Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 8b3da8b6a1e99d8d…

MALICIOUS

Office (OOXML)

41.6 KB Created: 2021-06-22 12:43:05 UTC Authoring application: Microsoft Excel 16.0300
MD5: 226ba32ce169975d6b577f75ea9d5b62 SHA-1: d49bf89a57a0038b86a80f2c104077dc88184935 SHA-256: 8b3da8b6a1e99d8d3e451732b67cc0971dda8bb5df5329244a714964973ab168
160 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1059.005 Visual Basic T1566.001 Spearphishing Attachment

This Excel document contains VBA macros that reference PowerShell and cmd.exe, indicating an attempt to execute arbitrary code. The presence of a GetObject call further suggests the potential for object manipulation or execution of external components. The VBA code itself appears to be heavily obfuscated, making it difficult to determine the exact payload, but the overall pattern points to a downloader or initial execution stage.

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
f6ea26a22838f9cd4e57ebb461dd0bff9f56965dc65a1cad5ea99deba7f13220		 vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 35036 bytes
vbaProject_00.bin
bea65cf8346065df8d7ebd927531a7dbb49a6d69ea0b594a9399f6460c5fb022		 vba-project OOXML VBA project: xl/vbaProject.bin 11264 bytes

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