Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 60f42ac4298b42ec…

MALICIOUS

Office (OLE)

30.0 KB Created: 2008-07-16 17:04:00 Authoring application: Microsoft Word 10.0
MD5: c2dbf9a44c2d9815136bfee0e825349e SHA-1: c34ea94ec8973887907fbfe7ea302dfad192957e SHA-256: 60f42ac4298b42ecd166d91de0e715aae306bb070151e912072d6962a354b174
140 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1505.003 Server Software Component: Service Execution

The sample is a Microsoft Word document containing VBA macros. The critical ClamAV heuristic 'Doc.Trojan.Title-1' indicates malicious intent. The VBA macro attempts to infect other documents by copying its code and also attempts to modify the registry for persistence via the key HKCU\Software\Microsoft\Office\11.0\Word\Security\VBAWarnings. The document body itself is marketing text for an LED display, which is likely a lure.

Heuristics 3

  • ClamAV: Doc.Trojan.Title-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Title-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.
  • 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
8b4f3c0da8f19a947a457940c6447deaae03774d3cfd0f7df4547cfc16021ece
vba-macro oletools.olevba.extract_macros (decoded VBA source) 2886 bytes
Detection
ClamAV: Doc.Trojan.Title-1
Obfuscation or payload: unlikely