Office (OLE) / .DOCX malware analysis — malicious · d43356345eda22fd

MALICIOUS

Office (OLE) / .DOCX

161.1 KB Created: 2020-09-17 22:23:00 Authoring application: Microsoft Office Word

MD5: 77cdd737371dc32b11b3b2ee4af589d9 SHA-1: 90943b01f05fac75ec790785f6115bf34926ab6e SHA-256: d43356345eda22fd3100b860df7cd151651be7931f0b01eeedf055aad895cbe6

240 Risk Score

Malware Insights

MITRE ATT&CK

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

The critical ClamAV detection and high-severity heuristics for VBA macros, specifically the Document_Open auto-execution and CreateObject calls, strongly indicate malicious intent. The presence of a VBA macro named 'macros.bas' further supports this. The primary function appears to be downloading and executing a secondary payload, as suggested by the 'Doc.Downloader' classification.

Heuristics 7

ClamAV: Doc.Downloader.Generic-9763113-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Generic-9763113-0
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` `98a29bdf4abf669a96318f520c9bfe3aa10e950f57f7c585bdcdcff6e6ad90b2`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	21952 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.

Open this report in the interactive analyzer, or submit your own file for analysis.