Office (OOXML) malware analysis — malicious · 46a1e8b22834f189

MALICIOUS

Office (OOXML)

41.6 KB Created: 2021-06-22 12:43:05 UTC Authoring application: Microsoft Excel 16.0300

MD5: a9a624deb7b5118bf7a916a49ae64e5d SHA-1: 31ade667f9e0c9676de6164174ea53145e34260f SHA-256: 46a1e8b22834f18909052dc7e6fab64acff2601e1da9822a25da5bcbe9a674a9

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 OOXML document contains VBA macros that reference PowerShell and cmd.exe. The presence of a GetObject call further suggests dynamic execution. These elements indicate the macro is designed to download and execute a secondary payload, a common technique for initial access via malicious documents.

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.

Filename	Kind	Source	Size
`macros.bas` `26accc210b734095d3a89dd1aa1d70fc08da1a4e59db5a9d939988b02499607a`	vba-macro	oletools.olevba.extract_macros (decoded VBA source from OOXML)	35036 bytes
`vbaProject_00.bin` `1aeb50b60fe5cf050330634caf6915a69f30d8189eab231a15958a63da06c03a`	vba-project	OOXML VBA project: xl/vbaProject.bin	11264 bytes

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