Office (OOXML) malware analysis — malicious · 7c8acb9db62a9786

MALICIOUS

Office (OOXML)

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

MD5: 0b65e5f802da864663f11a81d89c787d SHA-1: 81165fa3ee44fc50e9076640b23116f992b5979d SHA-256: 7c8acb9db62a97861414779ae3c2a0e599834300cee3604ed7828227b179eb0a

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 macros reference PowerShell and cmd.exe, and also use GetObject, suggesting an attempt to execute external code. The VBA code itself appears to be heavily obfuscated, but the presence of these indicators strongly suggests the macro is designed to download and execute a second-stage payload. The lack of specific IOCs like URLs or hashes prevents a more precise attribution.

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` `234efe35f9ab77f7855c1ce9edbb7f6a0ee18235fed93e936da5df30c17cbc8b`	vba-macro	oletools.olevba.extract_macros (decoded VBA source from OOXML)	34430 bytes
`vbaProject_00.bin` `213836399e7d2201dc724d743ba472cb489e5f0bca2cd842f2840bfa2ce7b52d`	vba-project	OOXML VBA project: xl/vbaProject.bin	11264 bytes

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