Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 ad5395a2b2672db2…

MALICIOUS

Office (OLE)

180.5 KB Created: 2017-05-28 22:10:00 Authoring application: Microsoft Office Word First seen: 2019-11-20
MD5: 4e137c3bd6471ac0846e614a1168541e SHA-1: 5b269f4ae3e9d272edec2fc73fa392e12f830c8a SHA-256: ad5395a2b2672db2f0be46555771d569950dd10c88c09ade9f5d7e3b2a49a6c9
70 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1055 Process Injection

The sample is an Office document with a VBA macro that references the WriteProcessMemory API, a common technique for process injection. While the VBA project itself contains no executable statements, the presence of this API call is highly suspicious and indicates a potential attempt to load a second-stage payload. No other malicious indicators were found.

Heuristics 3

  • Reference to WriteProcessMemory API critical SC_STR_WRITEPROCESSMEMORY
    Reference to WriteProcessMemory API
  • VBA project contains no executable statements low OLE_VBA_MACROS
    Document contains a VBA project, but extracted modules only contain attributes/options/comments and no executable statements.
  • 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://ns.adobe.com/xap/1.0/ In document text (OLE body)
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In document text (OLE body)
    • http://ns.adobe.com/photoshop/1.0/In document text (OLE body)
    • http://purl.org/dc/elements/1.1/In document text (OLE body)
    • http://ns.adobe.com/xap/1.0/mm/In document text (OLE body)
    • http://ns.adobe.com/xap/1.0/sType/ResourceEvent#In document text (OLE body)
    • http://ns.adobe.com/xap/1.0/sType/ResourceRef#In document text (OLE body)

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas vba-macro oletools.olevba.extract_macros (decoded VBA source) 342 bytes
SHA-256: eedcb9d8be0d9552cb4230115740a34c223533c4e7bba0cabfc18fd7e7b9a438
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "avenging"
Attribute VB_Base = "0{93548FC1-0ECA-460A-B15C-20073731C159}{A7D40A76-5C41-448F-A4F6-696D9477A262}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = False

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