Office (OLE) / .DOC malware analysis — malicious · f3454a47fe5cf7c7

MALICIOUS

Office (OLE) / .DOC

247.5 KB Created: 2020-01-14 07:10:00 Authoring application: Microsoft Office Word

MD5: 0719d12188afab9adbc4ceafdef56514 SHA-1: ac81b5596e4f4ae30d548e90d8847f0f80ba7cc9 SHA-256: f3454a47fe5cf7c7860a63661a3288a028e59ba8877f55ffaabf6b03f4eeafec

240 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The file is a malicious OLE document containing VBA macros. The 'Document_Open' macro is automatically executed, and a 'GetObject' call is present, indicating potential execution of embedded code. The ClamAV heuristic 'Doc.Dropper.Generic-7535875-0' strongly suggests this is a dropper. The presence of VBA p-code auto-execution further supports the malicious intent. The document body is heavily obfuscated and unreadable, providing no direct clues to the lure, but the heuristics and ClamAV detection confirm its role as a dropper, likely downloading and executing a second-stage payload.

Heuristics 7

ClamAV: Doc.Dropper.Generic-7535875-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Dropper.Generic-7535875-0
Document_Open macro high OLE_VBA_DOCOPEN

Document_Open 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.
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` `ef6c079c575250cbaa47be1b843b5db175dca0784ca8037b8152f74b49c47e5a`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	11177 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 17 Chr/ChrW string-construction calls.

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