Malicious Office (OLE) / .DOC — malware analysis report

Static analysis result for SHA-256 e41b401b84ebb37d…

MALICIOUS

Office (OLE) / .DOC

183.5 KB Created: 2021-04-28 11:40:00 Authoring application: Microsoft Office Word
MD5: 1f0d1b00f50b44495cdaf1eb1a179c52 SHA-1: f87e8ced70d8e33f988faa756d6f30e0e00f05af SHA-256: e41b401b84ebb37d5a82748e27d27a6dad216475bc455b3e88d9d72ffa02bc7b
220 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1105 Ingress Tool Transfer

The sample contains a Document_Open VBA macro that utilizes CreateObject to execute Windows Script Host, indicating a downloader functionality. This macro likely downloads and executes a second-stage payload from the provided URL. The presence of VBA auto-execution with execution tokens strongly suggests malicious intent.

Heuristics 7

  • Reference to Windows Script Host high SC_STR_WSCRIPT
    Reference to Windows Script Host
  • 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://scaladevelopments.scaladevco.com/13Z/IMG_8401_302_1076.ex
    • http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
9cfc4bad9e21a35f9e5ef8130ddb6f9c1b515c97958c571d2c5340d0dd28f9e7		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 909 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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