Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 2e0780e9826967fc…

MALICIOUS

Office (OLE)

472.0 KB Created: 2009-10-16 12:45:24 Authoring application: Microsoft Excel
MD5: 571538474b7fa8a43dea921959803a24 SHA-1: 4de932e13458ed4fa1256032ffa12ea63a872056 SHA-256: 2e0780e9826967fcd21d401f749d3702a53bc51f4c286a08c0dc4901a17c7db1
408 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.005 Visual Basic T1059.001 PowerShell T1105 Ingress Tool Transfer

The critical heuristic firing for CVE-2017-0199 indicates that this OLE2Link object is designed to fetch and execute a remote payload. The Workbook_Open macro and WScript.Shell usage further confirm that the VBA code within the Excel file is intended to download and execute a second-stage payload from the embedded URL. The reconstructed URL for the payload download is https://mportal.mouchel.com/Images/New Offer Details Form V1.1 05.05.10_tcm202-39210.xls.

Heuristics 11

  • OLE2Link / URL Moniker → remote loader — CVE-2017-0199 critical CVE likely CVE_2017_0199
    Document contains an embedded OLE link object whose URL Moniker points to a remote URL. When the host file is opened, Office follows the link, downloads the URL, and processes the response based on its Content-Type (HTA -> mshta.exe, RTF → Word, etc.) — the documented CVE-2017-0199 primitive. The URL extension is not a reliable filter; servers can return different payloads to Office's user agent.
  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • WScript.Shell usage critical OLE_VBA_WSCRIPT
    WScript.Shell usage
  • Reference to Windows Script Host high SC_STR_WSCRIPT
    Reference to Windows Script Host
  • Workbook_Open macro high OLE_VBA_WBOPEN
    Workbook_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
  • Environ() call (env variable access) low OLE_VBA_ENVIRON
    Environ() call (env variable access)
  • 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://mportal.mouchel.com/support_services/human_resources/forms/default.aspx
    • http://www.examplewebsite2.com

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
a5d5f447bc3b532fa1c3d612fdd1cb94dad174ee4ba682571390abbb967932fb		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 46808 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 3 shell/COM execution token(s). Carved macro source contains an auto-exec entry point and execution/download terms.

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