Office (OLE) / .DOC malware analysis — malicious · b959db4a77e3c291

MALICIOUS

Office (OLE) / .DOC

165.7 KB Created: 2021-01-05 10:15:00 Authoring application: Microsoft Office Word

MD5: 5f9964c1b6e6315ec3d2f5b2a76aa96c SHA-1: 16513492139cc4eba7a42be61cb6592d8b9f0502 SHA-256: b959db4a77e3c291048240a737b2d7c3374cd86b46c9a27c35cbc8142b877e23

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 OLE VBA macros, including auto-execution via Document_Open and CreateObject calls, strongly indicate a malicious downloader. The presence of a VBA macro (macros.bas) further supports this. The macro likely executes a second-stage payload, as suggested by the 'auto-exec with execution tokens' heuristic. The document body content is heavily obfuscated and unreadable, providing no additional context.

Heuristics 7

ClamAV: Doc.Downloader.EmotetRed02224-9938637-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.EmotetRed02224-9938637-0
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` `8c4d881ce710c5bdc93f3892d458c04d696e3b291027b95b98b9ccba700a5f56`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	10716 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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