Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 d92045bbcf3f7573…

MALICIOUS

Office (OOXML)

41.6 KB Created: 2021-06-22 12:43:05 UTC Authoring application: Microsoft Excel 16.0300
MD5: c94ecf1cff9d336a5a2ac1dad8508d96 SHA-1: 8b4a6fffde70d1e4bb85f84d0fff2f3185549324 SHA-256: d92045bbcf3f7573f1e1eb9f028de6967789aa9e1c5ed1fd2624f4ea890f48d4
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. Critical heuristics indicate the VBA code references PowerShell and cmd.exe, and high heuristics show GetObject calls. The VBA macro appears to be obfuscated, but its likely intent is to download and execute a second-stage payload via PowerShell. The presence of these indicators strongly suggests a malicious macro-based downloader.

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
79f6111dd230192068da3abf8490ca8512698f37cae728d0c3cfbde162d561f8		 vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 35036 bytes
vbaProject_00.bin
db133cda4eb32dfd4cfb3e9bb76c3bf36dd552bb7cf1256f14cab26373df81a3		 vba-project OOXML VBA project: xl/vbaProject.bin 11264 bytes

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