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

Static analysis result for SHA-256 a0a9aed8146e0511…

MALICIOUS

Office (OLE) / .DOC

36.0 KB Created: 2025-03-04 01:51:00 Authoring application: Microsoft Office Word
MD5: b316bdb9242461a863e2116a591f935f SHA-1: d22d1709ef3ae643289ab5cdb1f8aec6110e3504 SHA-256: a0a9aed8146e0511299e3e05fc29c81e1a8e70cf65a31b3e0fd827e1c7352972
320 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1218.011 System Binary Proxy Execution: Rundll32 T1059.005 Visual Basic T1059.003 Windows Command Shell

The sample is a malicious OLE document containing VBA macros. The AutoOpen and Document_Open macros are triggered upon opening, and the critical OLE_VBA_WMI_PROCESS_CREATE heuristic indicates the use of WMI to launch a process. This is further supported by the SC_STR_POWERSHELL and SE_LOLBIN_RUN_COMMAND heuristics, suggesting the execution of commands via PowerShell or other Windows scripting tools. The embedded URL http://192.168.45.231/AllInOne.css).Content is likely used to download and execute a second-stage payload.

Heuristics 9

  • 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.
  • Reference to PowerShell high SC_STR_POWERSHELL
    Reference to PowerShell
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen macro
  • 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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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://192.168.45.231/AllInOne.css).Content
    • http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
e6f0705c3dc477d6c7abea8b97d8a33a8892aa3d84daeb632bd961a6090f5a90		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 592 bytes

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