Office (OLE) / .DOC malware analysis — malicious · c912d0b0fa0ef94d

MALICIOUS

Office (OLE) / .DOC

154.0 KB Created: 2020-09-14 17:52:00 Authoring application: Microsoft Office Word

MD5: 88275ca4ea62905d08559050faace7dd SHA-1: b7c532b8d6cfedecdd5b4ebe6c7d27b8c82337fe SHA-256: c912d0b0fa0ef94d96426995e018e84d44e32f9e3779579e59a5086ea553d63f

240 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 OLE_VBA_DOCOPEN and OLE_VBA_PCODE_AUTOEXEC_EXEC heuristics. The macro uses CreateObject, suggesting it attempts to perform actions like downloading and executing a payload. The presence of the 'macros.bas' file further supports this. While the exact payload URL is not directly visible due to obfuscation, the overall behavior points to a macro-based downloader.

Heuristics 7

ClamAV: Doc.Malware.Generic-9760287-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Generic-9760287-0
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` `1c1ac6d8019d3317e1fd9360b916f40afe347161c1d653ef40242d0284d5107c`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	18510 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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