Office (OLE) / .DOC malware analysis — malicious · f94840f979d4f6f5

MALICIOUS

Office (OLE) / .DOC

3.02 MB Created: 2022-02-10 09:16:00 Authoring application: Microsoft Office Word

MD5: b2be611be2465d538a82d01615066791 SHA-1: f82e90743f7b8720b71269f24cd48f774adad7e2 SHA-256: f94840f979d4f6f54535aac571aaaec132e3d844e525c949ef09402aa759171c

250 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1204.002 Malicious File T1071.001 Web Protocols

The sample is a malicious Word document containing a VBA macro that executes upon opening. The macro is designed to bypass security measures by presenting a fake work order to trick the user into enabling macros. Once enabled, it likely downloads and executes a second-stage payload, as indicated by the CreateObject and GetObject calls within the Document_Open subroutine. The presence of a large VBA macro and the 'SE_ENABLE_LURE' heuristic strongly suggest a downloader or droppper functionality.

Heuristics 9

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
Macro/content-enable lure medium SE_ENABLE_LURE

Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
Environ() call (env variable access) low OLE_VBA_ENVIRON

Environ() call (env variable access)
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://www.rondebruin.nl/win/winmail/Outlook/tips.htm
- http://schemas.openxmlformats.org/drawingml/2006/main
- http://schemas.microsoft.com/office/2006/metadata/contentType
- http://schemas.microsoft.com/office/2006/metadata/properties/metaAttributes
- http://schemas.microsoft.com/office/2006/metadata/properties
- http://www.w3.org/2001/XMLSchema
- http://schemas.microsoft.com/sharepoint/v3
- http://schemas.microsoft.com/sharepoint/v4
- http://schemas.microsoft.com/office/2006/documentManagement/types
- http://schemas.microsoft.com/office/infopath/2007/PartnerControls
- http://schemas.openxmlformats.org/package/2006/metadata/core-properties
- http://www.w3.org/2001/XMLSchema-instance
- http://purl.org/dc/elements/1.1/
- http://purl.org/dc/terms/
- http://schemas.microsoft.com/internal/obd
- http://dublincore.org/schemas/xmls/qdc/2003/04/02/dc.xsd
- http://dublincore.org/schemas/xmls/qdc/2003/04/02/dcterms.xsd
- http://schemas.openxmlformats.org/officeDocument/2006/customXml
- http://schemas.microsoft.com/sharepoint/v3/contenttype/forms
- http://schemas.openxmlformats.org/officeDocument/2006/bibliography
- https://openreach.office1.bt.com/sites/A55_Usage/Shared%20Documents/A55/A55%20Template.docm
- https://openreach.office1.bt.com/sites/A55_Usage/Shared

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `1cb9ccf57f19dbd83c46413f34ec787351081dd4691d9527e67ce95dcd3fd7f9`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	357250 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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