Valyria — Office (OLE) malware analysis

Static analysis result for SHA-256 1017a2def298bcf5…

MALICIOUS

Office (OLE)

37.5 KB Created: 2021-07-06 04:33:00 Authoring application: Microsoft Office Word
MD5: 015cd5ef0b28e66649a77db9cf73d8b5 SHA-1: 82972dc8470acd6141f7d1d8e9d6153836371e6d SHA-256: 1017a2def298bcf5c39c7664a4228164a0719196c4a4364d2286a9724ab78b87
162 Risk Score

Malware Insights

Valyria · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1105 Ingress Tool Transfer

The sample contains VBA macros that utilize CreateObject and CallByName functions, indicative of malicious activity. The ClamAV detection 'Doc.Downloader.Valyria-10033997-0' strongly suggests the Valyria family. The VBA script is designed to download and execute a second-stage payload from the URL 'https://feedbackportal.download/ecm/ibm/1626875104/feedback'.

Heuristics 5

  • ClamAV: Doc.Downloader.Valyria-10033997-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Valyria-10033997-0
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • CallByName call high OLE_VBA_CALLBYNAME
    CallByName call
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://feedbackportal.download/ecm/ibm/1626875104/feedback
    • http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
18e58ca9644ad789397b9183a606ed6c65314d90f1948337aade13175b902f8a		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2880 bytes

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