Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 ed52e8a02e7ecb26…

MALICIOUS

Office (OOXML)

41.6 KB Created: 2021-06-22 12:43:05 UTC Authoring application: Microsoft Excel 16.0300
MD5: de045c5c2f7cc2fb5b409fbed2e08b27 SHA-1: 2d9408c66667d400ff3c9c6b51ed66cc0ea0dfd5 SHA-256: ed52e8a02e7ecb26e47d1263e2a1b65b0c20ddcc842ff7e6b9230248072a0618
160 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The Excel document contains VBA macros that reference cmd.exe and PowerShell. The critical heuristic 'OLE_VBA_PS' indicates a PowerShell reference within the VBA, suggesting the macro is designed to execute a PowerShell command. This is commonly used to download and execute further malicious content. The GetObject call heuristic also suggests potential for object manipulation or execution.

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
9de8b55843fae5037d572151556575fe58a3024fe570ad38fae0ffff8ef16cb5		 vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 35036 bytes
vbaProject_00.bin
acd0bd8aac125ad1b67a44ea5aedd35fc6fcbcbe06d5a83bf4ec6e21010997fd		 vba-project OOXML VBA project: xl/vbaProject.bin 11264 bytes

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