Office (OLE) / .XLS malware analysis — malicious · 52ec06afb5c0aa5e

MALICIOUS

Office (OLE) / .XLS

40.5 KB Created: 2015-06-05 18:17:20 Authoring application: Microsoft Excel First seen: 2022-05-12

MD5: f1035d3fc2edee1b068a0f95193b1dee SHA-1: 50e45c6aadc6add4ab3e15b802ca6ebe5a0d6784 SHA-256: 52ec06afb5c0aa5e28828f49ad02748990513b8370c33685a1de2a03ec840207

100 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1059.005 Visual Basic

The sample is an Excel spreadsheet containing VBA macros. The macros utilize `CreateObject` to instantiate `Wscript.Shell` and execute a PowerShell command. This command reconstructs a URL from concatenated strings: 'http://red.maybi.biz/2/protect/20-Client.vbs'. It then downloads and saves this script to '%TEMP%\notepad.vbs' and executes it. The script also attempts to establish persistence by writing to the registry key 'HKCU\Software\Microsoft\Windows\CurrentVersion\Run\IAccessible2Proxy'.

Heuristics 3

Reference to Windows Script Host high SC_STR_WSCRIPT

Reference to Windows Script Host
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
VBA macros detected medium OLE_VBA_MACROS

Document contains VBA macro code

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `5c57a89b4957c4bbc786e6d6246429e3999bc58d80ea3e7e5abda4032ebd2550`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	1765 bytes

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