Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 028caf4694d332d5…

MALICIOUS

Office (OLE)

43.0 KB Created: 2009-05-06 08:37:00
MD5: fd671f8f56c445013ecf7f38c407f8e3 SHA-1: 3bb8ecd57bc1123ea29c1bdea281acccd8fcadb8 SHA-256: 028caf4694d332d5d19dafbc15d482f8391d2da2d50416eb4e5e5c225169dcd8
180 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1547.001 Registry Run Keys / Startup Folder

The sample is an Office document with a critical ClamAV detection, indicating malicious content. The presence of a Document_Open VBA macro is a strong indicator of malicious intent. The macro code attempts to inject itself into the Normal template, a common technique for establishing persistence or facilitating the execution of further malicious code. While the exact payload is not directly visible, this behavior strongly suggests the document is a loader for other malware.

Heuristics 4

  • ClamAV: Doc.Trojan.Locale-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Locale-1
  • 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
  • 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
43e469c9d0a235c1aa1c0f5f1cce74e3151ff730de28b2a88d62afd2c7164013		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1673 bytes
Detection
ClamAV: Doc.Trojan.Locale-1
Obfuscation or payload: unlikely

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