Office (OLE) / .DOC malware analysis — malicious · 96cbb67f5c85654e

MALICIOUS

Office (OLE) / .DOC

137.5 KB Created: 2020-05-31 01:43:00 Authoring application: Microsoft Office Word

MD5: eccd93cfa03a1f1f4b2af649adcceb97 SHA-1: ff268c3805f2064f4bac44588e97fab006c285d8 SHA-256: 96cbb67f5c85654ee14f435a13f90a2f11b7eb2cfd8866bec7a7d6e2fc5c3637

142 Risk Score

Malware Insights

MITRE ATT&CK

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

The sample is a malicious OLE document containing a large VBA macro. The presence of an AutoOpen macro and GetObject calls strongly suggests that the macro is designed to execute arbitrary code upon opening. The heuristic 'OLE_VBA_PCODE_AUTOEXEC_EXEC' further indicates that the macro's p-code is set up for auto-execution via GetObject within the AutoOpen function. While no specific download URL was extracted, the macro's structure implies it's a downloader for a second-stage payload. The document body is heavily obfuscated and unreadable, providing no direct clues to the lure.

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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