Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 fc9d353cf8c56d0d…

MALICIOUS

Office (OLE)

46.0 KB Created: 2007-01-31 14:31:00 Authoring application: Microsoft Word 11.3.8
MD5: 606748f37aaa71a594c5386a91dd4a8c SHA-1: 0b618fa9d3c385e264d7101188c4d3d29c9d07cf SHA-256: fc9d353cf8c56d0d8f1a6a04405f34004c5e0fd791916dc1a4d9aba869d2b920
180 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV with multiple signatures. Static analysis detected VBA macros, specifically a Document_Open macro, indicating an attempt to automatically execute code upon opening. The document body, presented as a project proposal, likely serves as a lure to trick the user into enabling macros. The presence of a Document_Open macro strongly suggests the intent to download and execute a second-stage payload.

Heuristics 4

  • ClamAV: Doc.Trojan.Marker-40 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Marker-40
  • 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
ffa7ace8e5d1a54562d64e4b5b5196404b370ba409d38af740ca5494b17032ab		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 4223 bytes
Detection
ClamAV: Doc.Trojan.Marker-2
Obfuscation or payload: unlikely

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