Office (OLE) / .DOC malware analysis — malicious · 911b2d10bf53b8c6

MALICIOUS

Office (OLE) / .DOC

76.5 KB Created: 2021-12-27 11:02:00 Authoring application: Microsoft Office Word

MD5: 3c6670d19412300e5d92027d911c0c1d SHA-1: d07589d63af6d8624746dafcbeaa90705ba5f281 SHA-256: 911b2d10bf53b8c620eed5ad7f8dd4c9b48a3d8cf2ea735c8bd72356bb5a349a

242 Risk Score

Malware Insights

MITRE ATT&CK

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

The sample contains VBA macros, including a Document_Open auto-execution function, which is a common technique for initial execution. The script reconstructs a filename 'monitorMonitorGigabyte.h' and uses CreateObject to execute it, indicating a downloader functionality. The presence of 'CreateObject("wscript.shell").exec(...)' strongly suggests the execution of a second-stage payload. The ClamAV detection also confirms its malicious nature as a downloader.

Heuristics 7

ClamAV: Doc.Downloader.WordBlueFont12213-9918948-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.WordBlueFont12213-9918948-0
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` `e2aa3bd25ede7c45504eee2e837bae5ef5b2b961d7c003b98228486dbd18587d`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	972 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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