Powload — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 e98d6d03d74c3b12…

MALICIOUS

Office (OLE) / .DOC

153.8 KB Created: 2019-05-02 11:37:00 Authoring application: Microsoft Office Word
MD5: c3b2e23dc598d8082fbfa6a2d5deb390 SHA-1: 37f1b538fefe6c09eb0629c79b3c666579b21c7d SHA-256: e98d6d03d74c3b122f5a6eb72ddb2c864f825343a68e873179659ec499320532
260 Risk Score

Malware Insights

Powload · confidence 95%

MITRE ATT&CK
T1059.001 PowerShell T1218.011 Signed Binary Proxy Execution: Rundll32 T1059.005 Visual Basic

The file contains VBA macros, including an AutoOpen macro, which is a common delivery mechanism for malware. The critical heuristic OLE_VBA_WMI_PROCESS_CREATE indicates that the macros attempt to launch a process using WMI. ClamAV detection confirms this as Doc.Downloader.Powload-6960273-0, suggesting a Powload family downloader. The macros likely download and execute a second-stage payload.

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.Downloader.Powload-6960273-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Powload-6960273-0
  • 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
b62c612324507649d35aa05b4420f774cbd02953f775257da24eb8a4991e219a		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 32160 bytes

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