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

Static analysis result for SHA-256 86d5516b71ddd68c…

MALICIOUS

Office (OLE) / .XLS

163.0 KB Created: 2020-05-26 11:43:59 Authoring application: Microsoft Excel
MD5: 1a4764ed08b29547bb4639bf116b9221 SHA-1: 72e9b8f7a0ff741ab9f7d49647193ef5d3282cf3 SHA-256: 86d5516b71ddd68cf50273d5fa8a501c399be218b35dcfc09c29ef97f3afc111
350 Risk Score

Malware Insights

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

The Excel file contains VBA macros, including a Workbook_Open event, which is designed to execute automatically. The macro references the URLDownloadToFileA and ShellExecuteA APIs, indicating an intent to download and execute a second-stage payload. The document body contains a lure to 'Enable content to display this transaction receipt'.

Heuristics 10

  • Reference to URLDownloadToFile API critical SC_STR_URLDOWNLOAD
    Reference to URLDownloadToFile API
  • URLDownloadToFile in VBA critical OLE_VBA_DOWNLOAD
    URLDownloadToFile in VBA
  • ClamAV: Xls.Dropper.Agent-7914576-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Xls.Dropper.Agent-7914576-0
  • Reference to ShellExecute API high SC_STR_SHELLEXEC
    Reference to ShellExecute API
  • Workbook_Open macro high OLE_VBA_WBOPEN
    Workbook_Open macro
  • VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC
    Compiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • Environ() call (env variable access) low OLE_VBA_ENVIRON
    Environ() call (env variable access)
  • 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://ns.adobe.com/xap/1.0/
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
8ef948772ed3cfb9b6eb526249e9e29c192f714d0d4e2e7b17c842e530d7bb89		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 13377 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.