Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 c608c764bfa21644…

MALICIOUS

Office (OLE)

62.0 KB Created: 2006-07-11 04:41:00 Authoring application: Microsoft Word 9.0
MD5: 5b2e3f83f6f3f0b8a703eff43f037caa SHA-1: 9859aae4ca1f2e785cb368c8b3fddea344a444ca SHA-256: c608c764bfa21644f8eba8d78906fdf9ec15c1ed8e8b3ee8e9c8f43b524f62a6
180 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV with the signature Doc.Trojan.Xaler-1. Static analysis detected VBA macros, specifically a Document_Open macro, indicating that the document is designed to execute code upon opening. The document body, presented as an educational lesson about the lakes of Kazakhstan, serves as a lure to encourage the user to enable macros. The presence of the Document_Open macro strongly suggests an attempt to download and execute a secondary payload.

Heuristics 4

  • ClamAV: Doc.Trojan.Xaler-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Xaler-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
1dc44b277ae09b4b0c5439db1cc19c48bce5d0aab418e2c2e228e1c8b3d9b8e1		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2587 bytes
Detection
ClamAV: Doc.Trojan.Xaler-1
Obfuscation or payload: unlikely

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