Office (OLE) malware analysis — malicious · f17e30fcbb606a05

MALICIOUS

Office (OLE)

154.9 KB Created: 2020-09-14 22:09:00 Authoring application: Microsoft Office Word

MD5: c57aaecb08feb4b15e4a1c8ae5178b7b SHA-1: 9b81b5169dab7e3e91d175d9fafff2b091590100 SHA-256: f17e30fcbb606a053ce0672cdff6f8b3402fb01346e7753abfd3add6f6fdfca4

240 Risk Score

Malware Insights

MITRE ATT&CK

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

The file contains VBA macros, specifically a Document_Open macro that is auto-executed. High-confidence heuristics indicate the use of CreateObject and p-code execution, suggesting the macro is designed to run arbitrary code. The truncated document body and embedded artifacts hint at obfuscated code. The primary intent appears to be downloading and executing a second-stage payload, as indicated by the macro's structure and the presence of a suspicious URL, though the exact payload and execution method are not fully discernible from the provided data.

Heuristics 7

ClamAV: Doc.Malware.Generic-9760527-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Generic-9760527-0
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` `bf2dc6e4793502154f28a14458af4f5198ccc48932a5641a4c34f7f1fcdc0c82`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	18582 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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