Office (OLE) / .DOC malware analysis — malicious · 8d5a9607a5c9d9e2

MALICIOUS

Office (OLE) / .DOC

31.5 KB Created: 1904-02-16 23:39:00 Authoring application: Microsoft Word 9.0

MD5: da992134469804316257e112c612087c SHA-1: 1137977bb9f8cbfc88fb0b538dceb256d78b5542 SHA-256: 8d5a9607a5c9d9e21914478af724eb090a2a18e4956d57d11aa60c44a9bf56c0

180 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic 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 initial execution. ClamAV signatures indicate this is a known malicious document type (Doc.Trojan.Thus-10). The presence of the Document_Open macro suggests the malicious payload is designed to execute automatically when the document is opened, likely leading to further stages of infection.

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` `e80464567b38b7434f07fa88b2af2c023c43376310d93d310fe361443bc6734f`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	2309 bytes
Detection ClamAV: Doc.Trojan.Thus-10 Obfuscation or payload: unlikely

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