Malicious Office (OLE) / .XLS — malware analysis report

Static analysis result for SHA-256 f41e1405b2d7c19b…

MALICIOUS

Office (OLE) / .XLS

305.5 KB Created: 2020-10-14 09:36:37
MD5: 520c6c2d15d6439bf5bcf95b708accd7 SHA-1: 97da807f1b529e9bb78835713e8aeabe813cd98d SHA-256: f41e1405b2d7c19b814170232d477a3bacfedada428b26a6aa4f2ef1830f5bef
220 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The sample contains a Workbook_Open VBA macro that executes a PowerShell command. This command downloads a file from 'http://weeshoppi.com/wp-includes/ID3/z/810221.jpg' and saves it as 'C:\Users\Public\kznhxji.exe', then executes the downloaded file. This indicates a downloader or droppper functionality.

Heuristics 7

  • Reference to PowerShell high SC_STR_POWERSHELL
    Reference to PowerShell
  • Workbook_Open macro high OLE_VBA_WBOPEN
    Workbook_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://weeshoppi.com/wp-includes/ID3/z/810221.jpg

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
161f8f42f5c95c92395184a95292df1f7d5019c3d289129d355f4956993c9045
vba-macro oletools.olevba.extract_macros (decoded VBA source) 1776 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.