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

Static analysis result for SHA-256 80d127d15f6b3447…

MALICIOUS

Office (OLE) / .XLSX

161.5 KB Created: 2021-08-19 14:03:52 Authoring application: Microsoft Excel First seen: 2022-12-11
MD5: e7dbc89b87aa7f2938df6c9a61acea11 SHA-1: 5f826ec70db696c080173379ce03d04e8b479aed SHA-256: 80d127d15f6b34479659f2a5aad6a054619e6464e02ccabc507957155b6eb367
222 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File T1105 Ingress Tool Transfer

The Workbook_Open macro executes a command using cmd.exe to download a file from http://35.158.94.112/fif/IeJPsQau8rizUhh.exe using certutil and then executes the downloaded file. This indicates a downloader or droppper functionality.

Heuristics 6

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • LOLBin reference in VBA critical OLE_VBA_LOLBIN
    LOLBin reference in VBA
  • Workbook_Open macro high OLE_VBA_WBOPEN
    Workbook_Open macro
  • cmd.exe reference in VBA high OLE_VBA_CMD
    cmd.exe reference in VBA
  • 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://35.158.94.112/fif/IeJPsQau8rizUhh.exe

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
fe666ed76ab827fe20c68a990d2d2e39aa3ad0fc99dad19b917c9228b05750d8		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1119 bytes

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