Office (OLE) / .DOC malware analysis — malicious · dd05de775c3c07e1

MALICIOUS

Office (OLE) / .DOC

162.5 KB Created: 2020-09-23 21:50:00 Authoring application: Microsoft Office Word

MD5: 57d9fb3ab8b84afef7a0a32c52b1df2b SHA-1: a33080b399ed62b0c355bc5141bc72a1771651c7 SHA-256: dd05de775c3c07e1c25cf767154016406cb4c3fc2b20a4824593c30830e79583

240 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1204.002 Malicious File

The critical ClamAV detection and high-severity heuristics for VBA macros, specifically the Document_Open auto-execution and CreateObject calls, strongly indicate malicious intent. The presence of a VBA macro within the document, identified as 'macros.bas', is the primary mechanism for execution. The ClamAV signature 'Doc.Downloader.Mryv-9765643-0' suggests this file acts as a downloader for further malicious content.

Heuristics 7

ClamAV: Doc.Downloader.Mryv-9765643-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Mryv-9765643-0
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` `73025ddea320f2b071eb07bf918853ac1d6bc1ed1503c9c9400830c79e2af1db`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	19787 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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