Office (OLE) / .DOC malware analysis — malicious · 503a0e2f91b23d62

MALICIOUS

Office (OLE) / .DOC

62.0 KB Created: 2020-03-09 15:03:00 Authoring application: Microsoft Office Word

MD5: e5db423426e09cae1deb89a1c9f0a020 SHA-1: 5f58107f3668fa555b978656b9d184e93be8e0f1 SHA-256: 503a0e2f91b23d62d132afe73ea8ef7abb831876cdd79f5977430f681d5ca664

340 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1218.011 Signed Binary Proxy Execution: Rundll32 T1059.003 Windows Command Shell T1059.005 Visual Basic

The sample is a malicious DOC file containing VBA macros. The critical heuristic OLE_VBA_WMI_PROCESS_CREATE indicates that the Document_Open macro attempts to launch a process using WMI's Win32_Process.Create method. This is a common technique for executing arbitrary code, often used to download and run further malicious payloads. The presence of a Document_Open macro and the use of CreateObject/GetObject point to an auto-executing malicious script.

Heuristics 9

VBA WMI Win32_Process launcher critical OLE_VBA_WMI_PROCESS_CREATE

VBA macro builds or references a WMI moniker for Win32_Process and invokes .Create to start a command. This is a high-confidence macro execution chain that often hides the WMI class name through string concatenation or helper functions.
ClamAV: Doc.Malware.Generickdz-7641643-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Generickdz-7641643-0
Document_Open macro high OLE_VBA_DOCOPEN

Document_Open macro
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
GetObject call high OLE_VBA_GETOBJ

GetObject 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` `28ee6b9d34872a02fe9d2d76e37d0db2c44ae8e1121c01a063ebfc01ba124747`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	3113 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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