Office (OLE) malware analysis — malicious · 4c9876a2fbe85cb9

MALICIOUS

Office (OLE)

41.0 KB Created: 2009-05-06 14:01:00 Authoring application: Microsoft Word 11.3.5

MD5: 3c3e36759926ec37947bc49a148ba206 SHA-1: 0053ec3ab6564aacd4d9599c81fa5bb5226edfb1 SHA-256: 4c9876a2fbe85cb9bb6a4e982a6ee8eb4e3a9b42059519fcbf41b958f67eac4c

180 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic for Applications T1566.001 Spearphishing Attachment

The file is a Microsoft Word document containing VBA macros, specifically a Document_Open macro, which is a common technique for executing malicious code upon opening. The document body presents a plausible-looking course syllabus to trick the user into enabling macros. The ClamAV detection 'Doc.Trojan.Thus-10' further confirms its malicious nature. No specific IOCs like URLs or hashes were extracted from the macros themselves, but the presence of the Document_Open macro is a strong indicator of malicious intent.

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.

Filename	Kind	Source	Size
`macros.bas` `92d0fa20925437be855228570a2aee5857b549baa6f864914dbb8b0b4fb228f1`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	2270 bytes
Detection ClamAV: Doc.Trojan.Thus-10 Obfuscation or payload: unlikely

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