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

Static analysis result for SHA-256 3f34e042326ae057…

MALICIOUS

Office (OLE) / .DOC

75.1 KB
MD5: 470298dda3c6604ee801c484d9000424 SHA-1: ffbf3f3dc00a39783c1f5e164691ef26887292bd SHA-256: 3f34e042326ae057f054ceeed57c175864b81a6cdb01800310e10bfd4ced335a
162 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File

The sample contains a VBA macro that executes a HTA file from a local path. The macro's `document_open` subroutine calls `iq`, which in turn uses `VBA.Shell` to execute the HTA file. The `iq` function reconstructs the command to be `c/ dmc c:\users\public\variableProcHtml.hta`. This indicates a likely attempt to download and execute a second-stage payload, disguised as a local file. The family is unknown due to the generic nature of the script.

Heuristics 5

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • 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.microsoft.com/aml/2001/core
    • http://schemas.microsoft.com/office/word/2010/wordprocessingCanvas
    • http://schemas.microsoft.com/office/drawing/2014/chartex
    • http://schemas.microsoft.com/office/drawing/2015/9/8/chartex
    • http://schemas.microsoft.com/office/drawing/2015/10/21/chartex
    • http://schemas.microsoft.com/office/drawing/2016/5/9/chartex
    • http://schemas.microsoft.com/office/drawing/2016/5/10/chartex
    • http://schemas.microsoft.com/office/drawing/2016/5/11/chartex
    • http://schemas.microsoft.com/office/drawing/2016/5/12/chartex
    • http://schemas.microsoft.com/office/drawing/2016/5/13/chartex
    • http://schemas.microsoft.com/office/drawing/2016/5/14/chartex
    • http://schemas.openxmlformats.org/markup-compatibility/2006
    • http://schemas.microsoft.com/office/drawing/2016/ink
    • http://schemas.microsoft.com/office/drawing/2017/model3d
    • http://schemas.microsoft.com/office/word/2003/wordml
    • http://schemas.microsoft.com/office/word/2003/auxHint
    • http://schemas.microsoft.com/office/word/2006/wordml
    • http://schemas.microsoft.com/office/word/2003/wordml/sp2
    • http://schemas.microsoft.com/schemaLibrary/2003/core

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
f2b0a64a0601471924ab68ce30f93bd7a7fb58af471400d3534f073698d31d28		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1518 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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