Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 8065bd3bdeafafd0…

MALICIOUS

Office (OOXML)

41.7 KB Created: 2021-06-22 12:43:05 UTC Authoring application: Microsoft Excel 16.0300
MD5: 4273b69faddb879610f4ead503b70750 SHA-1: 87d8799bcfe9868b0dac317af1446b8d38cc7216 SHA-256: 8065bd3bdeafafd0c53d43fd7e44a6a4b3aa01cb5aad46096a3a35f53d1650bc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

This OOXML document contains VBA macros that reference cmd.exe and PowerShell. The presence of GetObject calls and the critical OLE_VBA_PS heuristic suggest the macros are designed to execute external commands, likely for downloading and running a secondary payload. The Decode64 function indicates potential obfuscation of malicious code or URLs.

Heuristics 4

  • PowerShell reference in VBA critical OLE_VBA_PS
    PowerShell reference in VBA
  • GetObject call high OLE_VBA_GETOBJ
    GetObject call
  • cmd.exe reference in VBA high OLE_VBA_CMD
    cmd.exe reference in VBA
  • VBA project inside OOXML medium OOXML_VBA
    Document contains a VBA project — VBA macros present

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
ab0f50d46e4e20b09486da1363dc049ae1d1418c0fdbfb5c418af0550cf00fc3		 vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 34430 bytes
vbaProject_00.bin
f982496f6ff70c38709bc350ab8957b4ed50aaca56268d257324662f90ea53fa		 vba-project OOXML VBA project: xl/vbaProject.bin 11264 bytes

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