Emotet — Office (OLE) / .XLS malware analysis

Static analysis result for SHA-256 e71eb3a306a8b1ce…

MALICIOUS

Office (OLE) / .XLS

123.5 KB Created: 2015-06-05 18:17:20 Authoring application: Microsoft Excel
MD5: eee6febc8fe62d05b83ab07ab454ab3f SHA-1: 0de672663c4f18e7d53d0b49fc842bc6684519f3 SHA-256: e71eb3a306a8b1cef0c1cd7da89e141da0f48825ae10e54579fd188f0543d830
280 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.001 PowerShell T1059.005 Visual Basic T1204.002 Malicious File T1105 Ingress Tool Transfer

The file is a macro-enabled Excel spreadsheet containing a Workbook_Open macro that executes Windows Script Host commands. The script attempts to download and execute payloads from multiple URLs, including 'http://harperhousseproducts.com/Merchandise2/ARSf1LIcOauhH1rDrIHi/' and 'http://holubivideo.com/eln-images/zqxzg0YXpIwbF/', and saves them as 'c:\programdata\yhjlswle.vbs' and 'c:\programdata\ughldskbhn.bat'. The ClamAV detection 'Doc.Downloader.EmotetRed02220-9938909-0' strongly suggests the Emotet family.

Heuristics 7

  • ClamAV: Doc.Downloader.EmotetRed02220-9938909-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.EmotetRed02220-9938909-0
  • 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
de7bcbc45ff0a77d05d9af662bacc316e71be11a980e94f6673e556a5dd9d1bc		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 12808 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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