Office (OLE) / .DOCX malware analysis — malicious · 587b4ff6aa87e0dc

MALICIOUS

Office (OLE) / .DOCX

190.0 KB Created: 2020-10-22 16:39:00 Authoring application: Microsoft Office Word

MD5: 4f5bc52d892f1f5aba0e8c0855b4ca4f SHA-1: aa7ceb0f81736e13d703b5326bb1394baf2ba5c7 SHA-256: 587b4ff6aa87e0dcca571d629a148fc037f63b8882d151964c91574f6e065b9e

240 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The file contains VBA macros, specifically a Document_Open macro designed to execute automatically. This macro uses CreateObject, a common technique for downloading and executing further payloads. The ClamAV detection name 'Doc.Downloader.Logan-9781905-0' strongly suggests a downloader functionality. The obfuscated document body text, while unreadable, likely serves as a lure to encourage macro execution.

Heuristics 7

ClamAV: Doc.Downloader.Logan-9781905-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Logan-9781905-0
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` `e27d29142f52c9bbf22d80d41e42b63f47a37f20e4370d5fd51155547914517e`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	22921 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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