Office (OOXML) malware analysis — malicious · dd0f3b0d281f2bd2

MALICIOUS

Office (OOXML)

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

MD5: a1d90eb79127dc1ffbe491327271aa05 SHA-1: 5106291231859b0f0f8f7e72d05bfbd2e54513fb SHA-256: dd0f3b0d281f2bd2fa288449893bb37dc1add2818b0f94943b3eece619cb4a90

160 Risk Score

Malware Insights

MITRE ATT&CK

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

The OOXML file contains VBA macros that reference cmd.exe and PowerShell. The GetObject call and the presence of a VBA project indicate macro execution is intended. The script's Decode64 function suggests it may be deobfuscating or decoding a payload, likely to download and execute 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` `c10b47743a96d5030d6cc3c65eafed01ac650aa2d4a1d3b8d3a10085f61dcc86`	vba-macro	oletools.olevba.extract_macros (decoded VBA source from OOXML)	35036 bytes
`vbaProject_00.bin` `8cc7909a49a7255e4f3523115c98d1aa9856b309b12bacf1a21e416c3f7cf79e`	vba-project	OOXML VBA project: xl/vbaProject.bin	11264 bytes

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