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

Static analysis result for SHA-256 b4c14514e21c1283…

MALICIOUS

Office (OLE) / .EXE

33.5 KB Created: 2000-03-27 20:14:00 Authoring application: Microsoft Word 8.0
MD5: 58cd41fe0dc0a421f43e838c1e548783 SHA-1: ec50baa08fd796e1b09429dd08bb0f79534278a3 SHA-256: b4c14514e21c128343e7545a0f5f8ff08f0001994d6e79b47c5f72fa15388f2a
300 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV with multiple signatures, including Win.Trojan.Psycho-3 and Win.Trojan.wmvg-1 on an extracted artifact. It contains VBA macros, specifically a Document_Open macro that utilizes CreateObject, indicating an attempt to execute malicious code upon opening. The presence of these elements strongly suggests a trojan delivery mechanism.

Heuristics 7

  • 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
6e401c183a7ee471744e627d2030c2d8326020f17122e0b912b96b5c0bffeadb		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 4812 bytes
Detection
ClamAV: Win.Trojan.wmvg-1
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

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