Office (OOXML) malware analysis — malicious · cd0edfed51a6e108

MALICIOUS

Office (OOXML)

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

MD5: e308d1f204cd2a44ff450dc485fcd2bd SHA-1: 4825d0b5537e5f464d8a1684d6adf2fe266b8e86 SHA-256: cd0edfed51a6e108b9f530960fdaeef77c003f21d9680fd3e6f71ed10f9022d0

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 OOXML document containing VBA macros. Heuristics indicate the VBA code references PowerShell and cmd.exe, and uses GetObject. The VBA code itself appears to be heavily obfuscated, but its structure suggests it's designed to execute further commands. This is consistent with a macro-based downloader attempting to fetch and run a second-stage payload.

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` `65701f26bbc7b62bf889903aec09e45cd5bfd673a6661f3eda0f814f8fd6a8b5`	vba-macro	oletools.olevba.extract_macros (decoded VBA source from OOXML)	34430 bytes
`vbaProject_00.bin` `6463a9afd20937208aac17ba2121ce2816390be2f8b915e460d00a18df17cf39`	vba-project	OOXML VBA project: xl/vbaProject.bin	11264 bytes

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