Office (OLE) / .DOC malware analysis — malicious · 9cadb38ad0b84197

MALICIOUS

Office (OLE) / .DOC

64.0 KB Created: 2010-09-21 18:34:00 Authoring application: Microsoft Word 11.3.5

MD5: 55ab7919bae5c991c11c78171f774de0 SHA-1: 07752f1177651ddf83e9ae56598d02716abf3df1 SHA-256: 9cadb38ad0b84197a8b77a58b61141fcac4946017f47b48bfa6e45f870465a1d

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 detections indicate it's a known malicious document type. The presence of a Document_Open macro strongly suggests the intent is to execute code upon opening, likely to download and execute a second-stage payload. No specific family could be identified.

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` `87a458912ce503de1523327a4f6bb53fa11eccbc3bbfbe5b5c8a8894c3643c7d`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	5275 bytes
Detection ClamAV: Doc.Trojan.Marker-2 Obfuscation or payload: unlikely

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