Office (OLE) / .DOC malware analysis — malicious · 8c2167e0297ffcef

MALICIOUS

Office (OLE) / .DOC

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

MD5: 9d552278675c4b9f7345025e092973c5 SHA-1: 937f38c24dce3530de7fa22962836b9c1a9c70bf SHA-256: 8c2167e0297ffcef1e67f0aed9f87dd7de95a4b552865584b7bd0185ac8f98f9

240 Risk Score

Malware Insights

MITRE ATT&CK

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

The critical ClamAV detection and high-severity heuristics for VBA macros, including auto-execution via Document_Open and CreateObject calls, strongly indicate malicious intent. The presence of a VBA macro in macros.bas, combined with the auto-execution firing, suggests the macro is designed to run automatically upon opening the document. This macro likely downloads and executes a second-stage payload, as indicated by the 'Doc.Downloader' classification.

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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