Office (OLE) / .DOCX malware analysis — malicious · bf45d80a601a95a8

MALICIOUS

Office (OLE) / .DOCX

511.0 KB Created: 2012-06-07 18:25:00 Authoring application: Microsoft Office Word

MD5: dddd3ed6562a39e64566934015087764 SHA-1: 3a0e2b8630c341e3cd5496bc3fdcc51acf94d908 SHA-256: bf45d80a601a95a81e1e03d7140251fb0c2d377048099a79af8a189e5fd8f62b

220 Risk Score

Malware Insights

MITRE ATT&CK

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

The sample contains a high number of critical VBA macro heuristics, including references to Windows Script Host and CreateObject calls within a Document_Open auto-exec macro. This indicates the macro is designed to execute code, likely to download and run a second-stage payload. The presence of a long encoded blob and VBA auto-execution terms further supports this. No specific family could be identified.

Heuristics 7

Reference to Windows Script Host high SC_STR_WSCRIPT

Reference to Windows Script Host
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` `811aa299f5b2a6453f889bea7cb1ce5dc2a88d4e956e7270a6dca398a07bd53b`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	47363 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 38 long base64-like blob(s). Carved macro source contains an auto-exec entry point and execution/download terms.

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