Office (OLE) / .DOC malware analysis — malicious · e9101d348f50f967

MALICIOUS

Office (OLE) / .DOC

152.1 KB Created: 2019-03-19 16:45:00 Authoring application: Microsoft Office Word

MD5: 7966ac088ceb397fc6e7a713cc213b0d SHA-1: 7e95fd3b246b3f889a70a409823407563427592f SHA-256: e9101d348f50f967bb46bf2d2021dc4374ac30eeed17cecaf65382647fdc865c

240 Risk Score

Malware Insights

MITRE ATT&CK

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

The file is a malicious OLE document containing VBA macros, specifically an AutoOpen macro. The presence of GetObject calls and VBA p-code auto-execution indicates the macro is designed to run code. The ClamAV detection and heuristic firings confirm its malicious nature. The primary IOC is the embedded 'macros.bas' file, which likely contains the malicious VBA code.

Heuristics 7

ClamAV: Doc.Malware.Drvb-6901569-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Drvb-6901569-0
AutoOpen macro high OLE_VBA_AUTOOPEN

AutoOpen macro
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` `5f1751abaa8b5156b0798ee208eb5af22894b10ea62e9118bf139140a8b6f9a4`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	10598 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 27 Chr/ChrW string-construction calls.

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