Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 f4d43448b3732538…

MALICIOUS

Office (OOXML)

41.6 KB Created: 2021-06-22 12:43:05 UTC Authoring application: Microsoft Excel 16.0300
MD5: 62aff460e1dd98fd77e1d6960bc34e0b SHA-1: ec9ae43afdfbbcc81fb6aab7b6bbb49805cfc778 SHA-256: f4d43448b3732538a67a0959f42d164333f5992a1cdc1432e6105e5e73b1a2a0
160 Risk Score

Malware Insights

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

The file is an Office document containing VBA macros. Heuristics indicate the presence of a VBA project, a reference to PowerShell, and calls to GetObject and cmd.exe. The VBA macro code appears to be obfuscated, but the presence of PowerShell and cmd.exe references strongly suggests it's designed to execute a secondary payload. The GetObject call could be used to instantiate COM objects for further execution.

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
3257f9c49f4858812bbc13016c597273229c2eca1ad4e37b5c3a897489939d47		 vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 35036 bytes
vbaProject_00.bin
daf51554afa3b955f2ac020c78cb36d19c709a7e1114366446dda6c3653e5c6a		 vba-project OOXML VBA project: xl/vbaProject.bin 11264 bytes

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