Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 f78730c6586f1878…

MALICIOUS

Office (OOXML)

41.5 KB Created: 2021-06-22 12:43:05 UTC Authoring application: Microsoft Excel 16.0300
MD5: 3ade3a4042f4b0aaa63bc099518ab034 SHA-1: 8b559d77cd294f99bb41dff474a492018074b5ab SHA-256: f78730c6586f18787037fd56da02812379141d125da45f12fed2678d7e1d5c7b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1059.003 Windows Command Shell T1566.001 Spearphishing Attachment

The Excel document contains VBA macros that reference cmd.exe and PowerShell. The critical heuristic 'OLE_VBA_PS' indicates a PowerShell reference within the VBA code. The 'GetObject' and 'cmd.exe' references suggest the macro is designed to execute external commands, likely to download and run a second-stage payload. The presence of a VBA project and macro file are included as IOCs.

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
d33d70254e7593cb1348ec9f9c2bd1e1b62bae3b68cde26b81a395e191ede1ce		 vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 34430 bytes
vbaProject_00.bin
62e3149eecf90579a4d99063c0cc721d6d9fcf6753df206d580955b87198a895		 vba-project OOXML VBA project: xl/vbaProject.bin 11264 bytes

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