Office (OLE) / .DOC malware analysis — malicious · fcb8fef26e4edc6a

MALICIOUS

Office (OLE) / .DOC

199.4 KB Created: 2020-09-21 06:43:00 Authoring application: Microsoft Office Word

MD5: dbe0d3cd41724c50b4439d2e778708b4 SHA-1: 27914787ac369eb6eeedd001545e7f7e3c86ccd8 SHA-256: fcb8fef26e4edc6a1fc63f2893b2b435f10020d3a5bf3ed0aca9405654de86d1

280 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1204.002 Malicious File

The file is a malicious OLE document containing VBA macros. The presence of a Document_Open macro, CreateObject, and GetObject calls, along with p-code auto-execution, strongly indicates that the macros are designed to run automatically when the document is opened. The ClamAV detection as 'Doc.Downloader.Generic' further supports the conclusion that this file is a downloader. No specific URLs or executable payloads were directly extracted, but the heuristic firings suggest the primary function is to fetch and execute additional malware.

Heuristics 8

ClamAV: Doc.Downloader.Generic-9764468-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Generic-9764468-0
Document_Open macro high OLE_VBA_DOCOPEN

Document_Open macro
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
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` `7169cbbf5de322d778ca9a77dc58bcf8bb22a6f6d4bfec64dbfa06bc63509b99`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	19229 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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