Office (OLE) / .DOC malware analysis — malicious · 05404c17be10900e

MALICIOUS

Office (OLE) / .DOC

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

MD5: ec47885c34d14cb968d6929934071453 SHA-1: d69d877c1070f0c920cf6e7576f5f4b87bd60e5c SHA-256: 05404c17be10900ee0d7234c36b3ef17ea901447793a0b3ef2548d3784cc1f30

242 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample contains VBA macros, including a Document_Open auto-execution macro, which is a common technique for malicious Office documents. The VBA code is heavily obfuscated, making it difficult to determine the exact payload, but the presence of CreateObject and GetObject calls suggests it is designed to download and execute a second-stage payload. The ClamAV detection name 'Doc.Malware.Ewtz-9765424-0' is included as an IOC.

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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