Office (OLE) malware analysis — malicious · 86383894e07980b4

MALICIOUS

Office (OLE)

32.0 KB Created: 2007-08-14 20:16:00 Authoring application: Microsoft Word 11.3

MD5: 8b1afb188184488834b63f8221021db1 SHA-1: 77ad2ee1e73f55d944e1ec9b54006437e98764d6 SHA-256: 86383894e07980b45fb5a3e5525dcde2d228e3f4749eef137979f9fdecac6e60

180 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic for Applications T1204.002 Malicious File

The file is a Microsoft Word document containing VBA macros, specifically a Document_Open macro. This macro is designed to execute automatically when the document is opened, likely to download and execute a second-stage payload. The ClamAV detection as 'Doc.Trojan.Thus-8' further supports its malicious nature. The document body content appears benign, suggesting the malicious functionality is entirely within the macros.

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.

Filename	Kind	Source	Size
`macros.bas` `33a30b54667d2b0182b7b1bc69b2be678b22b4c14b42fe2dad532d945682c587`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	2382 bytes
Detection ClamAV: Doc.Trojan.Thus-8 Obfuscation or payload: unlikely

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