Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 0a54384d071cd1c6…

MALICIOUS

Office (OLE)

71.5 KB Created: 2010-06-21 12:51:00 Authoring application: Microsoft Word 8.0
MD5: 7109e9cddba1861847c58498937c30ea SHA-1: 828ec4e78a977e62ed575ee8adfc4b51a1b47431 SHA-256: 0a54384d071cd1c6ac4862489250399c3d23f7b88b2dd3eb652868abc5e7756d
140 Risk Score

Malware Insights

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

The sample is a Word document containing VBA macros, detected by ClamAV as Doc.Trojan.Ethan. The VBA script attempts to write its code to a file named 'c:\ethan.___' and potentially execute it, while also attempting to disable macro security warnings. This indicates a macro-based malware delivery mechanism.

Heuristics 3

  • ClamAV: Doc.Trojan.Ethan-20 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Ethan-20
  • 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.
  • 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
3b1c8c5b000f1779414a90c47528c0f2ec1e60971552426023026258e8815bcc		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 6170 bytes
Detection
ClamAV: Doc.Trojan.Ethan-1
Obfuscation or payload: unlikely

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