Office (OLE) malware analysis — malicious · c9cead53b7fbcc5a

MALICIOUS

Office (OLE)

27.0 KB Created: 2007-12-09 15:46:00 Authoring application: Microsoft Word 10.0

MD5: f210ca19905c686ef5b5735ccb4523a3 SHA-1: c3e3195c65e9dcd4242df85ea9da9d383d8a11f2 SHA-256: c9cead53b7fbcc5adf3ccf591a51ac1032c40be120194e4cb9a08d232e108fc1

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 initiating malicious activity upon opening the document. The document body presents a fabricated obituary, likely intended to distract the user while the macro executes. The ClamAV detection 'Doc.Trojan.Strings-1' further confirms its malicious nature. No specific IOCs like URLs or file paths were extracted, but the presence of the Document_Open macro strongly suggests an attempt to download and execute a secondary payload.

Heuristics 4

ClamAV: Doc.Trojan.Strings-1 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Trojan.Strings-1
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` `bb3fdd3d064cdcf6a4f7e8ac833ee1d18b8cc1270816d75b45c36fc78384837d`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	909 bytes
Detection ClamAV: Doc.Trojan.Strings-1 Obfuscation or payload: unlikely

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