Office (OLE) / .DOCX malware analysis — malicious · 2de91659abb7c695

MALICIOUS

Office (OLE) / .DOCX

160.9 KB Created: 2020-09-23 12:48:00 Authoring application: Microsoft Office Word

MD5: 4b24c3788af29b8a077a383982e1ed0d SHA-1: a998d5d6f66f3eb4653096d94dabb6b51b1e27c5 SHA-256: 2de91659abb7c6955acf76c9e6a8697511ce46636dc822bf9c9bcef874b43f51

240 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The file contains VBA macros, specifically a Document_Open auto-exec macro, which is a strong indicator of malicious intent. The CreateObject call and p-code execution further support this. The ClamAV detection as 'Doc.Downloader.Generic' suggests the primary function of this macro is to download and execute additional malicious content. No specific family could be identified, but the behavior is consistent with a downloader.

Heuristics 7

ClamAV: Doc.Downloader.Generic-9765533-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Generic-9765533-0
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` `b40b6439e0e94acfcf6292a727f89f3b7b0e2a6faeddd230541e1164d0603753`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	19346 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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