Office (OLE) / .DOC malware analysis — malicious · 8774a4e21e5c187c

MALICIOUS

Office (OLE) / .DOC

242.1 KB

MD5: 563c9b534a3d8285fc7c4bac32d50ad1 SHA-1: 1a74d48baf1696c748a7b2c96f2bee5cb4a874aa SHA-256: 8774a4e21e5c187c5b68d43c4789009a3eca07aa1193d674b5589938ea46f663

240 Risk Score

Malware Insights

MITRE ATT&CK

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

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

Heuristics 7

ClamAV: Doc.Downloader.Generic-9785156-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Generic-9785156-0
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` `53c940c9e61b86bba3a049505972bd865d71f0e7c155177329bd8613b2e4028a`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	18779 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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