Office (OLE) / .DOC malware analysis — malicious · 41c875cb64b4ea44

MALICIOUS

Office (OLE) / .DOC

41.0 KB Created: 2008-04-08 10:43:00 Authoring application: Microsoft Word 10.1

MD5: b6a562b90df7882c19382dcd6b0f3eac SHA-1: 417e2e9a06dd8c1cd86285d9e92eed0e671775ef SHA-256: 41c875cb64b4ea4415090616f3664ba7400fc762aaac40bdb4d9e2602fd279bc

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 initial execution. The document body presents a plausible lure, an application form for a Spanish Club, to trick the user into enabling macros. Upon enabling, the Document_Open macro would execute, likely leading to the download or execution of a secondary payload, as indicated by ClamAV detections on embedded artifacts.

Heuristics 4

ClamAV: Doc.Trojan.Marker-40 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Trojan.Marker-40
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` `d1d6f9c4874122783e3842dcc2565d026598be443650f18b5d904df3958ad552`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	4281 bytes
Detection ClamAV: Doc.Trojan.Marker-2 Obfuscation or payload: unlikely

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