Valyria — Office (OLE) malware analysis

Static analysis result for SHA-256 7573729345f787a5…

MALICIOUS

Office (OLE)

37.5 KB Created: 2021-07-06 04:33:00 Authoring application: Microsoft Office Word
MD5: 55eecedf8b662653b65ba780ebdf7fe0 SHA-1: fd5864bfceebe809c986ba1fa87f0059c2943f43 SHA-256: 7573729345f787a51f7918f2047f2cddc6f68e3b07eb6a09b373b966b3703385
162 Risk Score

Malware Insights

Valyria · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1105 Ingress Tool Transfer T1566.001 Spearphishing Attachment

The sample is identified as malicious by ClamAV with the signature 'Doc.Downloader.Valyria-10033997-0', indicating it belongs to the Valyria family. The VBA macros contain 'CreateObject' and 'CallByName' calls, which are used to instantiate and interact with objects like 'MSXML2.ServerXMLHTTP'. The script's 'send' subroutine is designed to POST data to the URL 'https://feedbackportal.download/ecm/ibm/1626876095/feedback', suggesting it downloads and executes a second-stage payload. The 'Document_Close' subroutine also attempts to show a form and display an error message, likely as a distraction or part of the lure.

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/1626876095/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

Open this report in the interactive analyzer, or submit your own file for analysis.