Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 7053b709e511fb85…

MALICIOUS

Office (OOXML)

44.7 KB Created: 2021-06-24 04:31:25 UTC Authoring application: Microsoft Excel 16.0300
MD5: ea0da9caf9148bc8454980949efd7aa2 SHA-1: 48d8bd3eee5a6cad198010736bed18c633dac2d2 SHA-256: 7053b709e511fb854c14939ea04556e2456159d2224ab92b032428fa2f6badaf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1059.003 Windows Command Shell T1204.002 Malicious File

The OOXML file contains VBA macros that reference PowerShell and cmd.exe, indicating an attempt to execute arbitrary commands. The presence of a GetObject call further suggests dynamic execution of code. The VBA code itself appears to be obfuscated, likely to conceal the download and execution of a secondary payload.

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
dbcecb1a0be4989c53956bf81f53e1d000dbc31fe9295badd61324e04abbf672		 vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 30749 bytes
vbaProject_00.bin
f9dc8e1ec394a18d29975361cba97364d23425dba981c75e996aa5dac453a9d1		 vba-project OOXML VBA project: xl/vbaProject.bin 10752 bytes

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