Office (OLE) / .DOC malware analysis — malicious · e3af5d9186e98f7e

MALICIOUS

Office (OLE) / .DOC

300.8 KB Created: 2019-03-12 07:28:00 Authoring application: Microsoft Office Word

MD5: 9d26c370902244e78ceeaccd438022a7 SHA-1: 43786c4f411bb5b685dd4802eb38aa8cdb2e00e2 SHA-256: e3af5d9186e98f7e7fcfceb13d38a4f37fe799a0203dee369e1c08ccc66be979

300 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1218.011 System Binary Proxy Execution: Rundll32

The sample contains a high-confidence VBA macro that utilizes AutoOpen and GetObject to execute a payload. Specifically, it leverages WMI's Win32_Process launcher to create a new process. This is a common technique for macro-based malware to download and execute a second-stage payload. The ClamAV detection name 'Doc.Downloader.00536d-6890741-0' further supports its role as a downloader.

Heuristics 8

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.Downloader.00536d-6890741-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.00536d-6890741-0
AutoOpen macro high OLE_VBA_AUTOOPEN

AutoOpen macro
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` `3133ddbdd299942ee6566dc33513aed4f819a7f91b9becb9dd4ebef1527ed65e`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	87666 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 220 Chr/ChrW string-construction calls.

Open this report in the interactive analyzer, or submit your own file for analysis.