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

Static analysis result for SHA-256 ff53236fb6543c5e…

MALICIOUS

Office (OLE) / .DOC

69.0 KB Created: 2024-11-25 15:56:00 Authoring application: Microsoft Office Word
MD5: 15928c3d8ca17dae7324bc7280c2a451 SHA-1: c311368341032e905a1b7319a9373ec267ed0d78 SHA-256: ff53236fb6543c5ef9e25244d43b3e2e93c2bd3d76354e8c14327563a50ebdf0
280 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File T1059.005 Visual Basic

The sample contains a VBA macro that triggers on document open. This macro utilizes the Shell() function to execute a PowerShell command. The PowerShell command is designed to download and execute a file from the URL https://onrywa.net/xwadmin.exe. This indicates a downloader or droppper functionality.

Heuristics 8

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • Reference to PowerShell high SC_STR_POWERSHELL
    Reference to PowerShell
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • 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
  • 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 https://onrywa.net/xwadmin.exe
    • http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
9f16e8e975010206bcea9184069efd2b4dc712c3638a3592024bbfac5153fdfc		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 626 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

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