Office (OLE) / .DOC malware analysis — malicious · 3d5a52a49d4d3a1a

MALICIOUS

Office (OLE) / .DOC

171.7 KB Created: 2020-09-14 06:50:00 Authoring application: Microsoft Office Word

MD5: 486ba0a5ef1d26cca2c58867aea7322a SHA-1: be62384385750a0936e6e6c1f8efa08b988b718c SHA-256: 3d5a52a49d4d3a1a4b55f37e72b0cbac375d6255bd13dec5f11eff94a20fa508

240 Risk Score

Malware Insights

MITRE ATT&CK

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

The file is a Microsoft Office document containing VBA macros, specifically triggering a Document_Open auto-execution macro. High-severity heuristics indicate the use of CreateObject and p-code auto-execution, strongly suggesting the execution of malicious code. The ClamAV detection as 'Doc.Downloader.Generic' further supports this. The presence of the 'macros.bas' artifact confirms the macro content. The primary intent appears to be downloading and executing a second-stage payload.

Heuristics 7

ClamAV: Doc.Downloader.Generic-9759993-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Generic-9759993-0
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` `2f04d2c5f8d6e9aa986e4a10ac7acf2ca0b43f6804faff843484382b05b82501`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	25260 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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