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

Static analysis result for SHA-256 b105bcda6b0c05ff…

MALICIOUS

Office (OLE) / .EXE

32.0 KB Created: 1999-03-11 18:14:32 Authoring application: Microsoft Excel
MD5: e4e9f6fb74803265a78d3ae85fd11a96 SHA-1: e878cddc9950d5d9b66e7c9b80782e9d90903c5a SHA-256: b105bcda6b0c05ffdc07f7fc205b5745f159710b3912e7d0518ec24b7e1620dd
260 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1105 Ingress Tool Transfer

The file is identified as malicious by ClamAV with signatures Win.Trojan.Tristate-2 and Doc.Trojan.Tristate-1. High-severity heuristics indicate the presence of VBA macros, CreateObject, and GetObject calls, suggesting the execution of code within the Office document. The extracted artifact 'macros.bas' also triggered static triage for suspicious VBA obfuscation and auto-execution. This points towards a downloader or droppper functionality, likely to fetch and execute a second-stage payload.

Heuristics 6

  • 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
22238a53c26cd7c89ba0b9d98b9bb120a65365cce5ef69c672649c54a7636640		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 9978 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.

Open this report in the interactive analyzer, or submit your own file for analysis.