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

Static analysis result for SHA-256 28bc4257b36bcf06…

MALICIOUS

Office (OOXML) / .XLSM

2.06 MB Created: 2020-02-01 18:28:07 UTC Authoring application: Microsoft Excel 12.0000
MD5: 35ad73eb3c1e2d5f2cdbf5109e98dd06 SHA-1: 6e4a9097c35b51d1915ea910bebf965f6d668d6b SHA-256: 28bc4257b36bcf0688dbe3019b3e92fae0dc8b693f48d008a2fa8358602aaf61
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 document containing VBA macros, as indicated by the OOXML_VBA heuristic. ClamAV detection confirms it as Xls.Dropper.Valyria-10030821-0, a known dropper. The presence of an embedded OLE object and the incomplete scan of a large part suggest the file likely contains and executes a secondary malicious payload.

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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