Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 ae1bd8d85801edae…

MALICIOUS

Office (OLE)

241.5 KB Created: 2009-02-05 14:26:00 Authoring application: Microsoft Office Word
MD5: 4c43ce6779d1a47151a647dc19f43510 SHA-1: 5ed07f7e46ddc2bafa67e965fc607818c714924b SHA-256: ae1bd8d85801edae6404909f3cfa87fcd3a4684c5dbb7a858f34d4f081029d55
180 Risk Score

Malware Insights

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

The sample is an Office document containing a malicious VBA macro. The 'Document_Open' macro is automatically executed upon opening the document, and it uses 'CreateObject' to likely download and execute a secondary payload. The document body content appears to be a template for financial or business information, suggesting a lure for users to open and enable macros.

Heuristics 5

  • 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
12d392fa62842c2d3ca4753303c647cf7e569c7e01aaf5ab1f600cc7203bd8cb		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 82767 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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