Office (OLE) / .DOCX malware analysis — malicious · f264812feb881903

MALICIOUS

Office (OLE) / .DOCX

1.40 MB Created: 2020-11-12 16:12:00 Authoring application: Microsoft Office Word

MD5: 7b2b3bce5852e83a27500c908444b667 SHA-1: 1e1b9457779b608c2efd9c7f87b683892d34e60c SHA-256: f264812feb88190374ef43a48cf7bccfc3962e9e0bdad333b0e440ebab53063f

140 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell

The sample is a malicious DOCX file containing VBA macros. Heuristics indicate the presence of ShellExecute and GetObject API calls, along with VBA Chr string obfuscation, suggesting the macros are designed to download and execute a secondary payload. The document body is a generic corporate letter, providing no specific lure. No external URLs were identified as malicious.

Heuristics 5

Reference to ShellExecute API high SC_STR_SHELLEXEC

Reference to ShellExecute API
GetObject call high OLE_VBA_GETOBJ

GetObject call
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
- http://schemas.openxmlformats.org/officeDocument/2006/bibliography
- http://schemas.openxmlformats.org/officeDocument/2006/customXml

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `cc9d4e9fa3a2d09acd3f12e45391abbdf26d154705542ee944461ab7cee0fb16`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	14486 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 shell/COM execution token(s). Carved artifact contains 38 Chr/ChrW string-construction calls.

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