClamAV: Doc.Trojan.Thus-8
Obfuscation or payload: unlikely

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