Office (OLE) / .DOCX malware analysis — malicious · f861bf87ae94a289

MALICIOUS

Office (OLE) / .DOCX

208.2 KB Created: 2020-10-30 08:52:00 Authoring application: Microsoft Office Word

MD5: 142c7e568057aad9d0f0df723728cc7a SHA-1: 98c1055fc3ce2a662bccad7f39639066231e55f6 SHA-256: f861bf87ae94a28905aac6e55eb8f701589a30bcb2b6d452b8be5ce93f324bf0

240 Risk Score

Malware Insights

MITRE ATT&CK

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

The sample contains VBA macros, specifically a Document_Open macro that utilizes CreateObject, indicating it's designed to execute code upon opening. The ClamAV detection as 'Doc.Downloader' strongly suggests its purpose is to download and execute additional malware. While no specific family is identified, the technique points to a downloader malware.

Heuristics 7

ClamAV: Doc.Downloader.EmotetRed02224-9938637-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.EmotetRed02224-9938637-0
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` `3b4c2a22d0b516cd2d6141ac35df0fe0efc5e56c8812d3fa768461278bc89f15`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	17545 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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