Emotet — Office (OLE) / .XLS malware analysis

Static analysis result for SHA-256 ee0ab64edd19a9a2…

MALICIOUS

Office (OLE) / .XLS

151.5 KB Created: 2015-06-05 18:17:20 Authoring application: Microsoft Excel
MD5: fdb89f5140a7231d429458a80933b9b4 SHA-1: 9e041015ffc6a470899c5d36591611a1b0459786 SHA-256: ee0ab64edd19a9a2911e7c3cd6e07448b395f0e403f9104dcd854ead18098da8
280 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.001 PowerShell T1059.005 Visual Basic T1204.002 Malicious File

The file contains a Workbook_Open VBA macro that is configured to execute a shell command. This command appears to download and execute a second-stage payload from a list of URLs. The ClamAV detection name 'Doc.Downloader.EmotetExcel02226-9938630-0' and the presence of a Workbook_Open auto-execution macro strongly suggest the Emotet family. The macro reconstructs a list of URLs for downloading the payload, including 'http://moneypuoto.ja.deals/assets/jcWxvvuS7VhWxj/http://vestaseguridab.com.ar/wp/wp-content/7JD9gufnwG/,http://mail.rededucacionvirtual.com/wp-incluedes/BqJi1K/,http://veluxcounterapi.orbitalwave.it/assets/W9KfK84'. It also attempts to execute a batch file at 'c:\programdata\jledshf.bat'.

Heuristics 7

  • ClamAV: Doc.Downloader.EmotetExcel02226-9938630-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.EmotetExcel02226-9938630-0
  • Reference to Windows Script Host high SC_STR_WSCRIPT
    Reference to Windows Script Host
  • Workbook_Open macro high OLE_VBA_WBOPEN
    Workbook_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • 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.
  • 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.

FilenameKindSourceSize
macros.bas
c49f2df77c50e10269216d97c3efdf7c32f9f18ba5d8fd42a9b144f48e100040		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 5709 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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