Win.Trojan.Tristate-2 — Office (OLE) / .PPT malware analysis

Static analysis result for SHA-256 8f7829a180e74d6f…

MALICIOUS

Office (OLE) / .PPT

794.5 KB Created: 2006-05-03 04:34:34 Authoring application: Microsoft PowerPoint
MD5: 0c9dcc978f882a694d79cd6f2022670f SHA-1: fc020df3737eceb806a0686c1c887e169fb93167 SHA-256: 8f7829a180e74d6f9ccfb79cf0589c1fc53f571cace9ace14e7aca69f54da197
260 Risk Score

Malware Insights

Win.Trojan.Tristate-2 · confidence 90%

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

The sample is identified as Win.Trojan.Tristate-2 by ClamAV. Static analysis detected VBA macros, including CreateObject and GetObject calls, and an embedded file named 'macros.bas'. The presence of these elements, along with the ClamAV detection, strongly suggests the VBA macros are designed to download and execute a second-stage payload.

Heuristics 7

  • ClamAV: Win.Trojan.Tristate-2 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Tristate-2
  • 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.
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • GetObject call high OLE_VBA_GETOBJ
    GetObject call
  • 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.iec.ch

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
655b367c293200e65a14dd5436ead72e68c0e0038afe8fd131087c512a523cc1		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10679 bytes
Detection
ClamAV: Doc.Trojan.Tristate-1
Obfuscation or payload: likely
Carved artifact contains 12 Chr/ChrW string-construction calls. Carved macro source contains an auto-exec entry point and execution/download terms.

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