Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 fa8cc2bad9298cb4…

MALICIOUS

Office (OOXML)

41.6 KB Created: 2021-06-22 12:43:05 UTC Authoring application: Microsoft Excel 16.0300
MD5: 9dfe90710196e50015e6e375d974bbe6 SHA-1: 469479d30cec05d68aaa502997c1b8abdb77d7a3 SHA-256: fa8cc2bad9298cb44b5010d2e13c116f7cb5da814ca80453cd9dfcecdc6b9c3f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.003 Windows Command Shell

The Excel document contains VBA macros that reference PowerShell and cmd.exe, indicating an attempt to execute arbitrary commands. The presence of a GetObject call further suggests the potential for object manipulation or execution of external code. The Decode64 function implies that obfuscated content is being decoded and executed, likely to download and run a second-stage 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
bf21e648c963059cc6ae6779318af51ee4b8b6eaf3e3c1d6c18a8b019d3c0272		 vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 35036 bytes
vbaProject_00.bin
f66beb823d5073ea712d77374ad9c67519af4e99c80d78a4adfed97590f45712		 vba-project OOXML VBA project: xl/vbaProject.bin 11264 bytes

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