Office (OLE) / .DOCX malware analysis — malicious · 9caac7ec4f644b1f

MALICIOUS

Office (OLE) / .DOCX

11.78 MB Created: 2020-04-09 15:27:00 Authoring application: Microsoft Office Word

MD5: 8763ac366448b1fb4c6060182fd54d73 SHA-1: 034d40c310bdd17c513133eb3c8dacb6b1450895 SHA-256: 9caac7ec4f644b1ff69247975430b43be9691b5c3d4f040bd1f9d9c303bfd854

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample contains a high-severity heuristic firing for VBA macros and a Document_Open macro, indicating automatic execution upon opening. The presence of 'wscript' references and a suspicious extracted artifact named 'macros.bas' further suggests malicious VBA code. The macro is likely intended to download and execute a second-stage payload, a common technique for initial access.

Heuristics 6

Reference to Windows Script Host high SC_STR_WSCRIPT

Reference to Windows Script Host
Document_Open macro high OLE_VBA_DOCOPEN

Document_Open macro
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
Environ() call (env variable access) low OLE_VBA_ENVIRON

Environ() call (env variable access)
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` `35efa3d21961c647699da446c79d1e87337b498f6b5ac5aae6af70a79bd9e19c`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	15450 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.

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