Office (OLE) / .DOC malware analysis — malicious · d345c5f013afe61b

MALICIOUS

Office (OLE) / .DOC

83.4 KB Created: 2021-01-04 16:48:00 Authoring application: Microsoft Office Word

MD5: 922ff468b599a99bcba635e749c9eca1 SHA-1: cf75c8b005d2d1f861b4fcd29d55886c606d407a SHA-256: d345c5f013afe61b46427200ec5290efdb7f264dcd94cf2ac02763caf145ffc1

180 Risk Score

Malware Insights

MITRE ATT&CK

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

The sample contains a VBA macro that is automatically executed upon opening the document, indicated by the Document_Open and OLE_VBA_PCODE_AUTOEXEC_EXEC heuristics. The macro utilizes CreateObject, a common technique for executing arbitrary code. While the document body is heavily obfuscated, the presence of these heuristics strongly suggests the macro's purpose is to download and execute a secondary payload. No specific family could be identified.

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` `5413d2ebbaf274555cb07937d347084313a81ca863adee8961dbe3c4d35cf167`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	7277 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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