Office (OOXML) malware analysis — malicious · 0f754a268c1769eb

MALICIOUS

Office (OOXML)

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

MD5: 69f0318591269a3eb4049ee6b7321540 SHA-1: f1e02773ef90fe9a6beb2752acab8fcdb7b50403 SHA-256: 0f754a268c1769eb4ed2c2494f22755a1e6529878057deb4655c2f482e6e86e2

160 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The sample is an Office document containing VBA macros. Heuristics indicate the VBA code references cmd.exe and PowerShell, suggesting an attempt to execute arbitrary commands. The GetObject call further supports the possibility of object manipulation for malicious purposes. The VBA code itself appears to be obfuscated, but the presence of these indicators strongly suggests a downloader or dropper functionality.

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` `659462b6b3adf2e15285c5afac1913623af16c078196d82bd22760dce8d3379f`	vba-macro	oletools.olevba.extract_macros (decoded VBA source from OOXML)	35036 bytes
`vbaProject_00.bin` `568f5ce2d217238354e3d712c36b3346e07f609ff03ff7b26facbe02410bf082`	vba-project	OOXML VBA project: xl/vbaProject.bin	11264 bytes

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