Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 9a0469921bd37874…

MALICIOUS

Office (OOXML)

41.5 KB Created: 2021-06-22 12:43:05 UTC Authoring application: Microsoft Excel 16.0300
MD5: 2d4d263371854116f8fc0f3da277a5dc SHA-1: a8816bdf21f56757747ad9b763229d6af7c47446 SHA-256: 9a0469921bd378748eb2397c7151613416c4b4b43f1cde6b6ce7f506d0f7ddbe
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 cmd.exe and PowerShell, suggesting it's designed to execute commands on the host system. The GetObject call further supports the possibility of object manipulation for execution. The primary function of the VBA appears to be decoding and executing a payload, likely a 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
cf45960c43a6926c371f048ed2d9de67ca4310ea536a249bdd68c2a22a89f232		 vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 34430 bytes
vbaProject_00.bin
75d819279bd7693782cc9d4d4685ff45f86ee51b1a2ca56e6f0b71ddf96c423c		 vba-project OOXML VBA project: xl/vbaProject.bin 11264 bytes

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