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

Static analysis result for SHA-256 49b354a965e81ed6…

MALICIOUS

Office (OLE) / .DOC

33.0 KB Created: 2025-09-28 23:54:00 Authoring application: Microsoft Office Word
MD5: f98ca6108fca456aedb95820fdab8358 SHA-1: 68cb24a4c1c241acb5f12065a1a9d99aa21d1282 SHA-256: 49b354a965e81ed6a0385672d3fd819a8c4bb2fd57c363e5e756846d10086379
500 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1059.005 Visual Basic T1204.002 Malicious File T1059.003 Windows Command Shell

The document contains a lure in Chinese, instructing the user to enable editing and macros to view protected content. Heuristics indicate the presence of VBA macros, specifically a Document_Open macro that utilizes Shell() and WScript.Shell to execute PowerShell. The embedded URL http://196.251.117.34/home/airforce.ps1 is likely the payload source. The ClamAV detection 'Doc.Downloader.Pwshell-10001336-0' further confirms its malicious nature as a downloader.

Heuristics 12

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • WScript.Shell usage critical OLE_VBA_WSCRIPT
    WScript.Shell usage
  • PowerShell reference in VBA critical OLE_VBA_PS
    PowerShell reference in VBA
  • ClamAV: Doc.Downloader.Pwshell-10001336-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Pwshell-10001336-0
  • Reference to PowerShell high SC_STR_POWERSHELL
    Reference to PowerShell
  • Reference to Windows Script Host high SC_STR_WSCRIPT
    Reference to Windows Script Host
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject 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.
  • 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://196.251.117.34/home/airforce.ps1
    • http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
6d5c8f699187c0f099efd7f6d63227c02f9adbf74f8b72cd28b01571635e3a03		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1784 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 4 shell/COM execution token(s). Carved macro source contains an auto-exec entry point and execution/download terms.

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