Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 f83b0a3736b6932e…

MALICIOUS

Office (OLE)

53.5 KB Created: 2010-01-14 15:57:00 Authoring application: Microsoft Word 11.5.5
MD5: 71a05abbbb2155dac848765d9cf39d6c SHA-1: 12907bde8244d2f025d8a1b2e6f1361628fc511e SHA-256: f83b0a3736b6932ebfd5e24a86182a91610a7be4f36e4ed84e5fa31970fcf58f
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.Thus-10'. It contains VBA macros, including a 'Document_Open' macro, which is a common technique for executing malicious code upon opening the document. The document body presents a plausible lure related to a school project, aiming to trick the user into enabling macros.

Heuristics 4

  • ClamAV: Doc.Trojan.Thus-10 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Thus-10
  • 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
8b37ff85f16e0da749c5512886221680707c0e2ccb13d0b2a8df9476916bd891		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1976 bytes
Detection
ClamAV: Doc.Trojan.Thus-10
Obfuscation or payload: unlikely

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