Office (OLE) / .DOCX malware analysis — malicious · acbb7afbd6807623

MALICIOUS

Office (OLE) / .DOCX

156.1 KB Created: 2021-01-04 18:59:00 Authoring application: Microsoft Office Word

MD5: caf1f0000cd78521781aad02651f7a6c SHA-1: 43376b7bf70014a2ae07c5d6251ce7af19f0c4ff SHA-256: acbb7afbd6807623f7b138be593f37aed6daf29c912342a71aa8b65fbb4a99f7

240 Risk Score

Malware Insights

MITRE ATT&CK

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

The sample contains a VBA macro that automatically executes upon opening the document, as indicated by the 'Document_Open' and 'CreateObject' heuristic firings. The ClamAV detection and the presence of a VBA macro strongly suggest a downloader functionality. The obfuscated document body text does not provide further insight into the specific lure, but the macro's execution is the primary indicator of malicious intent. No specific malware family could be confidently identified.

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` `28e0aab9def1820176582f12126397a14f2c858209766b704c735ce1d1db4cc2`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	7154 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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