Office (OLE) / .DOC malware analysis — malicious · e1d8dfc3a556f69e

MALICIOUS

Office (OLE) / .DOC

155.9 KB Created: 2020-09-22 12:54:00 Authoring application: Microsoft Office Word

MD5: d9c66fa696f35fd36d9ecea36dd1fea4 SHA-1: 7768c8506af83e378ae59a9ce111364807516c7d SHA-256: e1d8dfc3a556f69eee5020528fb8a0c162311ee657051178da6c91bba5eabf9f

280 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1566.001 Spearphishing Attachment

The file is a malicious Office document containing VBA macros, specifically triggering a Document_Open macro. Heuristics indicate the use of CreateObject and GetObject calls, suggesting the execution of arbitrary code. The presence of a 'macros.bas' file and the ClamAV detection further confirm its malicious nature. The primary attack pattern involves leveraging the auto-executing Document_Open macro to run embedded malicious VBA code.

Heuristics 8

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.
Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
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` `63bc7201a259a9f3eac24fc4f9990c61de6bed3eb66abffd8ef4af2ac67d9b62`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	15901 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.

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