Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 6bdd3091bf111fd4…

MALICIOUS

Office (OOXML)

41.6 KB Created: 2021-06-22 12:43:05 UTC Authoring application: Microsoft Excel 16.0300
MD5: a6028edc26a534de7939880a47117adf SHA-1: e0870f3b5e0ea56ce2ec0701c67667e1995a69e3 SHA-256: 6bdd3091bf111fd417225883ceea5fe0092a5e245c491b773a234964abd090d6
160 Risk Score

Malware Insights

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

The OOXML file contains VBA macros that reference PowerShell and cmd.exe. The GetObject call suggests an attempt to load and execute external code. The VBA code itself appears to be heavily obfuscated, making it difficult to determine the exact payload, but the presence of these indicators strongly suggests a downloader or dropper functionality.

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
eceea8b0cafdc44045cd3f6d2f207c15ae86108a357c5a83c3fd6bb60ad8bb7a		 vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 35036 bytes
vbaProject_00.bin
34a7e342feb72a0cbfad2f7e76834e5078615447af969b19de53550e67187f05		 vba-project OOXML VBA project: xl/vbaProject.bin 11264 bytes

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