Office (OLE) / .DOC malware analysis — malicious · dace2519c5849922

MALICIOUS

Office (OLE) / .DOC

137.5 KB Created: 2020-05-31 01:44:00 Authoring application: Microsoft Office Word

MD5: 4ad252afaaac53b9e64365cc576acb6e SHA-1: 33c3851fdb9696e4fa5c86c23ef6feff2c0f1558 SHA-256: dace2519c584992232068c97b8e63390dd58cd45f1824f4de80105d9cee328d6

142 Risk Score

Malware Insights

MITRE ATT&CK

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

The file is a malicious Microsoft Word document containing a large VBA macro. The presence of an AutoOpen macro and GetObject calls strongly suggests that the macro is designed to execute code upon opening. The macro source code is obfuscated, but the heuristic firings indicate it likely downloads and executes a second-stage payload. No specific family could be identified, but the delivery mechanism is typical of macro-based malware.

Heuristics 6

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.
VBA macros detected medium OLE_VBA_MACROS

Document contains VBA macro code
Suspicious extracted artifact info 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.
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` `1571e83688f9ca801601f6e9e1a96ea224e20cf245d89634631e1b423decf5af`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	25003 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 long base64-like blob(s).

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