Office (OLE) / .DOC malware analysis — malicious · 31674a6f9a3af9c3

MALICIOUS

Office (OLE) / .DOC

212.4 KB Created: 2020-09-21 12:09:00 Authoring application: Microsoft Office Word

MD5: 0d0f08f55cc5a5bf2da6ad9e11be0cbd SHA-1: 2135917c366cf72b4d98f189d840b387541aedcd SHA-256: 31674a6f9a3af9c35d63550ad3d2bb37c910304d96d7ed56a1d5c418b0936009

280 Risk Score

Malware Insights

MITRE ATT&CK

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

The sample is a malicious Microsoft Office document containing VBA macros. The 'Document_Open' macro is present and utilizes 'CreateObject' and 'GetObject' calls, indicating it's designed to execute code upon opening. The ClamAV detection as 'Doc.Downloader.Generic' strongly suggests the macro's purpose is to download and execute a second-stage payload. No specific family could be identified, but the technique is common for initial access.

Heuristics 8

ClamAV: Doc.Downloader.Generic-9764508-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Generic-9764508-0
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` `cea30dbaa44bcaf57fbcd15c35be69cfffbad74d3b69c3addc059acf5ad797f9`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	19026 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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