Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 194dbbb81721e732…

MALICIOUS

Office (OLE)

42.5 KB Created: 2002-01-10 06:16:00 Authoring application: Microsoft Word 8.0
MD5: 6da2ee6a01619fc8017dcdda847c391f SHA-1: 678a0a9af8e425dc1ff73e3523636e8a099274e8 SHA-256: 194dbbb81721e732094ea5785b19545fef2c32d9c5948b02104b608e0118a917
220 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The file contains VBA macros, including AutoOpen and AutoClose, which are commonly used to execute malicious code upon opening or closing a document. The presence of ClamAV detections for 'Legacy.Trojan.Agent-34741' and 'Doc.Trojan.Bablas-4' strongly indicates malicious intent. The macros themselves appear to be designed to bypass security features and potentially download further payloads, although the exact mechanism is obfuscated.

Heuristics 5

  • ClamAV: Legacy.Trojan.Agent-34741 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Legacy.Trojan.Agent-34741
  • 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.
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen macro
  • Auto_Close macro high OLE_VBA_AUTOCLOSE
    Auto_Close macro
  • 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
abc0638c6cd245e830ac2a6f80dca74b59ca17502141306373b126a141f800f9		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 5600 bytes
Detection
ClamAV: Doc.Trojan.Bablas-4
Obfuscation or payload: unlikely

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