Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 a93c9ddd234f700f…

MALICIOUS

Office (OLE)

40.0 KB Created: 2010-02-23 20:21:00 Authoring application: Microsoft Word 10.1
MD5: f37f44df6fee21ca3ac608e53e6c9912 SHA-1: 8cafa75f0eb13ebf97ac00d8b004cf5af7766fe8 SHA-256: a93c9ddd234f700fe23acf2e8ffac72b0e3a6cfb1573088c74c2bf240dec6c89
180 Risk Score

Malware Insights

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

The file is an Office document containing VBA macros, specifically a Document_Open macro, which is a common delivery mechanism for malware. The document body presents a permit application form to trick the user into enabling macros. The presence of VBA macros and the Document_Open trigger strongly suggest malicious intent, likely to download and execute a secondary payload.

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
44aff278df889053b76c656b49cad59a005e476cf5a97c6b15fc094b52fce002		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2371 bytes
Detection
ClamAV: Doc.Trojan.Thus-8
Obfuscation or payload: unlikely

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