Office (OLE) / .XLS malware analysis — malicious · 93129fbf583ce2e6

MALICIOUS

Office (OLE) / .XLS

305.5 KB Created: 2020-10-05 11:56:18

MD5: 5b51fd5c0bf460270094853a7bcdb803 SHA-1: 71ff6cff03c018baf816bd4d696ce348a5e35277 SHA-256: 93129fbf583ce2e637e0a21c490a549e1597902179636ebc13a7c937b5707782

140 Risk Score

Malware Insights

MITRE ATT&CK

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

The Workbook_Open macro fires automatically when the XLS file is opened. It contains a PowerShell command that uses Invoke-WebRequest (iwr) to download a file from http://192.236.178.80/7z/bin-cyber.jpg and save it as C:\Users\Public\fxuckjqqee.exe. It then executes the downloaded file. This indicates a downloader or droppper functionality.

Heuristics 4

Workbook_Open macro high OLE_VBA_WBOPEN

Workbook_Open macro
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
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` `48938d2b0cc68f52d152af20dbd19aeb5cb547de844f8dda18ae36ba84ec3142`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	1259 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.

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