Office (OLE) / .DOCX malware analysis — malicious · 5635c6c1b11323ea

MALICIOUS

Office (OLE) / .DOCX

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

MD5: 44bccbb7064a5e7ab462daef6e868abe SHA-1: 0f7b813354f84fce4e3e1366a6df27407ab85122 SHA-256: 5635c6c1b11323eac3eaef313d75146acf6ee296cb688dac46db0cb4d1e8897a

240 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1204.002 Malicious File T1140 Deobfuscate/Decode Files or Information

The critical ClamAV detection 'Doc.Downloader.Logan-9781905-0' strongly indicates malicious intent. The presence of VBA macros, specifically a Document_Open auto-execution macro that uses CreateObject, points to a downloader functionality. This macro likely attempts to download and execute a second-stage payload, a common tactic for malware distribution. The obfuscated document body content further supports the malicious nature of the file.

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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