Office (OOXML) malware analysis — malicious · 45ac82812dd3393a

MALICIOUS

Office (OOXML)

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

MD5: fa0bb93088a88f2060ece576b579ab36 SHA-1: 2fee53c8ff1cbcf73c84fd80c4194a400bfad371 SHA-256: 45ac82812dd3393aa86582e2e63261f24137e6afa83476f8a0924e6709fa9e66

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 VBA code itself appears to be heavily obfuscated, but the presence of these references strongly suggests an intent to execute arbitrary commands. The GetObject call further indicates potential for object manipulation or execution of external code. This combination points to a macro-based downloader or dropper.

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` `cd01260b751d9cf432c29ff0fadc1435cc8adecad3cbaadcc315b14f376be005`	vba-macro	oletools.olevba.extract_macros (decoded VBA source from OOXML)	35036 bytes
`vbaProject_00.bin` `00ca8f026f3a1f57edbd1baed874ceb0e549b2ec534c6d0b8daf3d26c557fcbf`	vba-project	OOXML VBA project: xl/vbaProject.bin	11264 bytes

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