Office (OLE) / .DOCX malware analysis — malicious · 393e7f7b1076dda5

MALICIOUS

Office (OLE) / .DOCX

161.3 KB Created: 2020-09-17 22:23:00 Authoring application: Microsoft Office Word

MD5: dae449b44c3a9832f2460991b7e3feae SHA-1: 628496957adad6932c6d12283670147960a31ccc SHA-256: 393e7f7b1076dda565b8910fa5cbcd172477be0d32cb668b7ba7f32f122c1c26

240 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1059.001 PowerShell

The file is a Microsoft Office document containing a large VBA macro. The 'Document_Open' macro is automatically executed upon opening, and it utilizes 'CreateObject' to initiate malicious actions. ClamAV detection as 'Doc.Downloader.Generic-9763113-0' strongly suggests its role as a downloader for further malicious payloads. No specific family could be identified, but the technique is consistent with macro-based malware delivery.

Heuristics 7

ClamAV: Doc.Downloader.Generic-9763113-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Generic-9763113-0
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` `98a29bdf4abf669a96318f520c9bfe3aa10e950f57f7c585bdcdcff6e6ad90b2`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	21952 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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