Office (OLE) / .DOCX malware analysis — malicious · 4ecbd935aed0b9ce

MALICIOUS

Office (OLE) / .DOCX

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

MD5: 95a5172e17e72433d28442722202bb15 SHA-1: 3309318b6c029153add54cf6605bc08ffb9185d5 SHA-256: 4ecbd935aed0b9ce03f5fb2539608b31e2b0ecf189a04efb2e17ebcc24cf2772

280 Risk Score

Malware Insights

MITRE ATT&CK

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

The sample is a Microsoft Office document containing VBA macros, indicated by the OLE_VBA_MACROS heuristic. The presence of a Document_Open macro and CreateObject/GetObject calls, along with the ClamAV detection of 'Doc.Downloader.Generic-9764637-0', strongly suggests that the macros are designed to download and execute a second-stage payload. The document body is heavily obfuscated and does not provide clear user-facing content, further supporting a malicious intent.

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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