Office (OLE) / .DOC malware analysis — malicious · 9def4979b71b37e5

MALICIOUS

Office (OLE) / .DOC

33.5 KB Created: 2010-03-02 18:04:00 Authoring application: Microsoft Word 11.2

MD5: 052dd367ba5d2efe2e3a465f92c9169e SHA-1: 178ef9796723edb1f278c07176008b2862209b92 SHA-256: 9def4979b71b37e579007dd3ae5f5ced725e7606c5c5594c4b797adf2eacfff2

180 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic

The file is a Microsoft Word document containing a VBA macro, specifically a Document_Open macro, which is a common technique for executing malicious code upon opening. ClamAV detection as 'Doc.Trojan.Thus-8' further confirms its malicious nature. The macro's purpose is inferred to be the download and execution of a secondary payload, a typical behavior for this type of threat.

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` `016e7ef2d9f53040430ed0df896b9a62128acb5145de9c70454cf53068cf10c8`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	2361 bytes
Detection ClamAV: Doc.Trojan.Thus-8 Obfuscation or payload: unlikely

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