Office (OLE) / .DOC malware analysis — malicious · 3620535770404bbc

MALICIOUS

Office (OLE) / .DOC

231.6 KB Created: 2020-09-04 19:50:00 Authoring application: Microsoft Office Word

MD5: bb5e9eb09c7d0030a20b1bb54aa05c95 SHA-1: f9bc4f027a6e775d911baaead4a8716e9b40f5d2 SHA-256: 3620535770404bbcb168425ba9d65c3aa08f913b34046cecc918b4cd7b0ca357

180 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic for Applications T1059.001 PowerShell T1569.002 Shell Execution

The sample is a malicious OLE document containing a VBA macro. The 'Document_Open' macro is configured to execute automatically upon opening the document. This macro utilizes 'CreateObject' to execute a PowerShell command, which is a common technique for downloading and executing further stages of a payload. The obfuscated nature of the document body and the presence of auto-executing VBA code strongly indicate a malicious intent.

Heuristics 6

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` `c1d66a9f5277c87c1fb8a50d1e2eaae9183beba3be4ed2c96c8dbd3410b75141`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	14344 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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