Office (OLE) / .DOC malware analysis — malicious · 0de0e21b2d6345de

MALICIOUS

Office (OLE) / .DOC

159.5 KB Created: 2020-09-22 07:35:00 Authoring application: Microsoft Office Word

MD5: 27087f5bf839a8817e349bc8f181ff73 SHA-1: c33f0a013798d4c732809074895946086358bb7a SHA-256: 0de0e21b2d6345de1cea6993fb9a6844eb12ca11686ea8c82a1792e030233557

242 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample is a Microsoft Word document containing a VBA macro that is automatically executed upon opening (Document_open). This macro utilizes CreateObject and GetObject calls, indicative of malicious intent to download and execute a payload. The ClamAV detection name 'Doc.Malware.Ewtz-9765424-0' further supports its malicious nature. The VBA code is heavily obfuscated, making it difficult to determine the exact download URL or payload, but the overall pattern suggests a downloader.

Heuristics 7

ClamAV: Doc.Malware.Ewtz-9765424-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Ewtz-9765424-0
Document_Open macro high OLE_VBA_DOCOPEN

Document_Open macro
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
GetObject call high OLE_VBA_GETOBJ

GetObject 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` `a112d95a2b3b8361e272604fc368010c1a607c2cd21f88c20a607d79b8ac6136`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	16742 bytes

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