Office (OLE) / .DOC malware analysis — malicious · a3a0f485e1184b90

MALICIOUS

Office (OLE) / .DOC

143.9 KB Created: 2021-01-05 07:06:00 Authoring application: Microsoft Office Word

MD5: 78a46aa1874c703857fa937d024218c0 SHA-1: 312282fe0aae68d2ab18df12da5139553a8a986b SHA-256: a3a0f485e1184b90dc6372bd45d2101ffaa70a4a0ab17565a992cf1f02566426

180 Risk Score

Malware Insights

MITRE ATT&CK

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

The sample is a malicious DOC file containing a Document_Open VBA macro. This macro utilizes CreateObject to execute arbitrary code, a common technique for downloading and running second-stage payloads. The obfuscated document body content and the presence of VBA macros strongly suggest a macro-based malware delivery mechanism.

Heuristics 6

Document_Open macro high OLE_VBA_DOCOPEN

Document_Open macro
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject 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` `d3b097275af7032178b4c001ca8fbb5e7bf0f68c090585141a79334ce9cb0a60`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	10798 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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