Office (OLE) / .DOC malware analysis — malicious · 3524e82756d275ab

MALICIOUS

Office (OLE) / .DOC

200.6 KB Created: 2020-09-21 06:43:00 Authoring application: Microsoft Office Word

MD5: b5bed35d5cfb6dcd06b40b70fb773039 SHA-1: 326f123c2001e15355919e71744116fd82b301d5 SHA-256: 3524e82756d275ab7434be4cd09d62571c8c35589b2a289cab9c01848bfa4592

280 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 on the Document_Open event. Heuristics indicate the use of CreateObject and GetObject, common for downloading and executing payloads. The ClamAV detection as 'Doc.Downloader.Generic' further supports this. The embedded URL, though benign, is noted. The primary attack vector appears to be macro execution to download further malicious content.

Heuristics 8

ClamAV: Doc.Downloader.Generic-9764468-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Generic-9764468-0
Document_Open macro high OLE_VBA_DOCOPEN

Document_Open macro
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
GetObject call high OLE_VBA_GETOBJ

GetObject 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` `7169cbbf5de322d778ca9a77dc58bcf8bb22a6f6d4bfec64dbfa06bc63509b99`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	19229 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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