Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 7b2ad3afa89f698b…

MALICIOUS

Office (OOXML)

41.5 KB Created: 2021-06-22 12:43:05 UTC Authoring application: Microsoft Excel 16.0300
MD5: a18b6112a03f8ebccf2929c2534472f7 SHA-1: 41e867d812239eced3a12b281efca291c744b9dc SHA-256: 7b2ad3afa89f698b057b3e4761b64fd42ee463ea94c7ce8ebf2338b8bf94c475
160 Risk Score

Malware Insights

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

The OOXML document contains VBA macros that reference cmd.exe and PowerShell. The GetObject call and the presence of VBA macros suggest an attempt to execute arbitrary code. The VBA code includes a Base64 decoding function, indicating a likely downloader or stager for 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
af5be7fcf4cb304db8ffb9698402b6cc14bda063d4e86984b830bab04f07ec10		 vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 34430 bytes
vbaProject_00.bin
41354562f3ff31ed40e6034da121ce4310105de39d08fc43892201fcf0223a3b		 vba-project OOXML VBA project: xl/vbaProject.bin 11264 bytes

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