Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 5f853fd94b170d9a…

MALICIOUS

Office (OOXML)

41.5 KB Created: 2021-06-22 12:43:05 UTC Authoring application: Microsoft Excel 16.0300
MD5: c4c1c537349da071e7d6900f6b901c92 SHA-1: 0254fd3a5b386df0f01194d3622baf3d0c042414 SHA-256: 5f853fd94b170d9a55fa7bec736e3e97974b665f7a0f7210ee6f1d08b28746d9
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 file is an OOXML document containing VBA macros. Heuristics indicate the VBA code references PowerShell and cmd.exe, and uses GetObject, suggesting it's designed to execute arbitrary commands. The VBA macro itself appears to be heavily obfuscated, but its presence and the associated heuristics strongly suggest a downloader or initial execution stage for a malicious 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
03a9dfeceb6a0345115b547af93150d7083a37af7c0f038b8ae4ef3581d6e32d		 vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 34430 bytes
vbaProject_00.bin
f49969b69475101d790768b5ffe5b930139363f7331764325ffcdf7eba78aaca		 vba-project OOXML VBA project: xl/vbaProject.bin 11264 bytes

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