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

Static analysis result for SHA-256 b62fcf446710d458…

MALICIOUS

Office (OLE) / .DOC

178.6 KB Created: 2019-05-09 17:45:00 Authoring application: Microsoft Office Word
MD5: 917cd49ddb5a776e5eddcf7ab752ccf6 SHA-1: b7e921097bbc0e8ed0fa40e8f44cafe7a70e0787 SHA-256: b62fcf446710d4584e59fb71e9556e195cf92a3bb0c564da33fec66d7dd80bc5
260 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1218 Signed Binary Proxy Execution

The sample contains a malicious VBA macro that is triggered by the AutoOpen function. This macro utilizes GetObject and CreateObject to launch Win32_Process via WMI, indicating an intent to execute arbitrary code. ClamAV identifies this as Doc.Dropper.Agent-6966347-0, suggesting a dropper functionality.

Heuristics 7

  • VBA WMI Win32_Process launcher critical OLE_VBA_WMI_PROCESS_CREATE
    VBA macro builds or references a WMI moniker for Win32_Process and invokes .Create to start a command. This is a high-confidence macro execution chain that often hides the WMI class name through string concatenation or helper functions.
  • ClamAV: Doc.Dropper.Agent-6966347-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.Agent-6966347-0
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen 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
bff1278789939802192f8567fd3ae09319a082b154df7cfdc16c3593adaebb9e		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 43117 bytes

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