Office (OLE) / .DOC malware analysis — malicious · 7145f674d7e9a55b

MALICIOUS

Office (OLE) / .DOC

175.0 KB Created: 2021-01-22 10:24:00 Authoring application: Microsoft Office Word

MD5: 74a92c19001fe7fbfaef1ae2483fa094 SHA-1: 834ab167b814047f821b80f2da3d29c69b0642a3 SHA-256: 7145f674d7e9a55b682fb8d54a0fe260d43fbd553d37b92a436359450feb9608

202 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample is a malicious OLE document containing VBA macros, specifically a Document_Open macro that executes obfuscated code. This code likely attempts to download and execute a second-stage payload, as indicated by the 'CreateObject' call and the ClamAV detection signature 'Doc.Malware.Emodldr-10033991-0'. The VBA code is heavily obfuscated, making it difficult to determine the exact payload or destination URL without further dynamic analysis.

Heuristics 6

ClamAV: Doc.Malware.Emodldr-10033991-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emodldr-10033991-0
Document_Open macro high OLE_VBA_DOCOPEN

Document_Open macro
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC

Compiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
VBA macros detected medium OLE_VBA_MACROS

Document contains VBA macro code
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.

URL http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `b797bdff6d18edabc5d90a8d419e6bd318927838a8eade718328ed83a496b8ac`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	16627 bytes

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