Office (OLE) / .DOC malware analysis — malicious · 371a0466be802949

MALICIOUS

Office (OLE) / .DOC

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

MD5: 5c788a5e24b920afd04cd81602661936 SHA-1: 90b326ff782bcf5a9f2e2ea286037df0d28ccb64 SHA-256: 371a0466be8029498b5f44db42295b812cdc93e1e28cd9fb0415935b98ead21f

180 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The file contains VBA macros, specifically a Document_Open auto-execution macro, which is a common technique for initial execution. The presence of CreateObject calls and p-code auto-execution with execution tokens strongly suggests the macro is designed to perform malicious actions, likely downloading and executing a second-stage payload. The document body content is heavily obfuscated and unreadable, providing no further context on the lure.

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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