Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 75122c89fcc1ce3a…

MALICIOUS

Office (OOXML)

41.5 KB Created: 2021-06-22 12:43:05 UTC Authoring application: Microsoft Excel 16.0300
MD5: 4a936506cc61b538bcc6d8bf3fdcadb5 SHA-1: 0101fc6b752ba2c6dca903685b1160b8a3795d18 SHA-256: 75122c89fcc1ce3ae997399fdd745e7cf401eac6c29db52f096e5ef65dbf0801
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 VBA code references PowerShell and cmd.exe, and uses GetObject. The VBA code itself appears to be heavily obfuscated, but the presence of these indicators suggests it is designed to download and execute a second-stage payload. The specific family is not identifiable from the provided evidence.

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
9a806f87985dcabf5dbdc8263fc0d0c147366f44ba94b6d6041fd1d4270ab6a8		 vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 34430 bytes
vbaProject_00.bin
1e552db39ce0a5f376bbfd9f9c5ece66a9405a986ba9f36da058f974d18d1cb5		 vba-project OOXML VBA project: xl/vbaProject.bin 11264 bytes

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