Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 6d34a1cafb56f368…

MALICIOUS

Office (OLE)

39.0 KB Created: 2010-02-26 16:04:00 Authoring application: Microsoft Word 11.3.8
MD5: bd1087ac62c0566409fa0f418aee7bc8 SHA-1: 338e67b278eb8bf8d984c5a983d9fc40a9aee982 SHA-256: 6d34a1cafb56f36859ca7bf1c22504f3e3f4e0c815edb379f3144bd430e91a77
180 Risk Score

Malware Insights

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

The sample is a malicious Office document containing a VBA macro that triggers on Document_Open. The macro attempts to infect the Normal template and other open documents, a common technique for establishing persistence and spreading malware. The ClamAV detection name 'Doc.Trojan.Thus-10' further supports its malicious nature.

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
120c4f97cbda73890880e45a1265452bbf78a4a98efe0d6df68f853681e9e1ae		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2123 bytes
Detection
ClamAV: Doc.Trojan.Thus-10
Obfuscation or payload: unlikely

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