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

Static analysis result for SHA-256 f4965c1fcd7e5104…

MALICIOUS

Office (OLE) / .DOC

56.0 KB Created: 2021-10-21 02:21:00 Authoring application: Microsoft Office Word
MD5: 14124094350a4280daa20a5328ec2954 SHA-1: 323f142b39d5a541d9ef68f98df26a28032ca12a SHA-256: f4965c1fcd7e5104b08e9aca3cc989f1a487f64ee791f013ef105f981d67e90d
142 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1105 Ingress Tool Transfer T1204.002 Malicious File

The Document_Open VBA macro is triggered upon opening the document. It constructs a command line that uses PowerShell's Start-BitsTransfer to download a second-stage executable from 'https://sec6ur1.x24hr.com/g/soleApp1.exe' to 'C:\Users\Public\Documents\assumeassume.exe'. The macro also writes a command to 'C:\Users\Public\Documents\reallyAmerican.cmd' and then executes it using GetObject('new:shell.application'). This indicates a downloader pattern aiming to fetch and run further malicious content.

Heuristics 5

  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open 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.
  • 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.

FilenameKindSourceSize
macros.bas
ca7b3d455582c344ba67dd52050f71c4742acf32f8330480d0026e58dd5c40ee		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 965 bytes

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