Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 31711f67d98d04a2…

MALICIOUS

Office (OLE)

56.0 KB Created: 2006-07-15 04:16:00 Authoring application: Microsoft Word 9.0
MD5: 0ef8a75d5366da238bf7ae00ff21b8f2 SHA-1: 5ec5b84b9529a09d7dc6d3336cd771c759433c55 SHA-256: 31711f67d98d04a2e3540f2038ee616b53e9c27df38d2aae26e503435056e93f
180 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV with the signature Doc.Trojan.Xaler-1. Static analysis detected VBA macros, specifically a Document_Open macro, indicating an attempt to automatically execute malicious code upon opening the document. The document body, despite being truncated, suggests an educational context, likely a lure to trick users into enabling macros. The presence of a Document_Open macro strongly suggests the intent is to download and execute a second-stage payload.

Heuristics 4

  • ClamAV: Doc.Trojan.Xaler-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Xaler-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
1dc44b277ae09b4b0c5439db1cc19c48bce5d0aab418e2c2e228e1c8b3d9b8e1		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2587 bytes
Detection
ClamAV: Doc.Trojan.Xaler-1
Obfuscation or payload: unlikely

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