Office (OLE) / .DOC malware analysis — malicious · e34c2e3d493cf67c

MALICIOUS

Office (OLE) / .DOC

241.2 KB Created: 2019-03-14 14:23:00 Authoring application: Microsoft Office Word

MD5: ae4b9a05f1d642f1d1f729e51bff2cb6 SHA-1: 952ab04466d4cf1d3ea1991f3d78954b8f54a4c7 SHA-256: e34c2e3d493cf67c31fd7adfff5041b773f3a45b959245e62d922e93c1750573

240 Risk Score

Malware Insights

MITRE ATT&CK

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

The file is a malicious DOC document containing obfuscated VBA macros, as indicated by multiple high and critical heuristic firings including ClamAV detection and VBA p-code auto-execution. The presence of an AutoOpen macro and GetObject calls suggests the macros are designed to execute automatically upon opening. The 'macros.bas' file is identified as a suspicious artifact. The document body is heavily obfuscated and unreadable, providing no direct clues to the lure.

Heuristics 7

ClamAV: Doc.Malware.Obfuse-6895490-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Obfuse-6895490-0
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` `bd8e97c4db1a606ea9ad55bdd8cce74abe02342c1ba5d6425dc72b9db3dbbe6e`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	61070 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 142 Chr/ChrW string-construction calls.

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