Office (OOXML) malware analysis — malicious · 709d9c7059892a6c

MALICIOUS

Office (OOXML)

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

MD5: 1fb0e9054a228ba02f05e368a41e7f73 SHA-1: 0f79c2ae3a82794e5ada1cf8d0193e4a09c636cc SHA-256: 709d9c7059892a6c60c0eac2021170850542e4df42377aeecb52bd2f8e332b4c

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 macros reference cmd.exe and PowerShell, suggesting an attempt to execute commands or download additional payloads. The presence of a Base64 decoding function within the VBA code further supports the hypothesis that it is designed to obfuscate and execute malicious code.

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` `5acc58521e74fe0067025b81730637c74f71df706715a7c8cf77cfaa5bf7a207`	vba-macro	oletools.olevba.extract_macros (decoded VBA source from OOXML)	35036 bytes
`vbaProject_00.bin` `173c576eb4a3e5bdfd47dbb83e6cf668672cd2ed73fb3d7b48c27461947f6716`	vba-project	OOXML VBA project: xl/vbaProject.bin	11264 bytes

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