Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 20c8ee1f270629c8…

MALICIOUS

Office (OOXML)

10.6 KB Created: 2015-06-05 18:17:20 UTC Authoring application: Microsoft Excel 16.0300 First seen: 2021-05-23
MD5: 48d9222af602a2e86e2a07952f76bbec SHA-1: 6dc5989fd58680e93e2dbf48713f24a6cc77a158 SHA-256: 20c8ee1f270629c8211d2489176cead4d19e5e8c75f4dfff9ec652ce23966461
120 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.001 PowerShell

The sample contains a critical heuristic indicating a malicious DDE link within an OOXML spreadsheet. This link is configured to execute a PowerShell command that downloads and executes a second-stage payload from 'attacker_server/shell.exe'. This indicates a clear attempt to download and run arbitrary code from a remote server.

Heuristics 2

  • ClamAV: Xml.Exploit.DDE_Abuse-9987933-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Xml.Exploit.DDE_Abuse-9987933-1
  • Spreadsheet DDE link launches a dangerous command critical OOXML_SPREADSHEET_DDE_MALICIOUS
    Excel workbook contains an externalLinks/ddeLink entry whose ddeService/ddeTopic launches a dangerous executable. This is SpreadsheetML DDE command execution, distinct from WordprocessingML DDE field instructions.

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