Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 896ae76be05652b2…

MALICIOUS

Office (OOXML)

41.6 KB Created: 2021-06-22 12:43:05 UTC Authoring application: Microsoft Excel 16.0300
MD5: 9008a2b17efd7468c5576d98a1399b1e SHA-1: a0ee34b1b77d14cfd8aee42a471cd3f522ea6a32 SHA-256: 896ae76be05652b2011c21e34d33133b2a2969f8ec99251570292962327ca109
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 Office document containing VBA macros. Heuristics indicate the macros reference cmd.exe and PowerShell, suggesting an attempt to execute arbitrary commands. The GetObject call further supports the likelihood of executing external code. The primary function of the VBA code appears to be decoding and executing a payload, likely downloaded from a remote source.

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
1c7cdbc4ee0714e02166125a1a55bc359a09e06f432830446353069303d8fdde		 vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 35036 bytes
vbaProject_00.bin
17f8491eb76ab6e36c51a4a0f7d2508b5676f1edc147732869b9364c10b21db5		 vba-project OOXML VBA project: xl/vbaProject.bin 11264 bytes

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