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

Static analysis result for SHA-256 6c7f6bb75732139f…

MALICIOUS

Office (OLE) / .XLS

248.0 KB Created: 2020-09-17 00:39:30
MD5: a92aceb7fdf1a577d8b8c9051b1865e5 SHA-1: 50bcc5fdc8172907854784e7b3e8f49ff8104850 SHA-256: 6c7f6bb75732139fe757e1a41cc4f7eb816761a55e5d5755d2a77e47e2fb2718
182 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File T1105 Ingress Tool Transfer

The Workbook_Open macro contains a call to URLDownloadToFileA to download a file from http://rosagar.com/pdf/lekpa.exe to C:\Users\Public\Documents\sidbihwtnmiyedr.exe. Subsequently, the Shell() function is used to execute the downloaded file, indicating a downloader or dropper functionality.

Heuristics 5

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • URLDownloadToFile in VBA critical OLE_VBA_DOWNLOAD
    URLDownloadToFile in VBA
  • Workbook_Open macro high OLE_VBA_WBOPEN
    Workbook_Open macro
  • 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://rosagar.com/pdf/lekpa.exe

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
bc874189b2a8403912ba7939316850d516c50e15cf2a009e75c8f184f76eb3b9		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1752 bytes

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