Office (OLE) / .DOCX malware analysis — malicious · a4fdfc91d580edf5

MALICIOUS

Office (OLE) / .DOCX

176.8 KB Created: 2020-09-28 12:01:00 Authoring application: Microsoft Office Word

MD5: 0a996ed08738ca0fed507a6e976e5e38 SHA-1: 6e8412f49d7147eb14d22be5469c36dc0ba0a47c SHA-256: a4fdfc91d580edf58e005123b1d53ee4e6f1c58c3d1ebdc2edb6e8ccea2e6f70

240 Risk Score

Malware Insights

MITRE ATT&CK

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

The sample contains VBA macros, including a Document_Open auto-execution macro, which is a common technique for initiating malicious actions upon opening the document. The presence of CreateObject calls and p-code execution further indicates malicious intent. ClamAV detection as 'Doc.Downloader.Generic' strongly suggests the macro's purpose is to download and execute a second-stage payload. The document body content is obfuscated and does not provide clear user-facing lures.

Heuristics 7

ClamAV: Doc.Downloader.Generic-9768640-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Generic-9768640-0
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` `41d5da1c3b5ac37936783dc0f6deb9a466b44f4833e7f3cfb69b25cedc4e48ca`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	6262 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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