Office (OLE) / .DOCX malware analysis — malicious · c47dd140c6bc057d

MALICIOUS

Office (OLE) / .DOCX

171.5 KB Created: 2021-01-22 12:16:00 Authoring application: Microsoft Office Word

MD5: 904ab4a54c5fd91fab5727248e27c140 SHA-1: 6291e60663a7fac5f5351018560bf351651057cc SHA-256: c47dd140c6bc057daadb9ee597e65f4354bd84521ed7631a0f100eb027f6adb8

240 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample is a Microsoft Word document containing a malicious VBA macro. The 'Document_Open' macro is automatically executed upon opening the document, which is a common technique for initial execution. The critical ClamAV detection and high-severity heuristics for VBA auto-execution and CreateObject calls strongly indicate malicious intent, likely to download and execute a second-stage payload.

Heuristics 7

ClamAV: Doc.Malware.Emodldr-10033989-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emodldr-10033989-0
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` `57c5fc8ce17815567da52642c52710073a1f26f502815de80b26d094034f9496`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	16557 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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