Xls.Dropper.Valyria-10030821-0 — Office (OOXML) / .XLSM malware analysis

Static analysis result for SHA-256 f86c3bcdcbdc824f…

MALICIOUS

Office (OOXML) / .XLSM

2.66 MB Created: 2020-02-01 18:28:07 UTC Authoring application: Microsoft Excel 12.0000
MD5: 057b9fdb3e858450e8ed79e0fdb831a8 SHA-1: 8005b46b4452b2d80f2dc87bd4d73f6107b08ab6 SHA-256: f86c3bcdcbdc824fa4b223f898b09d86fc67669e7517209a7515c86ef887c129
102 Risk Score

Malware Insights

Xls.Dropper.Valyria-10030821-0 · confidence 95%

MITRE ATT&CK
T1059 Command and Scripting Interpreter T1059.005 Visual Basic

The file is an XLSM Excel spreadsheet containing VBA macros, as indicated by the OOXML_VBA heuristic. ClamAV detection identifies it as Xls.Dropper.Valyria-10030821-0, suggesting it functions as a dropper. The presence of an embedded OLE object and a large skipped part further supports its malicious nature as a potential downloader for a secondary stage.

Heuristics 4

  • ClamAV: Xls.Dropper.Valyria-10030821-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Xls.Dropper.Valyria-10030821-0
  • VBA project inside OOXML medium OOXML_VBA
    Document contains vbaProject.bin — VBA macros present
  • Embedded OLE object medium OOXML_OLE_OBJECT
    Document contains an embedded OLE object
  • Large OOXML part skipped info SCAN_INCOMPLETE
    One or more high-value OOXML parts exceeded the scanner's per-entry size cap and may not have been fully inspected.

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