Office (OLE) / .DOCX malware analysis — malicious · c1fbade9d5f7c2b5

MALICIOUS

Office (OLE) / .DOCX

210.4 KB Created: 2020-09-21 19:39:00 Authoring application: Microsoft Office Word

MD5: 140af6bea586c17db99e6297f9c4756c SHA-1: 4b426f63b023e7af568f4e63c2d017430d4d4d10 SHA-256: c1fbade9d5f7c2b5705288400f77ce167e2f71ae4bda087c52e2983d2dffbdf2

280 Risk Score

Malware Insights

MITRE ATT&CK

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

The file is a Microsoft Office document containing VBA macros, specifically a Document_Open macro. Heuristics indicate the use of CreateObject and GetObject, common for executing malicious code. The ClamAV detection as 'Doc.Downloader.Generic' strongly suggests its purpose is to download and execute additional malware. No specific family could be identified, but the behavior points to a downloader. The document body was unreadable binary data, providing no contextual clues.

Heuristics 8

ClamAV: Doc.Downloader.Generic-9764637-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Generic-9764637-0
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` `4078e425aac0675c0d67424bcd647792033cab09565190ea70103f9b942a9f1f`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	19109 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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