Office (OLE) / .XLS malware analysis — malicious · 78d04244289fe215

MALICIOUS

Office (OLE) / .XLS

32.5 KB Created: 2015-06-05 18:17:20 Authoring application: Microsoft Excel First seen: 2022-09-13

MD5: 5116f60729db73f6140f715f13046970 SHA-1: 3682d9bb93f77602331e0faa13534d89dce7549b SHA-256: 78d04244289fe215008b2c7d8937813b740228e5b60092287346e66e29c8182d

100 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1059.005 Visual Basic

The embedded VBA macro contains obfuscated PowerShell code that attempts to download a file named 'file.exe' to the temporary directory and execute it. The PowerShell command reconstructs the URL 'http://netcsy.qg.sinimda/qg.netcsy/exe.elif/exe.FSYgSoaTwGTdaqx/download.ntecjbo-wen()' and uses it to download the payload. The use of CreateObject and PowerShell execution points to a downloader or dropper functionality.

Heuristics 3

Reference to PowerShell high SC_STR_POWERSHELL

Reference to PowerShell
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` `ca618bfe8980e4c72c9c562089dc995a79b192cfb83b648643e16a6f33c3e4cc`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	1380 bytes

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