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

Static analysis result for SHA-256 a10bf5feb936b7dd…

MALICIOUS

Office (OLE) / .DOCX

53.5 KB Created: 2022-04-26 10:03:00 Authoring application: Microsoft Office Word
MD5: 1e047800a26b60cfe6807a24f20ca128 SHA-1: 0e03af9aea6c45591de6ba3b7d738b6ead7acb3e SHA-256: a10bf5feb936b7ddc7ffa53fde64841983322d1d80add86e5b4c89b224715a25
280 Risk Score

Malware Insights

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

The sample contains VBA macros, including an AutoOpen macro that utilizes the Shell() function. This function is used to execute a PowerShell script, as indicated by the 'SC_STR_POWERSHELL' heuristic. The script is likely designed to download and execute a second-stage payload from the embedded URL 'http://192.168.56.109/download/dropper.ps11'. The presence of these elements strongly suggests a malicious intent to compromise the user's system.

Heuristics 8

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • Reference to PowerShell high SC_STR_POWERSHELL
    Reference to PowerShell
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen 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 http://192.168.56.109/download/dropper.ps11
    • http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
6cc70f62f580066b934788fbec8b5178b5e142cebf947a64d674abee29506c3a		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 638 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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