Office (OOXML) malware analysis — malicious · b241cab2ee76ae3f

MALICIOUS

Office (OOXML)

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

MD5: 4908019a928208b6a3966089daf17be5 SHA-1: 01b93b5c0a5bea2f0055c4c36de527020865ade1 SHA-256: b241cab2ee76ae3f7f237dec59cbdfe045a40ac488b79435ffa825f9957648d7

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 contains VBA macros that reference cmd.exe and PowerShell, indicating an attempt to execute commands. The presence of a Base64 decoding function suggests obfuscated code is being used to hide the actual payload. This pattern is commonly used by macro-based malware to download and execute further stages.

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` `798b2c4c7fdb531b6a94e07f7c86cb79942ef7a9e1beb085f1db7ab9d37c285d`	vba-macro	oletools.olevba.extract_macros (decoded VBA source from OOXML)	35036 bytes
`vbaProject_00.bin` `a54a2242bfb9b5c1217966c0157d8ba2c4e711ac1c9c22768fad78197c738e3a`	vba-project	OOXML VBA project: xl/vbaProject.bin	11264 bytes

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