Office (OOXML) malware analysis — malicious · d304180ccf4693d6

MALICIOUS

Office (OOXML)

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

MD5: fce779d5781115ee0da6438348bb6722 SHA-1: 24468f9a9c722208e6ab78d79d379935ca2c86c9 SHA-256: d304180ccf4693d6042c8601252cc747a81e7b174956eda589cbc639bb641e9c

160 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1059.003 Windows Command Shell T1566.001 Spearphishing Attachment

The file is an Office document containing VBA macros. Heuristics indicate the presence of PowerShell and cmd.exe references within the VBA code, suggesting an attempt to execute external commands. The VBA code itself appears to be heavily obfuscated, but the presence of these references strongly implies a downloader or dropper functionality. The document was likely delivered as a spearphishing attachment.

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` `8a3e4eb4929f25f73480f7f692fd7d6fb6fb6a670712e10e049907e20def2ddf`	vba-macro	oletools.olevba.extract_macros (decoded VBA source from OOXML)	34430 bytes
`vbaProject_00.bin` `dbd8c62c07fd8bf2d4f3ee6883a84072d5241b0fa218c7bb42174d3a8521f81f`	vba-project	OOXML VBA project: xl/vbaProject.bin	11264 bytes

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