Office (OLE) / .DOC malware analysis — malicious · e9ba1950c0cba787

MALICIOUS

Office (OLE) / .DOC

198.4 KB Created: 2019-03-13 06:33:00 Authoring application: Microsoft Office Word

MD5: dd73ebe1753549cd5446626006b23f49 SHA-1: 5e73faf23200e1dfad5c075cb75abeb23ac1ad2a SHA-256: e9ba1950c0cba787afceb3c933f1875b6bd6d4c98e5f6922e3e556513daeb379

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 triggering an AutoOpen macro that uses GetObject for execution. The presence of obfuscated VBA code in 'macros.bas' and the ClamAV detection 'Doc.Malware.Obfuse-6903012-0' strongly indicate a malicious intent. The AutoOpen macro likely executes obfuscated VBA code to download and run a second-stage payload, a common technique for initial compromise.

Heuristics 7

ClamAV: Doc.Malware.Obfuse-6903012-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Obfuse-6903012-0
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` `c256514a34ce2e27f6b8a7c42fd0a1ea3ae123179d4e276ec7aaa8faae214c91`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	38898 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 423 Chr/ChrW string-construction calls.

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