Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 9a63aa1608bd2dbd…

MALICIOUS

Office (OLE)

44.0 KB Created: 2002-01-16 16:59:00 Authoring application: Microsoft Word 11.0
MD5: af2dc477251e615dfee2908a07abe188 SHA-1: b889fc481b5c0dfa5e04260bd4184e9bc5fe374c SHA-256: 9a63aa1608bd2dbd91cf95c489f6ddfe17c238aef2f12bc1d6f54c254507ba76
180 Risk Score

Malware Insights

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

The file is a Microsoft Office document containing VBA macros, specifically triggering a Document_Open macro. ClamAV detections (Doc.Trojan.Thus-8) indicate malicious intent. The presence of a Document_Open macro strongly suggests an attempt to execute malicious code upon opening the document, likely for downloading and executing a second-stage payload. No specific IOCs like URLs or hashes were extracted from the provided evidence.

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
1afd51e648174890b9453b7276d4c2753b784bde43597a5ea747e6df0143f7be
vba-macro oletools.olevba.extract_macros (decoded VBA source) 2016 bytes
Detection
ClamAV: Doc.Trojan.Thus-8
Obfuscation or payload: unlikely