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

Static analysis result for SHA-256 12eff2abff1831f4…

MALICIOUS

Office (OLE) / .TXT

182.0 KB Created: 2000-06-03 15:38:00 Authoring application: Microsoft Word 8.0
MD5: 1309b670bb7a47284da168c3f6483234 SHA-1: f8e916d309a4c39ad8246ea5706662ca572f6291 SHA-256: 12eff2abff1831f4d7c11f3ca70cbd0895350f16d8193e7c6279e0d1b556695c
162 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample contains VBA macros, including a Document_Open macro, which is a common technique for malicious documents. The heuristic 'SE_CLIPBOARD_COMMAND_LURE' indicates the document instructs the user to interact with the clipboard in a way that suggests command execution. The extracted artifact 'macros.bas' is the VBA macro source. The ClamAV detection 'Doc.Trojan.Marker-2' further supports its malicious nature.

Heuristics 5

  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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://www.programmersheaven.com/zone5/index.htm
    • http://msdn.microsoft.com
    • http://www.crosswinds.net/~hackingtruths
    • http://webster.cs.ucr.edu/Page_asm/ArtofAssembly/ArtofAsm.html
    • http://developer.intel.com/design/litcentr/index.htm
    • http://hackingtruths.tripod.com

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
bba3de32f858a81cb9088d46dc6c4d0a013bd2267cb1366b0bddbeb5efd07d7c		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 4387 bytes
Detection
ClamAV: Doc.Trojan.Marker-2
Obfuscation or payload: unlikely

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