Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 f59d98264710149a…

MALICIOUS

Office (OLE)

244.0 KB Created: 2000-12-25 07:18:00 Authoring application: Microsoft Word 8.0
MD5: 54531678fd139aa7e9f48dbb05d6c50b SHA-1: 22c166957ce29639c3a59ad23b137a47c6b1dc2d SHA-256: f59d98264710149a58ca3394e239bbbe48778a3b9d582eaee173b8931752449a
300 Risk Score

Malware Insights

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

The file contains VBA macros, specifically a Document_Open macro that utilizes CreateObject to execute p-code. This indicates an attempt to run arbitrary code upon opening the document. ClamAV detections for 'Win.Trojan.Psycho-3' and 'Doc.Trojan.Melissa-4' further confirm its malicious nature. The embedded URLs are likely used for command and control or to download additional malicious components.

Heuristics 8

  • ClamAV: Win.Trojan.Psycho-3 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Psycho-3
  • 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
  • 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
  • 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.handres.com
    • http://www.AllWireless.com
    • http://www.x10.com/support/technology1.htm
    • http://www.x10.com/support/support_manuals.htm#Home
    • http://www.x10.com/support/technology1.htmhttp://www.x10.com/support/support_manuals.htm#Home

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
1f9d28c250a025e90e777a808d2c7b2256593dbc2566c525a466fbda9991e951		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 12869 bytes
Detection
ClamAV: Doc.Trojan.Melissa-4
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

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